GB 4358
GB 4358 (琴钢丝)· GB (中国) · 18 种材料
| 名称 | 材料组别 | |
|---|---|---|
| 60 | 结构钢 | chevron_right |
| 60Mn | 结构钢 | chevron_right |
| 65 | 结构钢 | chevron_right |
| 65Mn | 结构钢 | chevron_right |
| 70 | 结构钢 | chevron_right |
| 70Mn | 结构钢 | chevron_right |
| 75 | 结构钢 | chevron_right |
| 80 | 结构钢 | chevron_right |
| T8MnA | 工具钢 | chevron_right |
| T9A | 工具钢 | chevron_right |
| U20602 | 结构钢 | chevron_right |
| U20652 | 结构钢 | chevron_right |
| U20702 | 结构钢 | chevron_right |
| U20752 | 结构钢 | chevron_right |
| U20802 | 结构钢 | chevron_right |
| U21602 | 结构钢 | chevron_right |
| U21652 | 结构钢 | chevron_right |
| U21702 | 结构钢 | chevron_right |