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  | 
 牌號  | 
 抗拉強(qiáng)度ób/MPa  | 
 屈服點(diǎn)ós/MPa  | 
 斷后伸長率δ5(%)  | 
 壓扁試驗(yàn) 
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  | 
						
  | ||