ISO 3304
ISO 3304 (Plain end seamless precision steel tubes - Technical conditions for delivery)· ISO (International) · 5 materials
| Designation | Material group | |
|---|---|---|
| R28 | Structural and constructional steels | chevron_right |
| R33 | Structural and constructional steels | chevron_right |
| R37 | Structural and constructional steels | chevron_right |
| R44 | Structural and constructional steels | chevron_right |
| R50 | Structural and constructional steels | chevron_right |