牌號
|
抗拉強度ób/MPa
|
屈服點ós/MPa
|
斷后伸長率δ5(%)
|
壓扁試驗平板間距H/mm
|
||
鋼管壁厚
|
||||||
≤16m
|
>16~30mm
|
>30mm
|
||||
≥
|
||||||
10
|
335
|
205
|
195
|
185
|
24
|
2/3D
|
20
|
390
|
245
|
235
|
225
|
20
|
2/3D
|
35
|
510
|
305
|
295
|
285
|
17
|
|
45
|
590
|
335
|
325
|
315
|
14
|
|
Q345
|
490
|
325
|
315
|
305
|
21
|
7/8D
|
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