Low Temperature ASTM A334 Gr.1 Gr.6 Seamless Welded Carbon Steel Tubes
Low Temperature ASTM A334 Gr.1 Gr.6 Seamless Welded Carbon Steel Tubes
Product Description
This specification covers several grades of minimum-wall-thickness, seamless and welded, carbon and alloy-steel tubes intended for use at low temperatures. Some product sizes may not be available under this specification because heavier wall thickness has an adverse affect on low-temperature impact properties.
| Standard | ASTM A334 |
| O.D. | 3.2 - 500 mm |
| W.T. | 0.5 - 30 mm |
| Length | Max 12000 mm |
| Application | Low temperature pressure vessel pipe, heat exchanger pipe, etc. |
| Surface Finish | Oiled |
| Steel grade and chemical composition | |||||||||
| Steel Grade | Chemical composition, % | ||||||||
| C | Si | Mn | P | S | Ni | Mo | Co | Cu | |
| Grade 1 | ≤0.30 | — | 0.40-1.06 | ≤0.025 | ≤0.025 | — | — | — | — |
| Grade 3 | ≤0.19 | 0.18~0.37 | 0.31-0.64 | ≤0.025 | ≤0.025 | 3.18-3.82 | — | — | — |
| Grade 6 | ≤0.30 | 0.10min | 0.29-1.0 | ≤0.025 | ≤0.025 | — | — | — | — |
| Grade 7 | ≤0.19 | 0.13~0.32 | ≤0.90 | ≤0.025 | ≤0.025 | 2.03-2.57 | — | — | — |
| Grade 8 | ≤0.13 | 0.13~0.32 | ≤0.90 | ≤0.025 | ≤0.025 | 8.40-9.60 | — | — | — |
| Grade 9 | ≤0.20 | — | 0.40-1.06 | ≤0.025 | ≤0.025 | 1.60-2.24 | — | — | 0.75-1.25 |
| Grade 11 | ≤0.10 | ≤0.35 | ≤0.60 | ≤0.025 | ≤0.025 | 35.0-37.0 | ≤0.50 | ≤0.50 | — |
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