D ISO 9330-1
D ISO 9330-1 (Welded steel tubes for pressure purposes - Technical delivery conditions - Part 1：Unalloyed steel tubes with specified room temperature properties)· KS (Korea) · 5 materials
| Designation | Material group | |
|---|---|---|
| TW 320 | Structural and constructional steels | chevron_right |
| TW 360 | Structural and constructional steels | chevron_right |
| TW 410 | Structural and constructional steels | chevron_right |
| TW 430 | Structural and constructional steels | chevron_right |
| TW 500 | Structural and constructional steels | chevron_right |