The steel grating is composed of bearing flat steel and cross bar at a certain spacing and is fixed by welding or press locking; The cross bar is generally made of twisted square steel, round steel or flat steel, and the materials are divided into carbon steel and stainless steel.

The steel grating is mainly used to make steel structure platform plate, trench cover plate, steel ladder step plate, building ceiling, etc.
Steel grating is applicable to alloy, building materials, power plants and boilers. Shipbuilding. Petrochemical, chemical and general industrial plants, municipal construction and other industries have the advantages of ventilation, light transmission, anti-skid, strong bearing capacity, beautiful and durable, easy cleaning, simple installation and so on.

Series classification of steel grating for different purposes:
Series 1 (spacing of 30mm) steel grating is a common type, which is widely used in various industrial fields. The center distance of the loaded flat steel of this series of steel grating is 30mm, which conforms to the American standard. In the whole steel grating series, it has strong resistance to surface impact. It is widely used in power plants, refineries, sewage treatment plants, granaries, chemical plants, highways, airports, docks and other platforms, walkways, drainage ditch covers, stair steps, etc. Among them, the toothed steel grating can be used in wet and slippery places, especially for offshore oil production platforms.

Series 2 (spacing 40mm) steel grating is economical and light, which conforms to the specifications of fixed platforms, walkways and stairs specified in British standards. It is an ideal product in the case of small span. Even under the load of transportation equipment walkways, it can also be used as the shelves of warehouses, the panels of pavilions, trestles, protective fences, sun curtains, etc.

Series 3 (60mm interval) steel grating is a variety developed especially for the application of mining industry, which solves the problem of mineral splashing on the plate surface. This series of steel grating has a vent with a nominal size of 50 * 60mm, which allows most of the splashed materials to pass through, thus ensuring the cleanness and safety of the plate surface. This product is often designated for the plate surface in the crushing system, the walkway on the conveyor line, the ball mill, the processing plant and the operation station. As a new engineering material, steel grating is mainly used as platform, trestle, bridge, highway guardrail, ditch cover plate, fence, gate and other facilities in metallurgy, energy, shipping, municipal, petrochemical, transportation, building materials, national defense and other fields.

Production standard
China, YB/T4001.1-2007 standard (China is the new version of steel grating standard in 2010); In addition, the United States, the United Kingdom, Australia and New Zealand also have their own standards, which can also be produced in accordance with British BS4592-1-1995 and American ANSI/NAAMM (MBG531-88) and other standards. The steel standard shall comply with GB700-88 and GB1220-92.

Surface treatment
Hot galvanizing, cold galvanizing, painting, no treatment.