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標(biāo)準(zhǔn) |
牌號 |
抗拉強度(MPA) |
屈服強度(MPA) |
ASTM A106 |
A |
≥330 |
≥205 |
B |
≥415 |
≥240 | |
C |
≥485 |
≥275 |
標(biāo)準(zhǔn) |
牌號 |
化學(xué)成分 | |||||||||
C |
Si |
Mn |
P |
S |
Cr |
Mo |
Cu |
Ni |
V | ||
ASTM A106 |
A |
≤0.25 |
≥0.10 |
0.27~0.93 |
≤0.035 |
≤0.035 |
≤0.40 |
≤0.15 |
≤0.40 |
≤0.40 |
≤0.08 |
B |
≤0.30 |
≥0.10 |
0.29~1.06 |
≤0.035 |
≤0.035 |
≤0.40 |
≤0.15 |
≤0.40 |
≤0.40 |
≤0.08 | |
C |
≤0.35 |
≥0.10 |
0.29~1.06 |
≤0.35 |
≤0.35 |
≤0.40 |
≤0.15 |
≤0.40 |
≤0.40 |
≤0.08 |
鋼管種類 |
外徑(D) |
壁厚(S) | ||
冷拔管 |
外徑 |
允許公差 |
壁厚 |
允許公差 |
>30~50 |
+0.3% |
≤25 |
+10% | |
>50~325 |
+0.8% | |||
熱軋管 |
>6~168 |
+1.0% |
≤25 |
-10%,+12.5% |
|