YB/T 4202
YB/T 4202 (建筑脚手架用焊接钢管)· YB (中国) · 10 种材料
| 名称 | 材料组别 | |
|---|---|---|
| Q235A | 结构钢 | chevron_right |
| Q235B | 结构钢 | chevron_right |
| Q275A | 结构钢 | chevron_right |
| Q275B | 结构钢 | chevron_right |
| Q295A | 结构钢 | chevron_right |
| Q295B | 结构钢 | chevron_right |
| Q345A | 结构钢 | chevron_right |
| Q345B | 结构钢 | chevron_right |
| Q390A | 结构钢 | chevron_right |
| Q390B | 结构钢 | chevron_right |