Size

MW VS AW What is Minimum Wall Thickness and Average Wall Thickness?

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.

Size ژانویه 6, 2024

ASTM A312 TP316L Schdule | ASTM A312 TP316L Weight | ASTM A312 TP316 Size

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…

Size مارس 9, 2022

Straightness of Stainless Steel Pipe

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…

Size می 14, 2021

Stainless Steel Pipe Ovality

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…

Size آوریل 24, 2021

Wall Thickness of Stainless Steel Pipe

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…

Size آوریل 20, 2021

Length of Stainless Steel Pipe and Tube

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…

Size آوریل 17, 2021

Tolerance of Stainless Steel Tubes and Pipes

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…

Size آوریل 15, 2021

What is Nominal Pipe Size and Actual Pipe Size

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…

Size آوریل 13, 2021

Stainless Steel Tube Sizes | Stainless Steel Tubing Sizes

304 Stainless Steel Tube Sizes, 304L Stainless Steel Tube Sizes, 316 Stainless Steel Tubing Sizes, 316L Stainless Steel Tube Sizes, (Metric): 6 mm, 10mm, 12mm, 20mm, 25mm, 25.4mm, 31.75mm, 32.0mm, 38.1mm, 44.5mm…Stainless Steel Tubing Sizes (Fractional): ¼”, 3/8″, ½”, ¾” and 1″… 304 304L 316 316L Stainless Steel Tube Sizes and Weight OD in mm, Weight in kgs/m (Weight result base on Calculate of “Weight= 0.02507 ×T (D – T )”.) Wall Thickness mmOD mm 0.5 0.6 0.7 0.8 1.0 1.2 1.6 2.0 2.6 3.0 3.2 3.6 6.0 0.069 0.081 0.093 0.104 0.125 0.144 0.176 – – – – – 10.0 0.119 0.141 0.163 0.184 0.225 0.264 0.336 – – – – – 12.7 0.153 0.182 0.210 0.238 0.293 0.345 0.444 – – – – – 14.0 0.169 0.201 0.233 0.264 0.325 0.384 0.496 – – – – – 15.87 0.192 0.229 0.266 0.301 0.372 0.440 0.571 0.694 – –…