GB/T 9711
GB/T 9711 (石油天然气工业 管线输送系统用钢管)· GB (中国) · 18 种材料
| 名称 | 材料组别 | |
|---|---|---|
| L245MH/BMH | 结构钢 | chevron_right |
| L245NH/BH | 结构钢 | chevron_right |
| L245NH/BNH | 结构钢 | chevron_right |
| L245QH/BQH | 结构钢 | chevron_right |
| L290MH/X42MH | 结构钢 | chevron_right |
| L290NH/X42NH | 结构钢 | chevron_right |
| L290QH/X42QH | 结构钢 | chevron_right |
| L320MH/X46MH | 结构钢 | chevron_right |
| L320NH/X46NH | 结构钢 | chevron_right |
| L320QH/X46QH | 结构钢 | chevron_right |
| L360MH/X52MH | 结构钢 | chevron_right |
| L360NH/X52NH | 结构钢 | chevron_right |
| L360QH/X52QH | 结构钢 | chevron_right |
| L450/X65 | 结构钢 | chevron_right |
| L485/X70 | 结构钢 | chevron_right |
| L555/X80 | 结构钢 | chevron_right |
| L625/X90 | 结构钢 | chevron_right |
| L690/X100 | 结构钢 | chevron_right |