GB/T 30829
GB/T 30829 (Tubes sans soudure en acier ronds et profilés pour derrick)· GB (Chine) · 16 matériaux
| Désignation | Groupe de matériaux | |
|---|---|---|
| J20CrMo Grade I | Aciers de construction | chevron_right |
| J20CrMo Grade II | Aciers de construction | chevron_right |
| JQ245 Grade B | Aciers de construction | chevron_right |
| JQ245 Grade C | Aciers de construction | chevron_right |
| JQ245 Grade D | Aciers de construction | chevron_right |
| JQ245 Grade E | Aciers de construction | chevron_right |
| JQ345 Grade B | Aciers de construction | chevron_right |
| JQ345 Grade C | Aciers de construction | chevron_right |
| JQ345 Grade D | Aciers de construction | chevron_right |
| JQ345 Grade E | Aciers de construction | chevron_right |
| JQ450 Grade C | Aciers de construction | chevron_right |
| JQ450 Grade D | Aciers de construction | chevron_right |
| JQ450 Grade E | Aciers de construction | chevron_right |
| JQ500 Grade C | Aciers de construction | chevron_right |
| JQ500 Grade D | Aciers de construction | chevron_right |
| JQ500 Grade E | Aciers de construction | chevron_right |