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|
钢管种类 |
外径（D） |
钢管壁厚（S） | ||
|
冷拔管 |
钢管外径(mm) |
允许偏差(mm) |
钢管壁厚(mm) |
允许偏差(mm) |
|
＞30～50 |
±0.3 |
≤30 |
±10％ | |
|
＞50～219 |
±0.8％ | |||
|
热轧管 |
＞219 |
±1.0％ |
＞20 |
±10％ |
|
标准 |
牌号 |
抗拉强度（MPa） |
屈服强度（MPa） |
伸长率（％） |
|
GB/T8162 |
10 |
≥335 |
≥205 |
≥24 |
|
20 |
≥390 |
≥245 |
≥20 | |
|
35 |
≥510 |
≥305 |
≥17 | |
|
45 |
≥590 |
≥335 |
≥14 | |
|
Q345 |
≥490 |
≥325 |
≥21 | |
|
15CrMo |
≥440 |
≥295 |
≥22 | |
|
12Cr1MoV |
≥490 |
≥245 |
≥22 | |
|
ASTM A53
ASME SA53 |
A |
≥330 |
≥205 |
查看ASTM A53的表
查看ASME SA53的表 |
|
B |
≥415 |
≥240 |
|
标准 |
牌号 |
化学成分（％） | |||||||||
|
C |
Si |
Mn |
P |
S |
Cu |
Ni |
Mo |
Cr |
V | ||
|
GB/T8162 |
10 |
0.07～0.14 |
0.17～0.37 |
0.35～0.65 |
≤0.035 |
≤0.035 |
≤0.25 |
≤0.25 |
/ |
≤0.15 |
/ |
|
20 |
0.17～0.24 |
0.17～0.37 |
0.35～0.65 |
≤0.035 |
≤0.035 |
≤0.25 |
≤0.25 |
/ |
≤0.25 |
/ | |
|
35 |
0.32～0.40 |
0.17～0.37 |
0.50～0.80 |
≤0.035 |
≤0.035 |
≤0.25 |
≤0.25 |
/ |
≤0.25 |
/ | |
|
45 |
0.42～0.50 |
0.17～0.37 |
0.50～0.80 |
≤0.035 |
≤0.035 |
≤0.25 |
≤0.25 |
/ |
≤0.25 |
/ | |
|
Q345 |
0.12～0.20 |
0.20～0.55 |
1.20～1.60 |
≤0.035 |
≤0.035 |
≤0.25 |
≤0.25 |
/ |
≤0.25 |
/ | |
|
15CrMo |
0.12～0.18 |
0.17～0.37 |
0.40～0.70 |
≤0.035 |
≤0.035 |
≤0.25 |
≤0.30 |
0.40～0.55 |
0.80～1.10 |
/ | |
|
12Cr1MoV |
0.08～0.15 |
0.17～0.37 |
0.40～0.70 |
≤0.035 |
≤0.035 |
≤0.25 |
≤0.30 |
0.25～0.35 |
0.90～1.20 |
0.15～0.30 | |
|
ASTMA53
ASMESA53 |
A |
≤0.25 |
/ |
≤0.95 |
≤0.05 |
≤0.06 |
≤0.40 |
≤0.40 |
≤0.15 |
≤0.40 |
≤0.08 |
|
B |
≤0.30 |
/ |
≤1.20 |
≤0.05 |
≤0.06 |
≤0.40 |
≤0.40 |
≤0.15 |
≤0.40 |
≤0.08 | |
| ||
