GOST 633
GOST 633 (Tubing pipes and couplings for them. Specifications)· GOST (Russia) · 6 materials
| Designation | Alternative designation | Material group | |
|---|---|---|---|
| D | Д | Structural and constructional steels | chevron_right |
| E | Е | Structural and constructional steels | chevron_right |
| Grade K | К | Structural and constructional steels | chevron_right |
| Grade L | Л | Structural and constructional steels | chevron_right |
| Grade M | М | Structural and constructional steels | chevron_right |
| Grade R | Р | Structural and constructional steels | chevron_right |