Type of material: Cro-mo steel， aluminium (7050）
Surface finish: Anodic treatment
| specification | OD | Roughness | Lenght |
| GS1 | 30~36(mm) | Ra 0.2 (ID/OD) | ~450(mm) |
＊ We provide customization.
＊ The color of the process treatment depends on customer`s need, and welcome to call us.