直缝焊管
详细说明
Product Name | Material | Standard | Specification | Application |
ERW steel pipe | 20# Q195 Q215A,B | GB/T13793-1992 | ∮32-630*1-30 | Apply to structure support, low pressure fluid transport |
Standard | Steel grade | Chemical composition | |||||||||
C | Mn | Si | Cu | Ni | Cr | Mo | V | P | S | ||
ASTMA106/ | A | ≤ 0.25 | 0.27 ～ 0.93 | ≥ 0.10 | ≤ 0.40 | ≤ 0.40 | ≤ 0.40 | ≤ 0.15 | ≤ 0.08 | ≤ 0.035 | ≤ 0.035 |
B | ≤ 0.30 | 0.29 ～ 1.06 | ≥ 0.10 | ≤ 0.40 | ≤ 0.40 | ≤ 0.40 | ≤ 0.15 | ≤ 0.08 | ≤ 0.035 | ≤ 0.035 | |
C | ≤ 0.35 | 0.29 ～ 1.06 | ≥ 0.10 | ≤ 0.40 | ≤ 0.40 | ≤ 0.40 | ≤ 0.15 | ≤ 0.08 | ≤ 0.035 | ≤ 0.035 | |
Mechanical property | Tensile strength (MPa) | Yield strength (MPa) | |||||||||
A | ≥ 330 | ≥ 205 | |||||||||
B | ≥ 415 | ≥ 240 | |||||||||
C | ≥ 485 | ≥ 275 | |||||||||
Note:
①If the carbon content decreasing by 0.01% on the specified maximum carbon content, the manganese content allowed to increase 0.06% on the specified maximum manganese carbon content.
②Cu+Ni+Cr+Mo+V≤1.00
Dimension tolerance:
| OD（D） | Thickness（S） | ||
Cold drawn pipe | OD | Tolerance | TH | Tolerance |
＞30～50 | +0.3% | ≤25 | +10% | |
＞50～325 | +0.8% | |||
Hot rolled pipe | ＞6～168 | +1.0% | ≤25 | -10%，+12.5% |
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