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鋼管種類 |
外徑(D) |
鋼管壁厚(S) | ||
冷拔管 |
鋼管外徑(mm) |
允許偏差(mm) |
鋼管壁厚(mm) |
允許偏差(mm) |
>30~50 |
±0.3 |
≤30 |
±10% | |
>50~219 |
±0.8% | |||
熱軋管 |
>219 |
±1.0% |
>20 |
±10% |
標準 |
牌號 |
抗拉強度(MPa) |
屈服強度(MPa) |
伸長率(%) |
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 |
標準 |
牌號 |
化學成分(%) | |||||||||
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 |
|