DSTU B A.3.2-12:2009 SSBP. Ventilation systems. Zagalni vimogi DSTU GOST 166:2009 (ISO 3599-76) Calipers. Technical specifications ( GOST 166-89 (ISO 3599-76), IDT) DSTU EN 473:2012 Non-invasive control. Qualification and certification of personnel. General provisions ( EN 473 :2008, IDT) DSTU 2680-94 Seamless rolled pipes made of steel and alloys. Terminology and identification of surface defects DSTU 2841-94 ( GOST 27809-95 ) Chavun i steel. Methods of spectrographic analysis DSTU 3124-95 Pipes made of steel and alloy. Bind and preparation of samples for the chemical warehouse. Basic provisions DSTU 4179-2003 Metal vibrating tapes. Technical skills ( GOST 7502-98 , MOD) DSTU GOST 6507:2009 Micrometers. Specifications DSTU 7238:2011 Safety standards system. Create a collective zakhist for the working people. Zagalni vimogi ta classification DSTU 7239:2011 Safety standards system. Assign an individual zakhist. Zagalni vimogi ta classification DSTU ISO 7438:2005 Metal materials. Testing for zgin (ISO 7438:1985, IDT) DSTU ISO 8496-2002 Metal materials. Trumpet. Testing for pulling out the rings with two parallel rods (ISO 8496:1988, IDT) DSTU GOST 12344:2005 Alloyed and high-alloyed steel. Methods for designing vugletsiu ( GOST 12344-2003 ,…

Inspection of the outer surface of pipes is carried out visually without the use of magnifying means. The internal surface of pipes with an internal diameter of 70 mm or more is inspected using a periscope or videoscopic systems. It is allowed to inspect the inner surface of pipes without the use of instruments, using lighting devices at both ends of the pipe against the light. For pipes with an internal diameter of less than 70 mm, as well as pipes with an internal diameter of 70 mm or more that have not been inspected by a periscope, the manufacturer guarantees that the internal surface of the pipes meets the requirements of these specifications based on satisfactory results of 100% ultrasonic inspection. The classification of defects is carried out in accordance with DSTU 2680 (OST 14-82 [ 18 ]). The depth of defects is checked after filing and subsequent measurement. The wall…

What is MW and What is AW? MW is minimum wall thickness. Wall Thickness Tolerance in (-0, +20%) for OD 1-1/2″ [38.1mm] and under, in (-0, +22%) for OD over 1-1/2″ [38.1mm]. AW is Average Wall Thickness. Wall Thickness Tolerance in (-10%, +10%) for OD 1-1/2″ [38.1mm] and under, in (-11%, +11%) for OD over 1-1/2″ [38.1mm]. According to ASME SA213 Permissible Variations from the Specified Wall Thickness: 13.1 Permissible variations from the specified minimum wall thickness shall be in accordance with Specification A1016/A1016M.13.2 Permissible variations from the specified average wall thickness shall be +/-10 % of the specified average wall thickness for cold formed tubes and, unless otherwise specified by the purchaser.

TP321 TP321H stainless steel is basically from 304 stainless steel. They different by a very very small addition of Titanium. The real difference is their carbon content. The higher the carbon content the greater the yield strength. 321 stainless steel has advantages in a high temperature environment due to its excellent mechanical properties. Compared with 304 alloy, 321 stainless steel has better ductility and resistance to stress fracture. In addition, 304L can also be used for anti-sensitization and intergranular corrosion. Grade TP304L is more readily available in most product forms, and so is generally used in preference to 321 if the requirement is simply for resistance to intergranular corrosion after welding. However 304L Stainless Steel Tubes has lower hot strength than 321 stainless steel tube and so is not the best choice if the requirement is resistance to an operating environment over about 500°C. However, 321 is a much better…

What are the main factors that affect the price of stainless steel tubes? We analyze from the production process, inspection requirements, raw materials and other factors. 1. Production process. Due to the higher production cost of bright annealing, the price of bright annealed tubes will be higher than that of pickling annealed tubes. Because the heat treatment speed of the bright annealing furnace is slow, the number of stainless steel tubes passing through each time is smaller, and additional electricity and ammonia will be consumed. Since there are more production passes for small-diameter steel tubes, the price of small-diameter stainless steel tubes will be higher than that of large-diameter stainless steel pipes. In addition, polishing stainless steel tubing and U bend tube will also incur additional costs. 2. Inspection requirements According to ASME SA213 requirements, Each tube shall be subjected to the nondestructive electric test or the hydrostatic test. The…

904L stainless steel main components: 20Cr-24Ni-4.3Mo-1.5Cu Grade – C Mn Si P S Cr Mo Ni Cu N ASTM A213N08904 904L min. max. – 0.020 – 2.00 – 1.00 – 0.040 – 0.030 19.0 23.0 4.0 5.0 23.028.0 1.02.0 –0.10 EN 10216-5 1.4539 min. max. – 0.020 – 2.00 – 0.70 – 0.030 – 0.010 19.0 21.0 4.0 5.0 24.026.0 1.22.0 –0.15 904L N08904 stainless steel is a low-carbon, high-alloyed austenitic stainless steel designed for environments with harsh corrosion conditions. It has better corrosion resistance than 316L and 317L, and at the same time, it takes into account both price and performance, and is extremely cost-effective . Because of the addition of 1.5% copper, it has very good corrosion resistance for reducing acids such as sulfuric acid and phosphoric acid. 904L super austenitic stainless steel also has excellent corrosion resistance to stress corrosion, pitting corrosion and crevice corrosion caused by chloride…

According to Harmonized Tariff Schedule of the United States, (HTSUS)， Chapter 73. HS Code Description Tariff 7304 4130 Cold Drawn Stainless Steel Tubes and Pipe, Hollow Profiles, SeamlessOD less than 19mm. 36% 7304 4160 OD larger than 19mm 36% 7304 4900 Stainless Steel Hollow Bar 36%

In the field of stainless steel, usually 304 is called TP304, 304L is called 304L, 316L is called TP316L. For example: ASTM A312 TP304, ASME SA213 TP304L, ASME SA213 TP316L. So what does “TP” mean? TP stands for Type. The reason is AISI(American Iron and Steel Institute) Classifies Stainless Steel in Type. For the same reason, sometimes 304, 304, L316L, will be called AISI 304, AISI 304L, AISI 316L.

OD: 17.15 – 508mm (3/8 INCH to 20 INCH)WT: 0.5 – 60 mm, Schedule 10s, 20, 40s, 40, 60, 80s, 80, 100, 120, 140, 160, XXH.Production Capacity: 500 MT/Month Guanyu Tube is specialized manufacturer of ASTM A312 TP304, ASTM A312 TP304L, ASTM A312 TP316, ASTM A312 TP316L, ASTM A312 TP321, ASTM A312 TP310S, ASTM A312 TP304 TP304L TP304H TP316 TP316L TP317L TP321 TP316Ti TP347 TP347H TP310S TP309S Stainless Steel Pipe Supplier. This is issued under the fixed designation ASTM A312; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A superscript epsilon indicates an editorial change since the last revision or reapproval. This covers seamless, straight-seam and heavily cold worked welded austenitic stainless steel pipe for high-temperature and general corrosive service. When the impact test criterion for a low-temperature service would be…

According to ASME B36.10 and ASME B 36.19. The weight result base on Calculate of “Weight= 0.02507×T (D – T )”. ASTM A312 TP316L Schdule | ASTM A312 TP316L Weight | ASTM A312 TP316 Size NPS DN ODinch ODmm SCH5Smm SCH10Smm SCH10mm SCH20mm SCH30mm STDmm SCH40Smm SCH40mm SCH60mm XSmm SCH80Smm SCH80mm SCH100mm SCH120mm SCH140mm SCH160mm XXSmm   1/8 6 0.405 10.3 　 1.24 1.24 　 1.45 1.73 1.73 1.73 　 2.41 2.41 2.41 　 　 　 　 　 kgs/m 　 　 　 　 0.282 0.282   0.322 0.372 0.372 0.372   0.477 0.477 0.477 　 　 　 　 　   1/4 8 0.540 13.7 　 1.65 1.65 　 1.85 2.24 2.24 2.24 　 3.02 3.02 3.02 　 　 　 　 　 kgs/m 　 　 　 　 0.498 0.498   0.550 0.644 0.644 0.644   0.809 0.809 0.809 　 　 　 　 　   3/8 10 0.675 17.1 　 1.65 1.65…

According to ASME B36.10 and ASME B 36.19. The weight result base on Calculate of “Weight= 0.02491 ×T (D – T )”. ASTM A312 TP304 Schdule | ASTM A312 TP304 Weight | ASTM A312 TP304 Size. ASTM A312 TP304 TP304L TP304H TP321 TP321H Stainless Steel Pipe Size and Weight NPS DN ODinch ODmm SCH5Smm SCH10Smm SCH10mm SCH20mm SCH30mm STDmm SCH40Smm SCH40mm SCH60mm XSmm SCH80Smm SCH80mm SCH100mm SCH120mm SCH140mm SCH160mm XXSmm   1/8 6 0.405 10.3 　 1.24 1.24 　 1.45 1.73 1.73 1.73 　 2.41 2.41 2.41 　 　 　 　 　 kgs/m 　 　 　 　 0.280 0.280   0.320 0.369 0.369 0.369   0.474 0.474 0.474 　 　 　 　 　   1/4 8 0.540 13.7 　 1.65 1.65 　 1.85 2.24 2.24 2.24 　 3.02 3.02 3.02 　 　 　 　 　 kgs/m 　 　 　 　 0.495 0.495   0.546 0.639 0.639 0.639   0.803 0.803…

ASTM A213 Tubing Working Pressure Rating OD inches Ave. Wall inches Min Yield Strength (PSI) Min Tensile Strength (PSI) Theoretical Burst Pressure * (PSI) Working Pressure (PSI) 25% of Burst Theoretical Yield Point ** (PSI) Collapse Pressure *** (PSI) 0.250 0.020 30,000 75,000 14,286 3,571 5,714 4,416 0.250 0.028 30,000 75,000 21,649 5,412 8,660 5,967 0.250 0.035 30,000 75,000 29,167 7,292 11,667 7,224 0.250 0.049 30,000 75,000 48,355 12,089 19,342 9,455 0.250 0.065 30,000 75,000 81,250 20,313 32,500 11,544 0.375 0.020 30,000 75,000 8,955 2,239 3,582 3,029 0.375 0.028 30,000 75,000 13,166 3,292 5,266 4,145 0.375 0.035 30,000 75,000 17,213 4,303 6,885 5,077 0.375 0.049 30,000 75,000 26,534 6,634 10,614 6,816 0.375 0.065 30,000 75,000 39,796 9,949 15,918 8,597 0.500 0.020 30,000 75,000 6,522 1,630 2,609 2,201 0.500 0.028 30,000 75,000 9,459 2,365 3,784 3,172 0.500 0.035 30,000 75,000 12,209 3,052 4,884 3,906 0.500 0.049 30,000 75,000 18,284 4,571 7,313…

Many pharmaceutical and biotech applications require that product-contact surfaces be electropolished. Therefore, the ability to provide a high-quality electropolished surface is an important material property. 2205 duplex stainless steel can be electropolished to a finish of 0.38 microns or better, a finish that meets or exceeds ASME BPE standard surface finish requirements for electropolished surfaces. Although 2205 duplex stainless steel can easily meet the surface finish requirements of the pharmaceutical and biotech industries, the electropolished 2205 stainless steel surface is not as bright as the electropolished 316L stainless steel surface. This difference is due to the slightly higher metal dissolution rate of the ferrite phase compared to the austenite phase during electropolishing. Surface | Polishing Tube | Tubes Roughness Review | Bright Annealing Tubes | China USA Roughness Standard | EDM | EDM Roughness Comparator | Post Weld Cleaning | Cleaning of Tubes | Cleaning methods | Roughness Conversion Chart | Tube Surface Finish Types | Care Maintenance Stainless Steel | British American Standards For Tolerances Surface Finish Testing | Surface Finish Notes | Surface Texture Parameters | Measuring Surface Finish | Surface Finish…

2205 Duplex Stainless Steel Machining characteristics The machining of 2205 duplex stainless steel is similar to that of 316L, but there are still some differences. Cold forming operations must take into account the higher strength and higher work hardening properties of duplex stainless steels. Forming equipment may require higher load capacities, and in forming operations, 2205 stainless steel will exhibit higher resilience than standard austenitic stainless steels. The higher strength of 2205 duplex stainless steel makes it more difficult to machine than 316L. The welding of 2205 duplex stainless steel can use the welding method of 316L stainless steel. However, heat input and interpass temperature must be tightly controlled to maintain the desired austenite-ferrite phase ratio and avoid precipitation of detrimental intermetallic phases. A small amount of nitrogen in the welding gas helps avoid these problems. When performing welding procedure qualification for duplex stainless steels, the commonly used method is…

Chemical Composition of ASTM A213 / ASME SA 213 317 317L 317LM 317LMN Stainless Steel Grade C Mn P Sulphur Si Cr Nickel Mo N Cu Weight % 317 S31700 18.00 11.00 3.00 Min.   0.08 2.00 0.045 0.030 1.00 20.00 15.00 4.00 Max. 317L S31703 18.00 11.00 3.00 Min. 0.035 2.00 0.045 0.030 1.00 20.00 15.00 4.00   Max. 317LM S31725 18.00 13.50 4.00   Min.   0.03 2.00 0.045 0.030 1.00 20.00 17.50 5.00 0.20 0.75 Max 317LMN S31726 17.00 13.50 4.00 0.10   Min. 0.03 2.00 0.045 0.030 1.00 20.00 17.50 5.00 0.20 0.75 Max. EN 10216-5 1.4439 16.50 12.50 4.00     Min. 0.030 2.00 0.040 0.015 1.00 18.50 14.50 5.00     Max. EN 10217-7 1.4438 17.50 13.00 3.00     Min. 0.030 2.00 0.045 0.030 1.00 19.50 16.00 4.00     Max. Mechanical Properties of 317 317L Stainless Steel Tubes       Tensile…

ASTM A213 347/347H / 347HFG Stainless Steel Tubes Chemical Composition Grade 347 347H 347HFG UNS Designation S34700 S34709 S34710 Carbon (C) Max. 0.08 0.04–0.10 0.06–0.10 Manganese (Mn) Max. 2.00 2.00 2.00 Phosphorous (P) Max. 0.04 0.04 0.04 Sulphur (S) Max. 0.03 0.03 0.03 Silicon (Si) Max. 0.75 0.75 0.75 Chromium (Cr) 17.0–20.0 17.0–20.0 17.0–20.0 Nickel (Ni) 9.0–13.0 9.0–13.0 9.0–13.0 Molybdenum (Mo) — — Nitrogen (N) — — — Iron (Fe) Bal. Bal. Bal. Other Elements Cb+Ta=10xC-1.0 Cb+Ta=8xC-1.0 Nb+Ta=8xC-1.0 347 347H 347HFG Stainless Steel Mechanical Properties Tensile Strength Tensile Strength Yield Strength Yield Strength Alloy UNS Spec MPa ksi MPa ksi Elongation in 2 inches (min.) % HarndessHBW 347 S34700 ASTMA213 515 75 205 30 35 192 347H S34709 ASME SA 213 515 75 205 30 35 192 347HFG S34710 — 550 80 205 30 35 192 347 347H 347HFG Stainless Steel Physical Properties Alloy UNSDesign Density kgs/dm³ Modulus of Elasticity(x106 psi) Mean…

ASME SA213 TP310S TP310H Chemical Composition Grade UNS Designation C Mn P S Si Cr Ni   S31002 0.02 max 2.0 max 0.020 max 0.015 max 0.15 max 24.0 – 26.0 19.0 – 22.0 310S S31008 0.08 max 2.0 max 0.045 max 0.030 max 1.00 max 24.0 – 26.0 19.0 – 22.0 310H S31009 0.04-0.10 2.0 max 0.045 max 0.030 max 1.00 max 24.0 – 26.0 19.0 – 22.0 TP310S TP310H Stainless Steel Mechanical Properties 1. 310S Stainless Steel Pipe Mechanical Properties at Room Temperature   TP310H TP310H TP310S TP310S   Typical  Minimum Typical  Minimum Tensile Strength, MPa 645 515 595 515 Yield Stress (0.2 % offset), MPa 355 205 295 205 Elongation (Percent in 50mm) 52 35 52 35 Hardness (Rockwell) – 90 HRB Max – 90 HRB Max 310S Stainless Steel Physical Properties Alloy UNS Spec. Density Specific Gravity g/cm³ Modulus of Elasticity (x106 psi) Mean Coefficient of…

ASME SA 213 TP 316 / TP 316L EN 10216-5 1.4401 1.4404 Chemical Composition  Grade TP316 TP 316L 1.4401 1.4404 UNS Designation S31600 S31603     Carbon (C) Max. 0.08 0.035 0.07 0.030 Manganese (Mn) Max. 2.00 2.00 2.00 2.00 Phosphorous (P) Max. 0.045 0.045 0.040 0.040 Sulphur (S) Max. 0.030 0.030 0.015 0.015 Silicon (Si) Max. 1.00 1.00 1.00 1.00 Chromium (Cr) 16.0 – 18.0 16.0 – 18.0 16.5 – 18.5 16.5 – 18.5 Nickel (Ni) 10.0 – 14.0 10.0 – 14.0 10.0 – 13.0 10.0 – 13.0 Molybdenum (Mo) 2.0 – 3.0 2.0 – 3.0 2.0 – 2.5 2.0 – 2.5 Nitrogen (N) Max. – – 0.015 0.015 Iron (Fe) Remainder Remainder Remainder Remainder Other Elements – – – – * Maximum carbon content of 0.04% acceptable for drawn tubes General Properties 316 316L Stainless Steel Tubes Related Links 316L Chemical Composition316L Resistance to Corrosion316L Physical Properties316L Mechanical Properties316L Oxidation…

Checmical Composition of ASME SA213 304 304L 304H and EN 10216-5 1.4301 1.4307 1.4948 Grade – C Mn Si P S Cr Mo Ni N 304/S30400 min.max. -0.08 -2.0 -1.00 -0.045 -0.030 18.0-20.0 – 8.0-11.0 – EN 10216-5 1.4301 min.max. -0.07 -2.0 -1.00 -0.040 -0.015 17.00-19.5 – 8.0-10.5 -0.11 304L/S30403 min.max. -0.035 -2.0 -1.00 -0.045 -0.030 18.0-20.0 – 8.0-12.0 – EN 10216-5 1.4307 min.max. -0.030 -2.0 -1.00 -0.040 -0.015 17.5-19.5 – 8.0-10.0 -0.11 304H /S30409 min.max. 0.04-0.10 -2.0 -1.00 -0.045 -0.030 18.0-20.0 – 8.0-11.0 – EN 10216-5 1.4948 min.max. 0.04-0.08 -2.0 -1.00 -0.035 -0.015 17.0-19.0 – 8.0-11.0 -0.11 TP304L General PropertiesTP304L Chemical CompositionTP304L Resistance to CorrosionTP304L Physical PropertiesTP304L Mechanical PropertiesTP304L WeldingTP304L Heat TreatmentTP304L Cleaning304/304L/304LN/304H Tubing and Pipe304/304L Stainless Steel Tubing

We are specialized manufacturer of ASME SA249 ASTM A249 TP304, ASTM A249 TP304L, ASTM A249 TP304H, ASTM A249 TP316, ASTM A249 TP316L, ASTM A249 TP316H, ASTM A249 TP316Ti, ASTM A249 TP321 TP321H, ASTM A249 TP309H TP309S, ASTM A249 TP310S TP 310H, ASTM A249 TP347 Welded Tubes and ASTM A249 Welded Pipe. What is ASTM A249 ASME SA249? ASTM A249 is specifies standard specification for nomina wall thickness welded tubes and heavily cold worked welded tubes made from the austenitic steel with various grades intended for such use as a boiler, superheater, heat exchanger, or condenser tubes. Heat and product analysis shall conform to the requirements as to chemical composition for carbon, manganese, phosphorous, sulfur, silicon, chromium, nickel, molybdenum, nitrogen, copper, and others. All materials shall be furnished in the heat-treated condition in accordance with the required solution temperature and quenching method. ASTM A249 Tubing Test Items When the final heat treatment is in a continuous furnace, the number…

ASME SA 213 TP321 321H vs EN 10216-5 1.4541 Chemical Composition Grade 321 321H EN 10216-5 1.4541 UNS Designation S32100 S32109 Carbon (C) Max. 0.08 0.04–0.10 0.08 Manganese (Mn) Max. 2.00 2.00 2.00 Phosphorous (P) Max. 0.045 0.045 0.040 Sulphur (S) Max. 0.03 0.03 0.015 Silicon (Si) Max. 1.00 1.00 1.00 Chromium (Cr) 17.0–20.0 17.0–20.0 17.0-19.0 Nickel (Ni) 9.0–12.0 9.0–12.0 9.0–12.0 Molybdenum (Mo) — — Nitrogen (N) – – Iron (Fe) Bal. Bal. Bal. Other Elements Ti=5(C+N) to 0.70% Ti=4(C+N) to 0.70% Ti=5(C+N) to 0.70% General PropertiesChemical CompositionResistance to CorrosionPhysical PropertiesMechanical PropertiesHeat TreatmentFabricationElevated Temperature Oxidation ResistanceOxidation Behavior of Type 321 Stainless Steel Tube321 S32100 Chemical Composition Comparison Table Difference Between 321 and 347 Stainless Steel

ASTM A213 321 321H 347 347H Chemical Composition Grade 321 321H 347 347H UNS Designation S32100 S32109 S34700 S34709 Carbon (C) Max. 0.08 0.04–0.10 0.08 0.04-0.10 Manganese (Mn) Max. 2.00 2.00 2.00 2.00 Phosphorous (P) Max. 0.045 0.045 0.04 0.04 Sulphur (S) Max. 0.03 0.03 0.03 0.03 Silicon (Si) Max. 1.00 1.00 0.75 0.74 Chromium (Cr) 17.0–20.0 17.0–20.0 17.0–20.0 17.0–20.0 Nickel (Ni) 9.0–12.0 9.0–12.0 9.0–13.0 9.0–13.0 Molybdenum (Mo) – – – – Nitrogen (N) – – – – Iron (Fe) Bal. Bal. Bal. Bal. Other Elements Ti=5(C+N) to 0.70% Ti=4(C+N) to 0.70% Cb+Ta=10xC-1.0 Cb+Ta=10xC-1.0 A limitation with 321 is that titanium does not transfer well across a high temperature arc, so is not recommended as a welding consumable. In this case grade 347 is preferred – the niobium performs the same carbide stabilisation task but can be transferred across a welding arc. Grade 347 is therefore the standard consumable for welding 321. Grade…

Electroless nickel plating of stainless steel parts (drive shafts, meshing parts, moving parts, etc.) can improve the uniformity and self-lubricity of the plating, which is better than chromium plating. However, electroless nickel plating on stainless steel often results in unsatisfactory bonding between the plating layer and the substrate due to poor pretreatment, which has become an urgent problem in actual production. The original process: mechanical polishing→organic solvent degreasing→chemical degreasing→hot water washing→electrochemical degreasing→hot water washing→cold water washing→30%HCl→cold water washing→20%HCl(50℃)→cold water washing→flash plating Nickel → electroless nickel plating. Disadvantages of the original process: the effect of using HCL alone to remove the oxide scale is not good; the flash nickel plating of complicated shapes affects the uniformity of electroless nickel plating due to poor coverage; the longer process may cause the fresh surface of stainless steel to be re-oxidized. Film; flash nickel plating solution is easy to pollute chemical nickel plating solution,…

1. Difference in Chemical Composition: 316L is an ultra-low-carbon stainless steel, while 316 stainless steel is a low-carbon stainless steel, not an ultra-low-carbon stainless steel. Grade – C Mn Si P S Cr Mo Ni N TP316L min.max. -0.035 -2.0 -1.00 -0.045 -0.030 16.0-18.0 – 10.0-14.0 – 316 min.max. -0.08 -2.0 -1.00 -0.040 -0.030 16.0-18.0 – 10.0-14.0 – 2. Different in Yield Strength and Tensile Strength According to ASME SA213, for Tensile Strength, TP316L 485 min (N/MM2), 316 515 min (N/MM2). for Yield Strength, TP316L 170min (N/MM2), 316 205 min (N/MM2). Comparison of Composition Ranges of TP316 Stainless SteelSelection 316L Stainless Steel for High Purity Semiconductor Gas Filter AssembliesPipes Tubes Plates Bars Square Tubes Weight Calculation CalculatorPipe Working Pressure CalculationMetals Weight Calculator Calculation 316L Chemical Composition316L Resistance to Corrosion316L Physical Properties316L Mechanical Properties316L Oxidation Resistance316L Heat Treatment316L Fabrication

TP304 is equivalent to 06Cr19Ni10 (new GB standard 304), 304 is equivalent to 0Cr18Ni9(old GB standard 304). In terms of price, TP304 is also about USD 65 more expensive than 304 (per metric tons) What is the element content? The main difference between 304 and TP304 is its chromium content. The chromium content of TP304 is one higher, reaching more than 18, so its corrosion resistance and price are slightly higher than that of GB 304. Therefore, TP304 is more expensive than 304 in price, and the ingredients are as follows: Grade – C Mn Si P S Cr Mo Ni N TP304 min.max. -0.08 -2.0 -1.00 -0.045 -0.030 18.0-20.0 – 8.0-11.0 – 304 min.max. -0.08 -2.0 -1.00 -0.040 -0.015 17.00-19.5 – 8.0-10.5 – General PropertiesChemical CompositionResistance to CorrosionHeat ResistancePhysical PropertiesMechanical PropertiesWeldingHeat TreatmentCleaning304/304L/304LN/304H Tubing and PipeStainless Steel ” L” “H” GradeDifference Between 304H and 347HDifference Between 304 304L and 321304…

Test Items ASTM A312 / ASME SA312 ASTM A269 ASTM A213 / ASME SA213 or ASTM A213/A269 Tensile StrengthTest Lot≤100Pcs, 1Pcs Per LotLot＞100Pcs, 2 Pcs Per Lot no requirement Lot≤50Pcs, 1Pcs Per LotLot＞50Pcs, 2 Pcs Per Lot Hardness Test no requirement 2 Pcs 2 Pcs Flaring Test 5% of Each Lot no requirement Each end of one finihed tubes Flattening Test no requirement 1 Pcs each end of another finihed tubes Intergranular Test according to order according to order according to order Grain Size 304H/321H/316H/347H no requirement 304H/321H/316H/347H Eddy Current Test or Hydrostatic Test alternative alternative alternative Ultrasonic Test according to order according to order according to order

Material Form Type of Discontinuity Water-Washable Penetration Time* Aluminium Castings Porosity, Cold Shuts 5 to 15 min Aluminium Extrusions, Forgings Laps NR** Aluminium Welds Lack of Fusion, Porosity 30 Aluminium All Cracks, Fatigue Cracks 30, not recommended for fatigue crack Magnesium Castings Porosity, Cold Shuts 15 Magnesium Extrusions, Forgings Laps not recommended Magnesium Welds Lack of Fusion, Porosity 30 Magnesium All Cracks, Fatigue Cracks 30, not recommended for fatigue crack Steel Castings Porosity, Cold Shuts 30 Steel Extrusions, Forgings Laps not recommended Steel Welds Lack of Fusion, Porosity 60 Steel All Cracks, Fatigue Cracks 30, not recommended for fatigue crack Brass & Bronze Castings Porosity, Cold Shuts 10 Brass & Bronze Extrusions, Forgings Laps not recommended Brass & Bronze Brazed Parts Lack of Fusion, Porosity 15 Brass & Bronze All Cracks 30 Brass & Bronze       Plastics All Cracks 5 to 30 Glass All Cracks 5 to 30…

PT Test Standard International Organization for Standardization (ISO) ISO 3059, Non-destructive testing – Penetration testing and magnetic particle testing – Viewing conditions ISO 3452-1, Non-destructive testing. Penetrant testing. Part 1. General principles ISO 3452-2, Non-destructive testing – Penetrant testing – Part 2: Testing of penetrant materials ISO 3452-3, Non-destructive testing – Penetrant testing – Part 3: Reference test blocks ISO 3452-4, Non-destructive testing – Penetrant testing – Part 4: Equipment ISO 3452-5, Non-destructive testing – Penetrant testing – Part 5: Penetrant testing at temperatures higher than 50 °C ISO 3452-6, Non-destructive testing – Penetrant testing – Part 6: Penetrant testing at temperatures lower than 10 °C ISO 10893-4: Non-destructive testing of steel tubes. Liquid penetrant inspection of seamless and welded steel tubes for the detection of surface imperfections. ISO 12706, Non-destructive testing – Penetrant testing – Vocabulary ISO 23277, Non-destructive testing of welds – Penetrant testing of welds – Acceptance levels European Committee for Standardization (CEN) EN 1371-1, Founding – Liquid penetrant inspection…

What is ASTM A269 and ASTM A312 / ASME SA312? ASTM A269 / A269M Standard Specification for Seamless and Welded Austenitic Stainless Steel Tubing for General Service ASTM A312 / A312M Standard Specification for Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipe StandardItem ASTM A213 ASTM A269 ASTM A312 Grade 304  304L 304H   304N  304LN316  316L 316Ti   316N  316LN321  321H   310S   310H  309S317  317L 347 347H 304  304L 304H 304N 304LN316  316L 316Ti 316N  316LN321 321H  310S 310H  309S317  317L 347 347H 304  304L 304H   304N  304LN316  316L 316Ti   316N  316LN321  321H  310S   310H  309S317  317L  347 347H Yield Strength(Mpa) ≥170；≥205 ≥170；≥205 ≥170；≥205 Tensile Strength(Mpa) ≥485；≥515 ≥485；≥515 ≥485；≥515 Elongation(%) ≥35 ≥35 ≥35 Hydrostatic Test OD(mm) Pressure max(MPa) OD(mm) Pressure max(MPa) OD(mm) Pressure max(MPa) D<25.4, 7Mpa D<25.4, 7Mpa D≤88.9, 17MPa 25.4≤D<38.1, 10Mpa 25.4≤D<38.1, 10Mpa 38.1≤D<50.8, 14Mpa 38.1≤D<50.8, 14Mpa 50.8≤D<76.2， 17MPa 50.8≤D<76.2， 17MPa D>88.9, 19MPa 76.2≤D<127， 24MPa 76.2≤D<127， 24MPa D≥127, 31Mpa D≥127, 31Mpa P=220.6t/D…

Stainless steel pipe is curved in the length direction, and the degree of curve is called the degree of curvature (Straightness). The curvature specified in the standard is generally divided into the following two types: A. Local curvature: Use a one-meter straight ruler to lean on the maximum bend of the stainless steel pipe, and measure the chord height (mm), which is the value of the local curvature. The unit is mm/m, and the expression is 2.5mm/m. . This method is also suitable for tube end curvature. B. Total curvature of the total length: Use a thin rope to tighten from both ends of the pipe, measure the maximum chord height (mm) at the bend of the steel pipe, and then convert it into a percentage of the length (in meters), which is the length of the stainless steel pipe The full-length curvature of the direction. For example: the length…

In the cross section of the stainless steel pipe, there is a phenomenon that the outer diameters are not equal, that is, there are maximum and minimum outer diameters that are not necessarily perpendicular to each other. The difference between the Maximum outer diameter and the minimum outer diameter is the Ovality (or out-of-roundness). In order to control the ovality, some stainless steel pipe standards stipulate the allowable tolerance of ovality, which is generally specified as not exceeding 80% of the outer diameter tolerance (implemented after negotiation between the supplier and the buyer). The general requirement standard for stainless steel pipe is ASTM A999. The OD under tolerance on all sizes is -0.031”. The over tolerance increases with OD size but for the range of 1-1/2 to 4 NPS the plus tolerance is also 0.031”. An additional ovality tolerance allowance is permitted for thin wall thickness pipe which is defined…

The wall thickness of stainless steel pipe cannot be the same everywhere, and there are objectively unequal wall thicknesses in the cross section and longitudinal pipe body, that is, uneven wall thickness. In order to control this non-uniformity, some stainless steel pipe standards such ASTM A312, ASTM A999 stipulate the allowable index of uneven wall thickness, which is generally specified not to exceed 80% of the wall thickness tolerance (implemented after negotiation between the supplier and the buyer). ASTM A269 Welded and Seamless General Service Tolerances, Inches Tolerances, Inches Tolerances, Inches Tolerances, Inches SizeInches OD,Inches Wall Ovality2 x Tol., In. Cut Length(b), In. Less than 1/2 ±0.005 ±15% —— +1/8–0 Over 1/2 to 1-1/2 ±0.005 ±10% –0.065 +1/8–0 Over 1-1/2 to 3-1/2 ±0.010 ±10% –0.095 +3/16–0 Over 3-1/2 to 5-1/2 ±0.015 ±10% –0.150 +3/16–0 Over 5-1/2 to 8 ±0.030 ±10% —— +3/16–0 Related References:Weight of SteelsStainless Steel Density Calculation MethodsCalculate…

Delivery length is also called the length required by the user or the length of the order. The standard has the following regulations on delivery length: A. Normal length / Random Length (also called non-fixed-length length): Any stainless steel tube whose length is within the length range specified by the standard and has no fixed length requirement is called normal length. For example, the structural stainless steel pipe standard stipulates: hot-rolled (extruded, expanded) steel pipe 3000mm ~ 12000mm; cold drawn (rolled) steel pipe 2000mm ~ 10500mm. B. Fixed Length: The fixed-length should be within the usual length range, which is a certain fixed-length dimension required in the contract. However, it is impossible to cut out the absolute fixed-length length in actual operation, so the standard stipulates the allowable positive deviation value for the fixed-length length. Take the structural stainless steel pipe standard as: The yield rate of production of fixed-length…

Deviation In the production process, because the actual size is difficult to meet the nominal pipe size requirement, that is, it is often larger or smaller than the nominal size, so the standard stipulates that there is a difference between the actual size and the nominal size of the stainless steel pipe. A positive difference is called a positive deviation, and a negative difference is called a negative deviation. Tolerance The standard stipulates that the sum of the absolute value of the positive and negative deviations of stainless steel pipes is called tolerance, also called “tolerance zone”. For wall thickness we have two choices, Minimum Wall Thickness and Average Wall Thickness. Difference Standard Specifications have different tolerance requests. Mainly specify in ASTM A999 or ASTM A1016 or EN 10216-5 Related References:Pipe ScheduleStainless Steel Tube SizeASME B36.10M – 2015 Welded and Seamless Wrought Steel PipeASME B36.19M – 2004 Stainless Steel Pipe…

A. Nominal Pipe size: It is the nominal size specified in the standard such ASME B36.10m, ASME B36.19m, the ideal size that users and manufacturers hope to obtain, and the order size specified in the contract. B. Actual Pipe size: It is the actual size obtained during the production process, which is often larger or smaller than the nominal size. This phenomenon of being larger or smaller than the nominal size is called deviation. Related References:Pipe ScheduleStainless Steel Tube SizeASME B36.10M Welded and Seamless Wrought Steel PipeASME B36.19M Stainless Steel Pipe Pipe ScheduleGauge SizeNominal Pipe SizeStainless Steel Pipe DimensionsSheet Metal GaugeStainless Steel Pipe SizeStainless Steel Tube SizeANSI Standard Pipe ChartInch to mm ChartB.W.G. – Birmingham Wire GaugeA.S.W.G. American Standard Wire GaugeGauge Tolerances of Stainless SteelConversion Table of Temperatue, Length,Mass,PressureNPS-Nominal-Pipe-Size and DN – Diametre NominalISO Tolerances For FastenersISO Tolerance Chart|Machining Process associated with ISO IT Tolerance GradeStainless Steel Thickness Weight TableGalvanized…

Due to the high strength of Duplex steel, it is usually possible to save material, such as reducing the wall thickness of the pipe. Take the use of SAF2205 and SAF2507 as an example. SAF2205 is suitable for use in chlorine-containing environments. The material is suitable for oil refining or other process media mixed with chloride. SAF2205 is especially suitable for heat exchangers that use chlorine-containing aqueous solutions or brackish water as the cooling medium. The material is also suitable for diluted sulfuric acid solutions and pure organic acids and their mixtures. Such as: oil pipes in the oil and natural gas industry: crude oil desalination in oil refineries, sulfur-containing gas purification, wastewater treatment equipment; cooling systems that use brackish water or chlorinated solutions. Compared with austenitic stainless steel 1) The yield strength is more than twice that of ordinary austenitic stainless steel, and it has sufficient plastic toughness for…

　 　 C C Si Si Mn Mn P P S S Cr Cr Ni Ni Mo Mo N N Cu Cu Ti Ti Nb Nb 　 　 min max min max min max min max min max min max min max min max min max min max min max min max DIN 17456 1.4301 0.00 0.070 0.00 1.00 0.00 2.00 0.00 0.045 0.00 0.015 17.00 19.00 8.00 10.50 　 　 　 　 　 　 　 　 　 　 DIN 17456 1.4306 0.00 0.030 0.00 1.00 0.00 2.00 0.00 0.045 0.00 0.015 18.00 20.00 10.00 12.00 　 　 　 　 　 　 　 　 　 　 DIN 17456 1.4311 0.00 0.030 0.00 1.00 0.00 2.00 0.00 0.045 0.00 0.015 17.00 19.50 8.50 11.50 　 　 　 　 　 　 　 　 　 　 DIN 17456 1.4541 0.00 0.080 0.00 1.00 0.00 2.00 0.00 0.045 0.00 0.015 17.00 19.00 9.00 12.00…

　 　 C C Si Si Mn Mn P P S S Cr Cr Ni Ni Mo Mo N N Cu Cu Ti Ti Nb Nb 　 　 min max min max min max min max min max min max min max min max min max min max min max min max J3459 SUS304TP 0.00 0.080 0.00 1.00 0.00 2.00 0.00 0.040 0.00 0.030 18.00 20.00 8.00 11.00 　 　 　 　 　 　 　 　 　 　 J3459 SUS304HP 0.040 0.100 0.00 0.75 0.00 2.00 0.00 0.040 0.00 0.030 18.00 20.00 8.00 11.00 　 　 　 　 　 　 　 　 　 　 J3459 SUS304LTP 0.00 0.030 0.00 1.00 0.00 2.00 0.00 0.040 0.00 0.030 18.00 20.00 9.00 13.00 　 　 　 　 　 　 　 　 　 　 J3459 SUS310STP 0.00 0.080 0.00 1.50 0.00 2.00 0.00 0.040 0.00 0.030 24.00 26.00 19.00 22.00 　 　 　 　…

Stainless steel pipe and Stainless Steel Tube is a commonly used material, and it is widely used in equipment and mechanical parts that require good overall performance (corrosion resistance and formability). In order to maintain the inherent corrosion resistance of stainless steel, steel must contain more than 18% chromium and more than 8% nickel. Stainless steel seamless pipes are produced in accordance with ASTM A312 and Stainless Steel Tubes are produced according to ASTM A213 / ASME SA213 When the inner diameter of the stainless steel pipe is greater than 26mm, the hardness of the inner wall of the pipe can be tested with a Rockwell or surface Rockwell hardness tester. The solution annealed stainless steel pipe with the inner diameter of the stainless steel tube above 6.0mm and the wall thickness below 13mm can use the W-B75 Webster hardness tester, which is very fast and easy to test, and…

TP304H stainless steel has high thermal strength and good oxidation resistance, widely used in the high temperature section of boiler superheaters and reheaters over 600℃, and the maximum operating temperature can reach to 760℃. The use of TP304H stainless steel, to a certain extent, solves the over-temperature tube burst caused by the large temperature difference of the furnace smoke, and significantly improves the safety of the boiler operation. However, TP304H stainless steel is prone to structural transformation during long-term high temperature operation, resulting in material aging. Therefore, studying the structure transformation of TP304H austenitic stainless steel and its influencing factors when operating under high temperature conditions is of great significance for rationally arranging the running time of the material, monitoring the damage degree of the pipeline online, and improving the material itself. For this reason, through the high temperature aging simulation test, the influence of aging temperature and time on…

In the early stage of forging deformation of stainless steel flat welded flanges, because the porous preform is easy to deform, the deformation force is small, and the density increases rapidly. In the later stage of forging forming, due to the closure of most of the pores, the deformation resistance increases, and the deformation force required to eliminate the residual pores increases rapidly. The deformation resistance is closely related to the deformation temperature. A higher deformation temperature is conducive to compaction and reduces the deformation resistance. The higher deformation rate is also conducive to the compactness of stainless steel flat welded flanges. The forging process of stainless steel flat welded flanges has stricter equipment requirements than traditional die forging, and the displacement characteristics of the punch must match the deformation and compact characteristics of the preform. The contact time between the blank and the mold should be as short as…

304 stainless steel products often have various cracking phenomena during the deep drawing process. Among them, lateral or point cracks on the sidewall are common processing failure forms of 304 stainless steel products with relatively large deep drawing. Especially in recent years, the cost-reduction work of stainless steel products processing procedures has continued to advance. The number of drawing passes has been reduced from 5 times to 3 times commonly used at present, and the number of intermediate annealing has been changed to one annealing or no annealing after stamping. The formability of the material puts forward higher requirements. The lateral or point-like cracking defects on the sidewall of stainless steel products may be caused by material inclusions, delta ferrite and other material intergranular defects, or may be caused by factors such as the drawing process and drawing oil during the processing of stainless steel products. The lateral or point…

The main methods for continuous welding of ferritic stainless steel are: TIG welding, high frequency induction HFI welding, plasma arc welding PAW and excitation welding. High-quality welded pipes are more frequently used for high-frequency induction welding and excitation welding. Welding characteristics of stainless steel tubes for automobiles: Compared with traditional fusion welding, laser welding and high-frequency welding have the characteristics of fast welding speed, high energy density, and small heat input. Therefore, the heat affected zone is narrow, the degree of grain growth is small, the welding deformation is small, and the cold forming performance is good. It is easy to realize automatic welding and single-pass penetration of thick plates. The most important feature is that the I-shaped groove butt welding does not require filler materials. The use of laser welding and high-frequency welding of ferritic stainless steel pipes can meet the requirements of the cold working process for the…

In pipeline engineering, stainless steel flanges are mainly used for pipeline connections. Including: stainless steel plate flat welding flange, stainless steel neck flat welding flange, stainless steel neck butt welding flange, stainless steel socket welding flange, stainless steel threaded flange, stainless steel flange cover, stainless steel neck butt welding ring loose sleeve Flange, stainless steel flat welding ring loose flange, stainless steel ring groove face flange and flange cover, stainless steel large diameter flat flange, stainless steel large diameter high neck flange, stainless steel blind plate, stainless steel butt welding ring loose sleeve method Flange, stainless steel rotating flange, stainless steel anchor flange, stainless steel surfacing/overlay welding flange Pressure rating: 0.6Mpa ～32Mpa, 150Lbs ～2500Lbs, PN0.25-PN42.0Mpa Material: 20#, 304, 304L, 321, 316, 316L, 310S and other materials Common standards for flanges: ISO flanges KF fittings and flanges and CF fittings and CF flanges. China Standard: GB9113-2000～GB9124-2000 American Standard: ASTM A182 Flanges, forged, ASME…

Austenitic stainless steel has good corrosion resistance and high temperature oxidation resistance properties, good low temperature performance and excellent mechanical and processing properties. Therefore, it is widely used in chemical, petroleum, power, nuclear engineering, aerospace, marine, pharmaceutical, light industry, textile and other sectors. Its main purpose is to prevent corrosion and rust. The corrosion resistance of stainless steel mainly depends on the surface passivation film. If the film is incomplete or defective, the stainless steel will still be corroded. In engineering, pickling and passivation treatment is usually carried out to make the corrosion resistance potential of stainless steel play a greater role. In the process of forming, assembling, welding, welding seam inspection (such as flaw detection, pressure test) and construction marking of stainless steel equipment and components, surface oil stains, rust, non-metallic dirt, low melting point metal contaminants, paint, and welding Slag and spatter, etc., these substances affect the surface…

All metals can react with oxygen in the atmosphere to form an oxide film on the surface, while the iron oxide formed on the ordinary carbon steel tube continues to oxidize, causing the corrosion to continue to expand and eventually forming holes. Paint or oxidation-resistant metal can be used for electroplating to protect the surface of carbon steel, but this protective layer is a thin film. If the protective layer is damaged, the steel below will begin to rust again. Stainless steel tube corrosion resistance is related to the chromium content, when the chromium content in the steel reaches 12%, in the atmosphere, a layer of passivated and dense chromium-rich oxide is formed on the surface of the stainless steel tube to protect the surface and prevent further Oxidation. This oxide layer is extremely thin, and the natural luster of the steel surface can be seen through it, giving the…

The high-temperature nitriding process refers to holding for a certain time under high temperature and nitrogen-containing atmosphere to obtain a thicker nitriding layer, so that the surface layer of ferritic stainless steel or austenitic ferritic duplex stainless steel is finally transformed into high nitrogen austenite The process of the structure of the stainless steel. Here we studies the influence of heating temperature, holding time, nitrogen pressure and other parameters on the high-temperature nitriding process by performing high-temperature nitriding on duplex stainless steel, hoping to provide a new technical approach for the in-depth study and further application of high-nitrogen stainless steel. Under the process conditions that the heating temperature is not less than 1200℃, the holding time is not less than 24h, and the nitrogen pressure is not less than 0.2MPa, a nitriding layer with a thickness of more than 2.0mm on one side can be obtained in stainless steel. For…

304 stainless steel: has good corrosion resistance, heat resistance, low temperature strength and mechanical properties, good hot workability such as stamping, bending, and no heat treatment hardening. Uses: tableware, cabinets, boilers, auto parts, medical appliances, building materials, food industry. 310 310S stainless steel: high temperature resistance, generally used in boilers and automobile exhaust pipes, and other properties are general. 303 stainless steel: By adding a small amount of sulfur and phosphorus, it is easier to cut than 304 stainless steel. Other properties are similar to those of 304 stainless steel seamless pipe. 302 stainless steel: 302 stainless steel rods are widely used in auto parts, aviation and aerospace hardware tools, and chemicals. The details are as follows: handicrafts, bearings, sliding flowers, medical instruments, electrical appliances, etc. Features: 302 stainless steel ball belongs to austenitic steel, which is close to 304, but the hardness of 302 is higher, HRC≤28, and it…

The main function of the flange is to facilitate the disassembly and inspection of the pipeline, to facilitate the replacement of a certain section of the pipeline, to connect the pipeline and maintain the sealing performance of the pipeline; to facilitate the closure of a certain pipeline. The main features of carbon steel flanges: It has compact structure, reliable sealing, simple structure and convenient maintenance. The sealing surface and the contact surface are often closed, not easy to be eroded by the medium, and easy to operate and maintain. It is suitable for general working media such as water, solvent, acid and natural gas. It is suitable for media with harsh working conditions, such as oxygen, hydrogen peroxide, methane and ethylene. It is widely used in various industries. The carbon steel flange is easy to operate and opens and closes quickly. It only needs to rotate 90° from fully open…

304 stainless steel products often appear various cracking phenomena during the stretching process. Among them, lateral or point cracks on the sidewalls are common processing failure modes of 304 stainless steel products with relatively large stretching. Especially in recent years, the cost-reduction work of stainless steel products processing procedures has continued to advance. The number of stretching passes has been reduced from 5 times to 3 times currently commonly used. The intermediate annealing is changed to one annealing or no annealing after stamping. The formability of the material puts forward higher requirements. The lateral or point cracking defects of the side wall of stainless steel products may be caused by material inclusions, delta ferrite and other material intergranular defects, or may be caused by factors such as the stretching process and stretching oil in the processing of stainless steel products. The lateral or pitting cracking of the side wall of…