聊城市万源鑫钢管有限公司
电 话:0635-2993055、2990355
传 真:0635-2990355
手 机:15954939199、13806353519、13884836049
Q Q:313235527
邮 箱:lczzgy@163.com
联系人:马经理
网 址:www.hub168.com
地 址:山东聊城大东钢管城
钢管种类 |
钢管外径(D) |
钢管壁厚(S) | ||
管体 |
钢管外径 (mm) |
允许偏差(mm) |
钢管外径(mm) |
允许偏差(mm) |
≥60.3且S<20 |
±0.75% |
≤73.0 |
+15%,-12.5% | |
≥60.3且S≥20 |
±1.00% |
>73.0且S<20 |
+15%,-12.5% | |
>73.0且S≥20 |
+17.5%,-10 |
标准 |
牌号 |
抗拉强度(MPa) |
屈服强度(MPa) |
屈强比 |
伸长率(%) |
0℃冲击功
Akv(J) |
热处理状态 |
API SPEC 5L
GB/T9711.2 |
B |
≥415 |
245~440 |
≤0.80 |
22 |
≥40 |
正火 |
X42 |
≥415 |
290~440 |
≤0.80 |
21 |
≥40 |
正火 | |
X52 |
≥460 |
360~510 |
≤0.85 |
20 |
≥40 |
正火 | |
X60 |
≥520 |
415~565 |
≤0.85 |
18 |
≥40 |
正火 | |
X65 |
≥535 |
450~570 |
≤0.90 |
18 |
≥40 |
淬火+回火 | |
X70 |
≥570 |
485~605 |
≤0.90 |
18 |
≥40 |
淬火+回火 |
标准 |
牌号 |
化学成分(%) |
CEV(%) | |||||||
C |
Si |
Mn |
P |
S |
V |
Nb |
Ti | |||
API SPEC 5L
GB/T9711.2 |
B |
≤0.16 |
≤0.40 |
≤1.10 |
≤0.020 |
≤0.010 |
- |
- |
- |
≤0.42 |
X42 |
≤0.17 |
≤0.40 |
≤1.20 |
≤0.020 |
≤0.010 |
≤0.05 |
≤0.05 |
≤0.04 |
≤0.42 | |
X52 |
≤0.20 |
≤0.45 |
≤1.60 |
≤0.020 |
≤0.010 |
≤0.10 |
≤0.05 |
≤0.04 |
≤0.45 | |
X60 |
≤0.21 |
≤0.45 |
≤1.60 |
≤0.020 |
≤0.010 |
≤0.15 |
≤0.05 |
≤0.04 |
协议 | |
X65 |
≤0.16 |
≤0.45 |
≤1.60 |
≤0.020 |
≤0.010 |
≤0.06 |
≤0.05 |
≤0.06 |
≤0.45 | |
X70 |
≤0.16 |
≤0.45 |
≤1.70 |
≤0.020 |
≤0.010 |
≤0.06 |
≤0.05 |
≤0.06 |
≤0.45 |