|
钢管牌号和化学成份 | |||||
|
牌号 |
化学成分(%) | ||||
|
C |
Si |
Mn |
P |
S | |
|
不大于 | |||||
|
St35 |
≤0.18 |
0.17-0.37 |
0.35-0.65 |
0.035 |
0.035 |
|
St37.4(10#) |
≤0.18 |
0.17-0.37 |
0.35-0.65 |
0.035 |
0.035 |
|
St45(20#) |
≤0.25 |
0.17-0.37 |
0.50-0.80 |
0.035 |
0.035 |
|
St55(35#) |
≤0.22 |
≤0.55 |
≤1.50 |
0.035 |
0.035 |
|
St52(16Mn) |
≤0.20 |
≤0.55 |
≤1.50 |
0.035 |
0.035 |
|
CK45 |
0.42-0.50 |
0.17-0.37 |
0.50-0.80 |
0.035 |
0.035 |
