Galvanized steel covers for water collection pits are made by crossing flat steel bars at a certain spacing with crossbars, welded into a steel product featuring square grid patterns in the middle. They are primarily used for drain covers, steel structure platform panels, and stair tread panels. The crossbars are typically made of twisted square steel.

Grating panels are generally made ofQ235Low-carbon steel construction with hot-dipped galvanized finish for oxidation prevention. Stainless steel options are also available. The grate panels feature ventilation, lighting, heat dissipation, anti-slip, and explosion-proof properties.

Manufacturing methods of grille panels: machine welding and handcrafted.Machine Resistance Welding with High-Voltage Resistance Welding Machine,The robotic arm automatically places the crossbar horizontally on the evenly arranged flat steel bars.,The cross bar is welded into the flat steel by means of powerful electric welding power and hydraulic pressure.,Thus, we achieve a robust焊点.,High-quality grating panels with stability and strength. Handcrafted grating panels are first perforated on flat steel, followed by the insertion of crossbars which are spot-welded into the holes, leaving gaps between the crossbars and the flat steel.,And it's not feasible to weld at every contact point, hence the welds are not secure.