NMX-B-189
NMX-B-189 (Steel industry - seamless medium - carbon steel boiler and superheater tubes - specifications)· NMX (Mexico) · 2 materials
| Designation | Material group | |
|---|---|---|
| B-189 Grade A-1 | Structural and constructional steels | chevron_right |
| B-189 Grade C | Structural and constructional steels | chevron_right |