Steel grating is in accordance with a predetermined pitch and crossbar (twisted square steel, round, flat, etc.) staggered flat steel, and welded into the middle of a steelworks with a square lattice, steel grating main used for drain cover, steel platform board, ladders stepping board. After crossbar commonly used twisted square steel. Steel grating commonly used carbon steel, hot dip galvanized appearance, can play a role in preventing oxidation. It may also be made of stainless steel. Steel grating with ventilation, lighting, cooling, slip-proof properties. Steel grating surface treatment galvanized, cold galvanizing, plating, painting, anti-rust oil dip, dip, do not handle. Steel grating production methods ?? bonding steel grating is the load flat steel and bars with certain distances, using 200 tons of hydraulic resistance welding automation equipment welded into the original plate, after cutting, opening, edging and other processes processing from customer requirements. Loaded flat pitch: two adjacent bearing bars by the center distance, common 30MM, 40MM two kinds. Bar spacing: distance between two adjacent intermediate rail is usually 50MM, 100, are two, according to customer requirements. Compared with the tread plate and other grille, steel grating has the following advantages: 1. Save material: bearing the same way most provinces material loading conditions and, accordingly, can reduce material support structure. 2. Reduce investment: saving materials, the provincial labor, the provincial period, free cleaning and maintenance. 3. Construction is simple: in the pre-installed on the support clamp bolt or weld fixation, one person to complete. 4. Save period: Products without on-site reprocessing, installation is very quick. 5. Durable: factory corrosion by hot dip galvanizing process, impact resistance and weight capability. 6. Modern style: beautiful shape, design specifications, air and light, giving the overall sleek, contemporary feel. 7. light structure: a small timber structure light and easy lifting. 8. against product contamination: no accumulation of rain, snow and dust. 9. reduce wind resistance: Due to good ventilation, windy wind resistance and reduce wind damage. 10. The design is simple: no small support beam, simple structure, simplified design; no detail design of steel lattice panels, can only indicate the model, the factory and customers can design discharge plate Fig. 11. The ventilation, lighting, cooling, explosion, skid resistance good: acid corrosion: in PH6 to within PH12.5 range, zinc layer surface to form a stable protective film, good corrosion resistance.