After the production of galvanized steel grating and grating, rust prevention treatment should be carried out. There are two types: hot-dip galvanizing (hot-dip galvanizing) and electroplating galvanizing (cold galvanizing).
The standard for galvanized steel grating is GB/T 13912-2002 Technical requirements and experimental methods for hot-dip galvanizing of steel parts; Cold galvanizing is not advocated by the country due to its high pollution.
Grille plate is also known as steel grating, which is a type of steel product made by arranging flat steel at a certain distance and crossing horizontal bars, and welding them into a square grid in the middle. It is mainly used to make gutter cover plates, steel structure platform plates, steel ladder step plates, etc. Horizontal bars are generally made of twisted square steel as a new material and product, which is increasingly widely used. Its superior performance and good cost performance ratio show its application prospects.
The production methods of steel grating include machine pressure welding and manual production Machine pressure welding uses a high-voltage resistance welding machine, where the robotic arm automatically places the horizontal bar horizontally on a uniformly arranged flat steel. With strong welding power and hydraulic pressure, the horizontal bar is pressed and welded into the flat steel, resulting in high-quality grid plates with strong, stable, and high-strength welding points Handmade grating panels are first punched on flat steel, and then the horizontal bars are spot welded into the holes. There may be gaps between the horizontal bars and the flat steel, and it is impossible to weld every contact point, resulting in weak welding and reduced strength
Galvanized steel grating can be used in metallurgy, mining, petroleum, power and industrial fields, as well as some civilian fields. Galvanized steel grating, as a new type of building material, is increasingly being widely used. The so-called new materials have a history of over several decades in foreign countries, but they have only been widely used in China in the past decade. But like aluminum alloy doors and windows, compared to traditional materials, people still habitually refer to them as new materials.
