| Size | Customized |
| Product name | HDG Hot dipped galvanized steel stringer for steel staircase |
| Material | Carbon steel |
| Grade | SS400,S235JR,A36,Q235B Q345B Q460 45# |
| Certification: | ISO quality system, Chinese GB50221-2001 |
| Types of steel staircases | Straight stairs,spiral stairs,curved stairs,fire escape stairs,access stairs,stainless stairs,Dog let stairs,U shape stairs |
| Welding Technology: | Single level butt welding, fillet welding by electric arc welding, and Gas shielded welding. |
| Welding Testing | Ultrasonic Testing, X-ray Testing |
| Packing | Wooden case,steel pallet or other seaworthy package |
| Inspection | 100% dimension inspection and visual inspection,,gas tight test before delivery. |
| Manufacturing Technology | Drilling, Cutting, Assembling, Welding, Rectification, Testing etc |
| Application | Indoor and outdoor |
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