IS 4270
IS 4270 (水井用钢管 - 规范)· IS (印度) · 8 种材料
| 名称 | 材料组别 | |
|---|---|---|
| EFW 410 | 结构钢 | chevron_right |
| EFW 450 | 结构钢 | chevron_right |
| ERW 410 | 结构钢 | chevron_right |
| ERW 450 | 结构钢 | chevron_right |
| HFIW 410 | 结构钢 | chevron_right |
| HFIW 450 | 结构钢 | chevron_right |
| HFS 410 | 结构钢 | chevron_right |
| HFS 450 | 结构钢 | chevron_right |