The walkway grating for a wastewater treatment plant is a type of steel product formed by crossing flat steel bars at specific intervals with horizontal bars, welded together to create a grid pattern with square cells. It is primarily used for drain covers, steel structural platforms, and stair tread plates. The horizontal bars typically use twisted square steel.

Grating panels are generally made of low-carbon steel Q235, with a hot-dipped galvanized finish to prevent oxidation. Stainless steel can also be used. Grating panels offer ventilation, lighting, heat dissipation, anti-slip, and explosion-proof properties.

Manufacturing methods of grill plates: two types, machine press welding and handcrafted. Machine press welding utilizes a high-voltage resistance welding machine, with a robotic arm automatically placing the crossbars across uniformly arranged flat steel strips. The powerful welding power and hydraulic pressure then weld the crossbars into the flat steel, resulting in high-quality grill plates with solid weld points, excellent stability, and strength. Handcrafted grill plates are initially pierced with holes in the flat steel, followed by inserting the crossbars and spot welding them in place. There will be gaps between the crossbars and flat steel, and it's impossible to weld at every contact point, leading to unreliable welding.

Flat Steel: Material includes Q235 or stainless steel, available in plain, anti-slip toothed, and I-section profiles. Standard sizes are typically 20*5, 25*5, 30*3, 32*5, 40*5, 40*3, 50*5, 65*5, 100*8, and 100*10.

Bar: Made of the same material as the flat steel, it uses twisted square steel, which is formed by drawing squares from a disc and twisting them. Common specifications include 5*5, 6*6, 8*8, etc. C, from the above flat steel and bar, we can summarize the common specifications of grille panels: 303/30/100, 325/30/100, etc.