GB/T 20409
GB/T 20409 (Multi-rifled seamless steel tubes for high-pressure boiler)· GB (China) · 9 materials
| Designation | Material group | |
|---|---|---|
| 10Cr9Mo1VNbN | Structural and constructional steels | chevron_right |
| 10Cr9MoW2VNbBN | Structural and constructional steels | chevron_right |
| 12Cr1MoVG | Structural and constructional steels | chevron_right |
| 12Cr2MoG | Structural and constructional steels | chevron_right |
| 12CrMoG | Structural and constructional steels | chevron_right |
| 15CrMoG | Structural and constructional steels | chevron_right |
| 20G | Structural and constructional steels | chevron_right |
| 20MnG | Structural and constructional steels | chevron_right |
| 25MnG | Structural and constructional steels | chevron_right |