| Variety | Specification | Steel grade/steel grade | Executive standard | USE | |
| Outer diameter（mm） | Wall thickness（mm） | ||||
| Machined seamless steel pipe | 38～356 | 3.5～40 | 20#，45#，Q345，Q235 | GB/T—2008 | Manufacturing structural members |
Note: According to the needs of users, products that meet the individual requirements of users can be designed and produced.
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