SEAMLESS AND WELDED AUSTENITIC STAINLESS STEEL SANITARY TUBING
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Standard: ASTM A270 Material: 304, 304L, 316, 316L OD: 15.9~168.3mm WT: 0.89, 0.90, 1.00, 1.07, 1.20, 1.24, 1.50, 1.60, 1.65, 2.00, 2.11, 2.77, 3.05mm Welding method: TIG or TIG + Plasma Heat Treatment: 1040°C Water Quenching Stencil: VASTAR, A 270, Grade, OD WT Length, Heat number, Surface finish. Inspection items: Chemical Composition; Size; Reverse Flattening Test; Hydrostatic Test or Eddy current test; Surface quality; etc. Application: Food & Dairy industry. |
Size Tolerance
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ASTM A270 Tolerance |
OD Tolerance |
WT Tolerance |
Length Tolerance |
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OD |
Tolerance |
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OD |
Tolerance |
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≦ |
± |
±12.5% |
≦ |
+ |
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+ |
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Chemical Composition
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ASTM A270 Chemical Composition % |
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Grade |
C |
Si |
Mn |
P |
S |
Ni |
Cr |
Mo |
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304 |
≦0.08 |
≦1.00 |
≦2.00 |
≦0.045 |
≦0.03 |
8.00~11.00 |
18.00~20.00 |
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|
|
≦0.035 |
≦1.00 |
≦2.00 |
≦0.045 |
≦0.03 |
8.00~11.00 |
18.00~20.00 |
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316 |
≦0.08 |
≦1.00 |
≦2.00 |
≦0.045 |
≦0.03 |
10.00~14.00 |
16.00~18.00 |
2.00~3.00 |
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|
≦0.035 |
≦1.00 |
≦2.00 |
≦0.045 |
≦0.03 |
10.00~15.00 |
16.00~18.00 |
2.00~3.00 |