江阴市正邦制管有限公司
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首页 > GB/T8163
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标准: GB/T8163
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输送流体用无缝钢管/Seamless carbon steel tube for liquid service
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Application:
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石油,天然气输送及其他一般液体的输送/for petrol,gas and other liquid transportation
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Size(mm):
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外径O.D.：4.0～76.0 壁厚 W.T.:0.5～8.0 长度L：max 6000
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机械化学性能 Mechanical Properties(Mpa):
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标准 Standard
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牌号 Grade
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抗拉强度(Mpa) Tensil strength
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屈服强度(Mpa) Yield point
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伸长率(%)
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GB/T8163
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10
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335-475
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≥205
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≥24
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20
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410-550
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≥245
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≥20
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Q345
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490-665
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≥325
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≥21
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标准 Standard
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牌号 Grade
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化学成分 Chemical composition
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C
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Si
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Mn
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P
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S
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Cu
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GB/T8163
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10
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0.07-0.14
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0.07-0.37
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0.35-0.65
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≤0.035
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≤0.035
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≤0.25
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20
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0.17-0.24
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0.17-0.37
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0.35-0.65
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≤0.035
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≤0.035
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≤0.25
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Q345
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0.12-0.20
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0.20-0.55
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1.20-1.60
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≤0.045
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≤0.045
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-
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尺寸精度:
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钢管种类
Way of producing |
外径OD
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壁厚WT
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钢管尺寸Size
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允许偏差Tolerance
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钢管尺寸
(mm) |
允许偏差Tolerance
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普通级
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高级
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普通级
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高级
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热扎管
Hot rolled |
全部All
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±1.0%(最小值为±0.50mm)
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全部All
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15%,﹣12.5%
最小值为+0.45mm,﹣0.40mm |
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冷拔(扎)管
Cold Drawn(rolled) |
6～10
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±0.20mm
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±0.15mm
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≤1
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±0.15mm
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±0.12mm
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>10-30
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±0.40mm
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±0.20mm
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>1-3
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+15%,-10%
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+12.5%,-10%
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>30-50
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±0.45mm
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±0.30mm
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>3
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+12.5%,-10%
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±10%
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>50
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±1%
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±0.8%
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-
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-
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-
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