| Standard | AiSi | 
|---|---|
| Grade | Steel | 
| Type | Heavy, Light Steel Structure Frame | 
| Application | Steel Structure Bridge | 
| Tolerance | ±1% | 
| Standard | AiSi | 
|---|---|
| Grade | Q235/Q345B | 
| Type | Light, Light Steel Structure Frame | 
| Application | Steel Workshop, Storage Warehouse Structure Building | 
| Tolerance | ±1% |