Steel grating is in accordance with a certain distance and crossbar (twisted steel, square steel, round steel, flat steel, etc.) staggered with flat steel, and welded into the middle of an iron and steel products with a square lattice, steel grating moderators use to do the drain cover, steel platform boards, ladders stepping board. After twisted rails commonly used square steel. Grating commonly used carbon steel, hot dip galvanized appearance, can serve to prevent oxidation. Can also be made of stainless steel. Steel grating with ventilation, lighting, cooling, slip-proof properties. Production of standard steel grating: China YB4001-1991, YB / T4001-1998 standards, can also be produced in accordance with British BS4592-1-1995 and American ANSI / NAAMM (MBG531-88) and other standards. Steel grating production methods: pressure welded steel grating is composed of load flat steel and bars with certain distances, using 200 tons of hydraulic resistance welding automation equipment welded into the original plate, after cutting, drilling, machining and other processes Hemming to customer requirements. Loaded flat pitch: two adjacent bearing bars by the center distance, commonly 30MM, 40MM two kinds. Bar spacing: distance between the centers of two adjacent 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: saving material: bearing the same way most provinces material loading conditions, and accordingly, can reduce the material of the support structure. Reduce investment: saving materials, the provincial labor, provincial period, free cleaning and maintenance. Construction is simple: in the pre-installed on the support given country or welding clamp bolt fixing, one person to complete. Saving period: product without on-site reprocessing, installation is very fast. Durable: the factory hot-dip zinc corrosion protection, impact resistance and weight ability. Modern style: appearance, design specifications, air and light, giving the overall sleek, contemporary feel. Structural lightweight: less timber, light structure, and easy lifting. Reduce wind resistance: Due to good ventilation, windy wind resistance and reduce wind damage. Against product contamination: no accumulation of rain, snow and dust. Ventilation, lighting, cooling, explosion-proof, non-slip performance is good design is simple: no small beam, simple structure, design simplification; no detail design of steel lattice panels, you can only specify the model, customers can design factory exhaust plate Fig. Acid corrosion capacity: in PH 6 to PH 12.5 range, the zinc layer on the surface to form a stable protective film, good corrosion resistance. Steel grating for different purposes Series: Series 1 (pitch 30mm) steel grating is the most common type, use the product throughout the various industrial fields, such series by steel grating bearing bars center distance is 30mm, in line with US standards provides that, in the entire steel grating series, with the strongest impact on the surface resistance. It is widely used in power plants, refineries, sewage treatment plants, silos, chemical plants, highways, airports and docks and other platforms, walkways and drain cover, stair stepping, etc. Steel grating teeth which can be used for wet, slippery places, especially for offshore oil platforms. Series 2 (pitch 40mm) steel grating is the most economical and lightweight, comply with British standards for fixed platforms, walkways and stairs specifications, in a small span of occasions, this is the best product, even in the transportation equipment walkway Under that kind of load is no exception, but also can be used for warehouse shelves, pavilion panels, bridge, protective fence, sun screens and so on. Series 3 (pitch 60mm) steel grating is designed specifically for the application and development of the mining industry varieties, it solves the mineral splash on the plate problem. This series steel grid plate having a size of 50 * 60mm nominal pass air, allowing most of the splashed material wear off, so as to ensure a clean and safe plate surface, this product is often used to specify the crushing system board conveying line walkways and ball mill, processing plant and operate stations.