GOST 6238
GOST 6238 (Casing and coring pipes for geology-exploring drilling and nipples for them. Specifications)· GOST (Russia) · 3 materials
| Designation | Alternative designation | Material group | |
|---|---|---|---|
| D | Д | Structural and constructional steels | chevron_right |
| Grade K | К | Structural and constructional steels | chevron_right |
| Grade M | М | Structural and constructional steels | chevron_right |