Steel grid plate, drain cover, staircases boards, pool cover, plug grille plate,steel grille fences by the load flat steel bar and with a certain amount of distance warf and weft, high pressure resistance welding machine from the original plate welding, cutting the incision, opening, the processes of deep-packet processing form.

　　The product of a simple, light weight, load, impact resistance, the hot dip zinc treated appearance and durability, and anti-rust anti-corrosion, surface gloss appearance with ventilation, lighting, cooling, explosion-proof, anti-skid performance of the proposed method. Widely used in petrochemical, power plants, water, sewage treatment plants, municipal works, sanitation projects in areas such as platforms, corridors, bridge, ditch covered wells, ladder, fences, etc. guardrail