Stainless steel seamless pipe, also known as stainless steel seamless tube, is a long hollow cylinder used for moving fluids (liquids or gases).
“Stainless seamless pipe” and “stainless steel tube” are almost interchangeable, although minor distinctions exist-generally, a tube has tighter engineering requirements than a pipe.
XINHANG STEEL is a professional manufacturer specialized in manufacturing seamless pipes in large, medium, and small diameters.
Various stainless steel seamless pipe are produced with complete specifications and supreme quality.
Stainless steel seamless pipe are widely used in such industries as petroleum, chemical industry, machinery, electric power, chemical fiber, papermaking, printing and dyeing, food and pneumatic parts etc.
The company is provided with complete inspection equipment and adopts technical standards for products such as: seamless pipe for fluid transportation, seamless pipe for construction, seamless for boiler and heat exchanger.
The outside diameter of seamless stainless we produce ranges from 6mm to 406.4mm. The wall thickness is 1mm to 50mm.Our factory and products are certified by ISO 9001,PED,TUV,LR,KR,ABS,BV AND DNV/GL.
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Specification |
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| Size | OD: 6 ~ 406.4mm; WT: 1 ~ 50mm;OD:1/8”-16”;WT:SCH10(S)-XXS
Length:5.8m, 6m, 6.096m,11.8m, as requirement Max.11.8m
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| Process | Seamless, Cold Drawn, Cold Rolled |
| End | PE(Plain End), BE(Beveled End), NPT, BW(Butt Weld End) |
| Surface | Aid Pickling, Polishing(180#, 220#, 240#, 320#, 400#) |
| Theoretical Weight(kg/m) | Weight/meter = (OD-WT)*WT*0.02507(0.02491) Both OD and WT in mm. |
Note:
OD is the specified outside diameter.
WT is the specified wall thickness
Stainless steel pipes shall be pickled free of scale. When bright annealing is used, pickling is not necessary.
Main Grades
| Austenitic/Super Austenitic Stainless Steel Seamless Pipe | TP304,TP304H, TP304L, TP321, TP321H, TP316L, TP316Ti, TP317L, TP310S, TP310H, TP347H, 904L, |
Production Standard
| ASTM | ASTM A213/213M(ASME SA213/SA213M), ASTM A312/312M(ASME SA312/SA312M), ASTM A511,ASTM A269, |
| DIN | DIN 17456, DIN17458 |
| EN | EN10216-5 |
| JIS | JIS G3459, JIS G3463 |
Tolerances in Wall Thickness (ASTM A312)
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NPS Designator |
Tolerance, % from Nominal |
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Over |
Under |
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1/8 to 2-1/2 incl., all t/D ratios |
20.0 |
12.5 |
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3 to 18 inch., t/D up to 5% incl. |
22.5 |
12.5 |
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3 to 18 inch., t/D＞5% |
15.0 |
12.5 |
Note:
t = Nominal Wall Thickness;
D = Ordered Outside Diameter.
Tolerances in Outside Diameter (ASTM A312)
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NPS Designator |
Tolerances in Outside Diameter |
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Over |
Under |
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In. |
mm |
In. |
mm |
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1/8 to 1-1/2, incl. |
1/64 (0.015) |
0.4 |
1/32 (0.031) |
0.8 |
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Over 1-1/2 to 4, incl. |
1/32 (0.031) |
0.8 |
1/32 (0.031) |
0.8 |
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Over 4 to 8, incl. |
1/16 (0.062) |
1.6 |
1/32 (0.031) |
0.8 |
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Over 8 to 18, incl. |
3/32 (0.093) |
2.4 |
1/32 (0.031) |
0.8 |
Tolerances in Straightness (ASTM A312)
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Specified OD, in. |
Specified Wall Thickness, in. |
Maximum Curvature in any 3ft, in. |
Maximum Curvature i Total Length, in. |
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Up to 5.0 incl. |
Over 3% OD to 0.5, incl. |
0.030 |
0.010 x length, ft |
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Over 5.0 to 8.0, incl. |
Over 4% OD to 0.75, incl. |
0.045 |
0.015 x length, ft |
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Over 8.0 to 12.75, incl. |
Over 4% OD to 1.0, incl. |
0.060 |
0.020 x length, ft |
Packing Information
BUNDLE PACKAGE
WOODEN CASE
PLASTIC PACKAGE.
