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Seamless Stainless Steel Tubing



Seamless Stainless Steel Tubing




Guanyu Tube is a leading manufacturer of Seamless Stainless Steel Tubing with wide range of Grades and Sizes. The OD size is the difference between pipes and tubes. The OD size of pipes much bigger than tubes. Mainly standard is ASTM A312. A large number of pipes used for conveying fluids, such as oil, gas, water, gas, steam,heat exchanger,mechanical machine. TP304/L, 316/L, 321, S31803.

Seamless Stainless Steel Tubing Size

OD: 219.1 - 508mm (8 INCH to 20 INCH)
WT: 12.7-60 mm
Production Capacity: 500 tons/Month

Seamless Stainless Steel Tubings Application
Power generation, Boiler, Electricity, Mechanical, Shipbuilding, Gas cylinder, Chemical, Offshore and oil service…etc.

Seamless Stainless Steel Tubing Main Testing Terms and Procedure:

  • 1. Heat Treatment and Solution Annealing / Bright Annealing
  • 2. Cutting to required length and deburring;
  • 3. Chemical Composition Analysis Test With 100% PMI and One tube from each heat by Direct Reading Spectrometer
  • 4. Visual Test and Endoscope Test for Surface Quality Test
  • 5. 100% Hydrostatic Test and 100% Eddy Current Test
  • 6. Ultrasonic Test subject to the MPS (Material Purchase Specification)
  • 7. Mechanical Tests includes Tension Test, Flattening Test, Flaring Test, Hardness Test
  • 8. Impact Test subject to Standard request
  • 9. Grain Size Test and Intergranular Corrosion Test
  • 10. Ultrasoic measuring of Wall Thickness
  • Seamless Stainless Steel Tubing Marking & Packing

  • Marking according to MPS and Standard
  • Stainless Steel Tubes Ends with Caps according to PO
  • In Seaworthy Wooden Cases With Plastic Paper protect
  • In Plywood Cases With Plastic Paper Protect(Recommend, All Plywood Cases made by ourselves with lower cost.)
  • Steel Racks Package
  • Hexagonal packing in Bundles


  • Stainless Steel Tubing
    Visual Testing
    Stainless Steel Tube PMI Testing
    100% PMI Testing
    Stainless Steel Tube Hydraustatic Testing
    Hydraustatic Testing

    Stainless Steel Tube in Plywood Cases
    Stainless Steel Tube Package
    Plywood Cases Package

    Stainless Steel Tube in Plywood Cases With Iron Frame
    Iron Frame Plywood Case Package
    Seamless Stainless Steel Tubing Quality Control

    Third Part Inspection Accepted according to EN 10204 3.2
    Stainless Steel Pipe Specification:
    ASTM A312/A312M Standard Specification for Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipe
    ASTM A790 Standard Specification for Seamless and Welded Ferritic/Austenitic Stainless Steel Pipe
    Standard
    Item
    ASTM A213 ASTM A269 ASTM A312
    Grade 304  304L 304H   304N  304LN
    316  316L 316Ti   316N  316LN
    321  321H   310S   310H  309S
    317  317L 347 347H
    304  304L 304H 304N 304LN
    316  316L 316Ti 316N  316LN
    321 321H  310S 310H  309S
    317  317L 347 347H
    304  304L 304H   304N  304LN
    316  316L 316Ti   316N  316LN
    321  321H  310S   310H  309S
    317  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 D(mm) Pmax
    (Mpa)
    D(mm) Pmax
    (Mpa)
    D(mm) Pmax
    (Mpa)
    D<25.4 7 D<25.4 7 D≤88.9 17
    25.4≤D<38.1 10 25.4≤D<38.1 10
    38.1≤D<50.8 14 38.1≤D<50.8 14
    50.8≤D<76.2 17 50.8≤D<76.2 17 D>88.9 19
    76.2≤D<127 24 76.2≤D<127 24
    D≥127 31 D≥127 31
    P=220.6t/D P=220.6t/D P=2St/D S=50%Rp0.2
    Intergranular Corrosion Test ASTM A262 E ASTM A262 E ASTM A262 E
    Eddy Current Test ASTM E426 ASTM E426 ASTM E426
    O.D. Tolerance
    (mm)
    O.D. O.D.
    Tolerance
    O.D. O.D.
    Tolerance
    O.D. O.D.
    Tolerance
    D<25.4 +/-0.10 D<38.1 +/-0.13 10.3≤D≤48.3 +0.40/-0.80
    25.4≤D≤38.1 +/-0.15
    38.1<D<50.8 +/-0.20 38.1≤D<88.9 +/-0.25 48.3<D≤114.3 +0.80/-0.80
    50.8≤D<63.5 +/-0.25
    63.5≤D<76.2 +/-0.30 88.9≤D<139.7 +/-0.38 114.3<D≤219.1 +1.60/-0.80
    76.2≤D≤101.6 +/-0.38
    101.6<D≤190.5 +0.38/-0.64 139.7≤D<203.2 +/-0.76 219.1<D≤457.0 +2.40/-0.80
    190.5<D≤228.6 +0.38/-1.14
    W.T. Tolerance
    (mm)
    O.D. W.T.
    Tolerance
    O.D. W.T.
    Tolerance
    O.D. W.T.
    Tolerance
    D≤38.1 +20%/-0 D<12.7 +/-15% 10.3≤D≤73.0 +20.0%/-12.5%
    12.7≤D<38.1 +/-10% 88.9≤D≤457.0
    t/D ≤5%
    +22.5%/-12.5%
    D>38.1 +22%/-0
    D≥38.1 +/-10% 88.9≤D≤457.0
    t/D >5%
    +15.0%/-12.5%

    Seamless Stainless Steel Tubing Outside Diameter: 6 - 830mm
    Seamless Stainless Steel Tubing Wall Thickness: 0.50 - 60mm
    EN 10216-5; DIN 17456, DIN 17458, DIN 2462, DIN 17455
    GB/T14975; T14976; T13296; GB5310;
    Seamless Stainless Steel Tubing Standard(Norm): ASTM A213, A269, A312, A511, A789, A790, A928, A999, A1016, ASTM B161, ASTM B163, ASTM B165, ASTM B167, ASTM B338, ASTM B407, ASTM B423, ASTM B444,ASTM B619, ASTM B622, ASTM B626, ASTM B668, ASTM B677, ASTM B829
    JIS G3459, JIS G3463, JIS G3446, JIS G3447, JIS G3448, JIS G3468
    GOST 9940;GOST 9941;

      Stainless Steel Tube/Pipe/Tubing, Nickel Alloy Tubing, Brass Alloy Tubing, Copper Nickel Pipe Material Grades


    Seamless Stainless Steel Pipe Schedule
    Nominal Pipe Size
    O.D. Inches

    Wall Thickness

    5s
    5
    10s
    10
    20
    30
    40s & Std
    40
    60
    80s & E.H.
    80
    100
    120
    140
    160
    Dbl. E.H.
    1/8 .405   .035  .049  .049    .068  .068   .095  .095   
    1/4 .540   .049  .065  .065    .088  .088    .119  .119   
    3/8 .675   .049  .065  .065    .091  .091    .126  .126   
    1/2 .840 .065  .065  .083  .083    .109  .109    .147  .147    .187  .294 
    3/4 1.050 .065  .065  .083  .083    .113  .113    .154  .154    .218  .308 
    1 1.315 .065  .065  .109  .109    .133  .133    .179  .179    .250  .358 
    1 1/4 1.660 .065  .065  .109  .109    .140  .140    .191  .191    .250  .382 
    1 1/2 1.900 .065  .065  .109  .109    .145  .145    .200  .200    .281  .400 
    2 2.375 .065  .065  .109  .109    .154  .154    .218  .218    .343  .436 
    2 1/2 2.875 .083  .083  .120  .120    .203  .203    .276  .276    .375  .552 
    3 3.500 .083  .083  .120  .120    .216  .216    .300  .300    .437  .600 
    3 1/2 4.000 .083  .083  .120  .120    .226  .226    .318  .318    .636 
    4 4.500 .083  .083  .120  .120    .237  .237  .281  .337  .337    .437    .531  .674 
    4 1/2 5.000   .247    .355    .710 
    5 5.563 .109  .109  .134  .134    .258  .258    .375  .375    .500    .625  .750 
    6 6.625 .109  .109  .134  .134    .280  .280    .432  .432    .562    .718  .864 
    7 7.625   .301    .500    .875 
    8 8.625 .109  .109  .148  .148  .250  .277  .322  .322  .406  .500  .500  .593  .718  .812  .906  .875 
    9 9.625   .342    .500   
    10 10.750 .134  .134  .165  .165  .250  .307  .365  .365  .500  .500  .593  .718  .843  1.000  1.125   
    11 11.750   .375    .500   
    12 12.750 .156  .165  .180  .180  .250  .330  .375  .406  .562  .500  .687  .843  1.000  1.125  1.312   
    14 14.000 .156    .188  .250  .312  .375  .375  .437  .593  .500  .750  .937  1.093  1.250  1.406   
    16 16.000 .165    .188  .250  .312  .375  .375  .500  .656  .500  .843  1.031  1.218  1.437  1.593   
    18 18.000 .165    .188  .250  .312  .437  .375  .562  .750  .500  .937  1.156  1.375  1.562  1.781   
    20 20.000 .188    .218  .250  .375  .500  .375  .593  .812  .500  1.031  1.280  1.500  1.750  1.968   
    24 24.000 .218    .250  .250  .375  .562  .375  .687  .968  .500  1.218  1.531  1.812  2.062  2.343   
    26 26.000   .312  .500    .375    .500   
    28 28.000   312  .500  .625  .375   
    30 30.000 .250    .312  .312  .500  .625  .375    .500   
    32 32.000   .312  .500  .625  .375  .688    .500   
    34 34.00   .312  .500  .625  .375  .688   
    36 36.000   .312    .625  .375  .750    .500   

    Seamless Stainless Steel Tubing Size according to ASME B36.10M ASME B36.19M

    Nominal Pipe Size ⅛ to Nominal Pipe Size 3½

    Nominal Pipe Size DN
    mm
    OD
    inches (mm)
    Wall Thickness
    inches (mm)
    SCH 5 SCH 10 SCH 30 SCH 40/STD SCH 80 SCH 120 SCH 160 XXS
    6 0.405 in (10.29 mm) 0.035 in (0.889 mm) 0.049 in (1.245 mm) 0.057 in (1.448 mm) 0.068 in (1.727 mm) 0.095 in (2.413 mm) --- --- ---
    ¼ 8 0.540 in (13.72 mm) 0.049 in (1.245 mm) 0.065 in (1.651 mm) 0.073 in (1.854 mm) 0.088 in (2.235 mm) 0.119 in (3.023 mm) --- --- ---
    10 0.675 in (17.15 mm) 0.049 in (1.245 mm) 0.065 in (1.651 mm) 0.073 in (1.854 mm) 0.091 in (2.311 mm) 0.126 in (3.200 mm) --- --- ---
    ½ 15 0.840 in (21.34 mm) 0.065 in (1.651 mm) 0.083 in (2.108 mm) --- 0.109 in (2.769 mm) 0.147 in (3.734 mm) --- 4.78mm 0.294 in (7.47 mm)
    ¾ 20 1.050 in (26.67 mm) 0.065 in (1.651 mm) 0.083 in (2.108 mm) 2.41mm 0.113 in (2.870 mm) 0.154 in (3.912 mm) --- 5.56mm 0.308 in (7.823 mm)
    1 25 1.315 in (33.40 mm) 0.065 in (1.651 mm) 0.109 in (2.769 mm) 2.90mm 0.133 in (3.378 mm) 0.179 in (4.547 mm) --- 6.35mm 0.358 in (9.093 mm)
    32 1.660 in (42.16 mm) 0.065 in (1.651 mm) 0.109 in (2.769 mm) 0.117 in (2.972 mm) 0.140 in (3.556 mm) 0.191 in (4.851 mm) --- 6.35mm 0.382 in (9.703 mm)
    40 1.900 in (48.26 mm) 0.065 in (1.651 mm) 0.109 in (2.769 mm) 0.125 in (3.175 mm) 0.145 in (3.683 mm) 0.200 in (5.080 mm) --- 7.14mm 0.400 in (10.160 mm)
    2 50 2.375 in (60.33 mm) 0.065 in (1.651 mm) 0.109 in (2.769 mm) 0.125 in (3.175 mm) 0.154 in (3.912 mm) 0.218 in (5.537 mm) 0.250 in (6.350 mm) 8.74mm 0.436 in (11.074 mm)
    65 2.875 in (73.02 mm) 0.083 in (2.108 mm) 0.120 in (3.048 mm) 0.188 in (4.775 mm) 0.203 in (5.156 mm) 0.276 in (7.010 mm) 0.300 in (7.620 mm) 0.344 in (8.738 mm) 0.552 in (14.021 mm)
    3 80 3.500 in (88.90 mm) 0.083 in (2.108 mm) 0.120 in (3.048 mm) 0.188 in (4.775 mm) 0.216 in (5.486 mm) 0.300 in (7.620 mm) 0.350 in (8.890 mm) 0.438 in (11.13 mm) 0.600 in (15.240 mm)
    90 4.000 in (101.60 mm) 0.083 in (2.108 mm) 0.120 in (3.048 mm) 0.188 in (4.775 mm) 0.226 in (5.740 mm) 0.318 in (8.077 mm) --- --- 0.636 in (16.154 mm)

    Nominal Pipe Size 4 to Nominal Pipe Size 9
    NPS DN
    mm
    OD
    inches (mm)
    Wall thickness
    inches (mm)
    SCH 5 SCH 10 SCH 20 SCH 30 SCH 40/STD SCH 60 SCH 80 SCH 100 SCH 120 SCH 140 SCH 160
    4 100 4.500 in (114.30 mm) 0.083 in (2.108 mm) 0.120
    in
    (3.
    048 mm)
    --- 0.188
    in
    (4.
    775 mm)
    0.237 in (6.02 mm) 0.281
    in (7.137 mm)
    0.337 in (8.560 mm) --- 0.437
    in (11.13 mm)
    --- 0.531
    in (13.49 mm)
    115 5.000 in (127.00 mm) --- --- --- --- 0.247 in (6.274 mm) --- 0.355 in (9.017 mm) --- --- --- ---
    5 125 5.563 in (141.30 mm) 0.109 in (2.769 mm) 0.134
    in
    (3.404 mm)
    --- --- 0.258 in (6.553 mm) --- 0.375 in (9.525 mm) --- 0.500
    in (12.70 mm)
    --- 0.625 
    in (15.875 mm)
    6 150 6.625 in (168.27 mm) 0.109 in (2.769 mm) 0.134
    in (3.404 mm)
    --- --- 0.280 in (7.112 mm) --- 0.432 in (10.973 mm) --- 0.562
    in (14.27 mm)
    --- 0.719
    in (18.263 mm)
    8 200 8.625 in (219.08 mm) 0.109 in (2.769 mm) 0.148
    in (3.759 mm)
    0.250 
    in
    (6.
    35 mm)
    0.277
    in
    (7.
    036 mm)
    0.322 in (8.179 mm) 0.406
    in
    (10.
    312 mm)
    0.500 in (12.70 mm) 0.593
    in
    (15.
    09 mm)
    0.718
    in (18.2 6mm)
    0.812
    in
    (20.
    62mm)
    0.906
    in (23.01 mm)


    Nominal Pipe Size 10 to Nominal Pipe Size 24
    Nominal Pipe Size DN
    mm
    OD
    inches (mm)
    Wall Thickness
    inches (mm)
    SCH 5s SCH 5 SCH 10s SCH 10 SCH 20 SCH 30
    10 250 10.75 in (273.05 mm) 0.134 in (3.404 mm) 0.134 in (3.404 mm) 0.165 in (4.191 mm) 0.165 in (4.191 mm) 0.250 in (6.350 mm) 0.307 in (7.798 mm)
    12 300 12.75 in (323.85 mm) 0.156 in (3.962 mm) 0.165 in (4.191 mm) 0.180 in (4.572 mm) 0.180 in (4.572 mm) 0.250 in (6.350 mm) 0.330 in (8.382 mm)
    14 350 14.00 in (355.60 mm) 0.156 in (3.962 mm) 0.156 in (3.962 mm) 0.188 in (4.775 mm) 0.250 in (6.350 mm) 0.312 in (7.925 mm) 0.375 in (9.525 mm)
    16 400 16.00 in (406.40 mm) 0.165 in (4.191 mm) 0.165 in (4.191 mm) 0.188 in (4.775 mm) 0.250 in (6.350 mm) 0.312 in (7.925 mm) 0.375 in (9.525 mm)
    18 450 18.00 in (457.20 mm) 0.165 in (4.191 mm) 0.165 in (4.191 mm) 0.188 in (4.775 mm) 0.250 in (6.350 mm) 0.312 in (7.925 mm) 0.437 in (11.100 mm)
    20 500 20.00 in (508.00 mm) 0.188 in (4.775 mm) 0.188 in (4.775 mm) 0.218 in (5.537 mm) 0.250 in (6.350 mm) 0.375 in (9.525 mm) 0.500 in (12.700 mm)
    24 600 24.00 in (609.60 mm) 0.218 in (5.537 mm) 0.218 in (5.537 mm) 0.250 in (6.350 mm) 0.250 in (6.350 mm) 0.375 in (9.525 mm) 0.562 in (14.275 mm)

    Nominal Pipe Size Wall thickness
    inches (mm)
    SCH 40s SCH 40 SCH 60 SCH 80s SCH 80 SCH 100 SCH 120 SCH 140 SCH 160
    10 0.365 in (9.271 mm) 0.365 in (9.271 mm) 0.500 in (12.700 mm) 0.500 in (12.700 mm) 0.593 in (15.062 mm) 0.718 in (18.237 mm) 0.843 in (21.412 mm) 1.000 in (25.400 mm) 1.125 in (28.575 mm)
    12 0.375 in (9.525 mm) 0.406 in (10.312 mm) 0.500 in (12.700 mm) 0.500 in (12.700 mm) 0.687 in (17.450 mm) 0.843 in (21.412 mm) 1.000 in (25.400 mm) 1.125 in (28.575 mm) 1.312 in (33.325 mm)
    14 0.375 in (9.525 mm) 0.437 in (11.100 mm) 0.593 in (15.062 mm) 0.500 in (12.700 mm) 0.750 in (19.050 mm) 0.937 in (23.800 mm) 1.093 in (27.762 mm) 1.250 in (31.750 mm) 1.406 in (35.712 mm)
    16 0.375 in (9.525 mm) 0.500 in (12.700 mm) 0.656 in (16.662 mm) 0.500 in (12.700 mm) 0.843 in (21.412 mm) 1.031 in (26.187 mm) 1.218 in (30.937 mm) 1.437 in (36.500 mm) 1.593 in (40.462 mm)
    18 0.375 in (9.525 mm) 0.562 in (14.275 mm) 0.750 in (19.050 mm) 0.500 in (12.700 mm) 0.937 in (23.800 mm) 1.156 in (29.362 mm) 1.375 in (34.925 mm) 1.562 in (39.675 mm) 1.781 in (45.237 mm)
    20 0.375 in (9.525 mm) 0.593 in (15.062 mm) 0.812 in (20.625 mm) 0.500 in (12.700 mm) 1.031 in (26.187 mm) 1.280 in (32.512 mm) 1.500 in (38.100 mm) 1.750 in (44.450 mm) 1.968 in (49.987 mm)
    24 0.375 in (9.525 mm) 0.687 in (17.450 mm) 0.968 in (24.587 mm) 0.500 in (12.700 mm) 1.218 in (30.937 mm) 1.531 in (38.887 mm) 1.812 in (46.025 mm) 2.062 in (52.375 mm) 2.343 in (59.512 mm)

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    Main Products:

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    Corrugated Stainless Steel Tubing
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    Polishing Stainless Steel Tubing
    Stainless Steel Aircraft Tube
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    Stainless Steel Instrumentation Tubing
    Stainless Steel Angle Iron Bar
    Stainless Steel Mechanical Tube
    Bright Annealing Stainless Tube
    Heat resistant Stainless Steel
    Stainless Steel Welded Pipe
    Extruded Serrated Finned Tubes Integral Finned Tubes / Extruded Aluminum Finned Tubes
    Brass Alloys Copper Nickel Alloy Integral Low Finned Tubes
    HFW High Frequency Welded Helical Spiral Serrated Finned Tubes
    Corrosion Resistant Stainless Steel
    Corrosion Resistance Stainless Steel

    Stainless Steel Tubing Pipe

    304 Stainless Steel Pipe
    304L Stainless Steel Pipe
    304H Stainless Steel Pipe
    304/304L Stainless Steel Tubing
    309S Stainless Steel Pipe
    310S Stainless Steel Pipe
    316L Stainless Steel Tubing
    316Ti Stainless Steel Tube
    317L Stainless Steel Pipe
    321 321H Stainless Steel
    347 347H Stainless Steel
    904L N08094 Seamless Tubes
    17-4 PH 630 UNS S17400 Stainless Steel
    253MA S30815 Stainless Steel Tube
    S31254 254 SMO Pipe
    S31803 Stainless Steel
    2205 Duplex Pipe Tubing
    S32101 Stainless Steel
    S32304 Stainless Steel
    2507 Super Duplex Pipe
    S32750 Super Duplex Pipe
    S32760 Super Duplex Steel
    1.4462 Stainless Steel Pipe
    ASTM A213 | ASTM A269
    ASTM A312 | ASTM A511
    ASTM A789 | ASTM A790
    ASTM B161 / ASME SB 161 | ASTM B111
    EN 10216-5
    ASTM A789 ASME SA 789 S31803 S32205 S32101 S32750 S32760 S32304 S31500 S31260 Seamless Tubes
    EN 10216-5 1.4462 1.4362 1.4162 1.4410 1.4501 Seamless Tubes
    Nickel Alloy Tubing:

    UNS N08020 Alloy 20 Tubing
    UNS N02200 Alloy 200 Tube
    UNS N02201 Alloy 201 Pipe
    UNS N04400 Monel 400 Tubing
    N06600 Inconel 600 Tube
    N06601 Inconel 601 Tubing
    N06625 Inconel 625 Tubes
    N08800 Incoloy 800 Tube
    N08810 Incoloy 800H Tube
    N08811 Incoloy 800HT Tubing
    UNS N08825 Incoloy 825 Pipe
    ASTM B622 N10276 C276 Tubing
    ASTM B622 N06022 Hastelloy C-22 Alloy Tubes
    C28000 Brass Seamless Tubes C44300 Brass Seamless Tubes
    C68700 Brass Seamless Tubes
    C70600 Copper Nickel Tubes
    C71500 Copper Nickel Tubes
    DIN 2391 Seamless Precision Steel Tubes
    EN 10305-1 E215 E235 E355 Seamless Precision Steel Tube Tubing Tubes
    DIN 2393 St28 St34.2 St37.2 St44.2 St52.3 Welded Precision Steel Tubes
    EN 10305-2 E195 E235 E355 Welded Cold Drawn Precision Steel Tube