NMX-B-137
NMX-B-137 (Electric resistance welded carbon steel and carbon manganese pipes for boilers)· NMX (Mexico) · 3 materials
| Designation | Material group | |
|---|---|---|
| B 137 Grade A | Structural and constructional steels | chevron_right |
| B-137 Grade C | Structural and constructional steels | chevron_right |
| B-137 Grade D | Structural and constructional steels | chevron_right |