NF A 49-311
NF A 49-311 (Steel tubes. Seamless tubes for mechanical application. Dimensions. Technical delivery conditions)· AFNOR NF (France) · 4 materials
| Designation | Material group | |
|---|---|---|
| TU 37 b | Structural and constructional steels | chevron_right |
| TU 52 b | Structural and constructional steels | chevron_right |
| TU 56 b | Structural and constructional steels | chevron_right |
| TU XC 35 | Structural and constructional steels | chevron_right |