1. Definition

Steel grating is a metal product with square grids in the middle, which is made of load-bearing flat steel and cross bars arranged crosswise at a certain interval and connected by welding or pressing.

2. Classification

According to the manufacturing process:

Pressure-welded steel grating

Manually welded steel grating

According to the surface shape:

Tooth-shaped steel grating

Flat-type steel grating

According to the material:

Hot-dip galvanized steel grating

Stainless steel grating

According to the flat steel welding method:

Plug-in steel grating

Composite steel grating

Other classifications:

According to the shape: fan-shaped steel grating, special-shaped steel grating, etc.

According to the occasion of use: ditch cover, stair tread, platform, etc.

According to the surface treatment: hot-dip galvanizing, cold-dip galvanizing, spray painting, etc.

According to the specifications: heavy-duty steel grating, dense steel grating, etc.

3. Uses

Steel grating is widely used in platforms, trestles, bridges, highway guardrails, ditch covers, fences, gates and other facilities in the fields of metallurgy, energy, shipping, municipal administration, petrochemicals, transportation, building materials, and national defense. Specific uses include industrial platforms, ladder steps, handrails, passageways, railway bridge side roads, high-altitude tower platforms, drainage ditch covers, manhole covers, road guardrails, etc.

IV. Production process

Raw material preparation: Select suitable steel materials, such as steel plates and steel sections, and perform cutting and surface treatment.

Punching: Use a punching machine to punch holes in the steel plate to form the required shape and size.

Welding: Weld the punched steel plates to form the basic structure of the steel grating.

Cutting and forming: Cut the welded steel grating into the required size and shape.

Edge wrapping: Edge wrap the cut steel grating to increase its beauty and safety.

Galvanizing: Galvanize the surface of the steel grating to prevent rust and corrosion and increase its service life.

Packing and delivery: Number and pack the galvanized steel grating, and then deliver it to the location specified by the customer.

V. Specifications and parameters

The specifications and parameters of the steel grating usually include plate thickness, hole spacing, frame, etc. The plate thickness is generally available in a variety of thicknesses, such as 3mm, 5mm, 6mm, 8mm, 10mm, etc.; the hole spacing is determined according to the requirements of different specifications and uses, generally 30mm, 40mm, 50mm, etc.; the height and thickness of the frame will affect the overall strength and stability of the steel grating.

VI. Market Prospects

As a new type of engineering material, steel grating has a large market demand and broad application prospects. At present, China's annual demand is about 270,000 tons, and it has been widely used in hundreds of factories at home and abroad, such as power plants, chemical plants, refineries, steel mills, etc.