NBR 6321
NBR 6321 (Standard specification for seamless carbon steel pipe for high temperatures services)· NBR (Brazil) · 3 materials
| Designation | Material group | |
|---|---|---|
| NBR 6321 Grade A | Structural and constructional steels | chevron_right |
| NBR 6321 Grade B | Structural and constructional steels | chevron_right |
| NBR 6321 Grade C | Structural and constructional steels | chevron_right |