NF A 49-645
NF A 49-645 (Steel tubes. Round, square and rectangular steel tubes for ordinary uses, longitudinally pressure welded and cold formed from cold-rolled flat products. Dimensions. Technical delivery conditions)· AFNOR NF (France) · 5 materials
| Designation | Material group | |
|---|---|---|
| TS 30 E | Structural and constructional steels | chevron_right |
| TS 30 ES | Structural and constructional steels | chevron_right |
| TS 30 O | Structural and constructional steels | chevron_right |
| TS 335 D | Structural and constructional steels | chevron_right |
| TS 390 D | Structural and constructional steels | chevron_right |