GB/T 33975
GB/T 33975 (Hot-rolled spring steel wire rod for high-speed railway fastener)· GB (China) · 3 materials
| Designation | Material group | |
|---|---|---|
| 38Si2Mn | Structural and constructional steels | chevron_right |
| 60Si2Cr | Structural and constructional steels | chevron_right |
| 60Si2Mn | Structural and constructional steels | chevron_right |