| Variety | Specification | Steel grade/steel grade | Executive standard | USE | |
| Outer diameter（mm） | Wall thickness（mm） | ||||
| Seamless steel pipe for structure | 32～350 | 3.5～40 | 20#，45#，Q345 | GB/T 8162 | Machining, mechanical parts, pipe fittings |
Note: According to the needs of users, products that meet the individual requirements of users can be designed and produced.
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