Manufacturing Process Of Steel Grating Gully Cover

For procurement teams evaluating suppliers, understanding the manufacturing process is key to verifying quality.

Step-by-Step Production Process

1. Material preparation – Mild steel bearing bars (ASTM A36 or ASTM A1011) and cross bars (twisted square or round) are selected

2. Resistance welding – Bearing bars and cross bars are welded under pressure using computer-controlled equipment, ensuring consistent fusion and full contact at every intersection

3. Serration milling – Optional serrated surface created for anti-slip requirements

4. Cutting and banding – Panels cut to specified dimensions; edges banded for strength and safety

5. Surface treatment – Hot-dip galvanizing, electro-galvanizing, or painting applied

6. Final quality control – Load/deflection testing, coating thickness checks, dimensional tolerance verification