石油管天然气用管线无缝钢管
作者:万钢 来源:万钢之源 发布时间:2018-09-21 11:16 浏览量:
石油管天然气用管线无缝钢管
标准: |
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API SPEC 5L——美国石油学会标准 |
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GB/T9711.2——中国国家标准 |
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用途: |
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用于石油、天然气工业中的氧、水、油输送无缝钢管,以及海底石油管线用管 |
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主要生产钢管牌号: |
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B、X42、X52、X60、X65、X70、 L245、 L290 、L360、 L415 |
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尺寸公差: |
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钢管种类 |
钢管外径(D) |
钢管壁厚(S) |
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管体 |
钢管外径 (mm) |
允许偏差(mm) |
钢管外径(mm) |
允许偏差(mm) |
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≥60.3且S<20 |
±0.75% |
≤73.0 |
+15%,-12.5% |
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≥60.3且S≥20 |
±1.00% |
>73.0且S<20 |
+15%,-12.5% |
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>73.0且S≥20 |
+17.5%,-10 |
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力学性能: |
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标准 |
牌号 |
抗拉强度(MPa) |
屈服强度(MPa) |
屈强比 |
伸长率(%) |
0℃冲击功 |
热处理状态 |
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Akv(J) |
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API SPEC 5L |
B |
≥415 |
245~440 |
≤0.80 |
22 |
≥40 |
正火 |
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GB/T9711.2 |
X42 |
≥415 |
290~440 |
≤0.80 |
21 |
≥40 |
正火 |
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X52 |
≥460 |
360~510 |
≤0.85 |
20 |
≥40 |
正火 |
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X60 |
≥520 |
415~565 |
≤0.85 |
18 |
≥40 |
正火 |
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X65 |
≥535 |
450~570 |
≤0.90 |
18 |
≥40 |
淬火+回火 |
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X70 |
≥570 |
485~605 |
≤0.90 |
18 |
≥40 |
淬火+回火 |
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化学成分: |
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标准 |
牌号 |
化学成分(%) |
CEV(%) |
C |
Si |
Mn |
P |
S |
V |
Nb |
Ti |
API SPEC 5L |
B |
≤0.16 |
≤0.40 |
≤1.10 |
≤0.020 |
≤0.010 |
- |
- |
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≤0.42 |
GB/T9711.2 |
X42 |
≤0.17 |
≤0.40 |
≤1.20 |
≤0.020 |
≤0.010 |
≤0.05 |
≤0.05 |
≤0.04 |
≤0.42 |
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X52 |
≤0.20 |
≤0.45 |
≤1.60 |
≤0.020 |
≤0.010 |
≤0.10 |
≤0.05 |
≤0.04 |
≤0.45 |
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X60 |
≤0.21 |
≤0.45 |
≤1.60 |
≤0.020 |
≤0.010 |
≤0.15 |
≤0.05 |
≤0.04 |
协议 |
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X65 |
≤0.16 |
≤0.45 |
≤1.60 |
≤0.020 |
≤0.010 |
≤0.06 |
≤0.05 |
≤0.06 |
≤0.45 |
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X70 |
≤0.16 |
≤0.45 |
≤1.70 |
≤0.020 |
≤0.010 |
≤0.06 |
≤0.05 |
≤0.06 |
≤0.45 |
注: |
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1.0.015%≤Altot<0.06%;N≤0.012%;Al/N≥2/1;Cu≤0.25%;Ni≤0.30%;Cr≤0.30%;Mo≤0.10% |
2.V+Nb+Ti≤0.15 |
3.X60、X65、X70经协商Mo≤0.35% |
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