Hot-dip galvanised steel grating, also known as hot-dip galvanised steel grating, is a grid-like building material made of low carbon steel flat bars and twisted square steel welded horizontally and vertically. Hot-dip galvanised steel grating has strong impact resistance, high corrosion resistance and heavy load capacity, and is elegant and aesthetically pleasing and has superior performance in municipal road foundations and steel platform construction projects. The high cost performance ratio of hot-dip galvanised steel grating is widely used in the construction of gutter roads for the paving of old and new road foundations.
The hot-dip galvanised steel grating has a special hot-dip galvanised surface which is chemically and physically stable and not easily oxidised by air and microbial corrosion. It can significantly increase the gutter loading force. Prevents collapse. The hot-dip galvanised steel grating with a flat steel spacing of 3 cm has a greater impact resistance and features a maximum span range. The longer its service life, generally in the range of 40 – 50 years. If no perceived vandalism is involved, hot-dip galvanised steel grating is a very good steel frame structure and load-bearing platform.
Hot-dip galvanised steel grating is made of load flat bars and cross bars arranged warp and weft at a certain spacing, welded on a high pressure resistance welding machine to form the original plate, then cut, notched, perforated and edged to produce the finished product as required by the customer.
According to the manufacturing process, hot-dip galvanized steel grating is considered as press-welded hot-dip galvanized steel grating and press-locked hot-dip galvanized steel grating; according to the surface shape of hot-dip galvanized steel grating, it is divided into tooth-shaped hot-dip galvanized steel grating, flat hot-dip galvanized steel grating, I-type hot-dip galvanized steel grating and composite hot-dip galvanized steel grating.
1、Ordinary hot-dip galvanised grating
After the load-bearing flat steel is grooved, the crossbar is press-locked into shape. The maximum processing height of common type grating is 100mm, and the length of grating is usually less than 2000mmm.
2. Integral hot-dip galvanised grating
The height of the grating is not more than 100mm and the length of the grating is usually less than 2000mm.
3、Shade type hot-dip galvanized grating
The load-bearing flat bar is slotted at 30° or 45° and the slotted flat bar is press-locked. According to different needs, other spacing and specifications of grating can be used, such as ordinary carbon, stainless steel, aluminium and other materials. The height of the grating is less than 100mm.
4、Heavy-duty hot-dip galvanised grating
The high flat profile and the crossbar flat profile are pressed together and formed under a pressure of 1200 tons. Suitable for high span load-bearing applications.
Hot-dip galvanised steel grating specifications
(1) Hot-dip galvanised steel grating centre spacing: 30mm for series 1, 40mm for series 2 and 60mm for series 3.
(2) Hot-dip galvanized steel grating horizontal bar centre spacing: 100mm for series 1, 50mm for series 2. Other specifications are available on request.
(3) Hot-dip galvanized steel grating flat bar: material is Q235A or stainless steel, there are ordinary flat type, anti-slip tooth type and section I type. Common specifications are 20*5, 25*5, 25*3, 32*5, 30*5, 40*5, 40*3, 50*5, 65*5, 75*6, 100*8, 100*10, etc.
(4) Hot-dip galvanized steel grating cross bars: round steel, twisted square steel, square steel or hexagonal steel made of Q235A or 304 stainless steel. The twisted square steel is made by drawing and twisting the disk garden through the square mould, its common specifications are 5*5, 6*6, 8*8mm, etc.
Material saving: the most material-saving way to bear the same load conditions, accordingly, the material of the supporting structure can be reduced.
Reduced investment: material saving, labour saving, time saving, no cleaning and maintenance.
Easy to construct: fastening with bolt clamps or welding on pre-installed bearings can be done by one person.
Time saving: the product does not need to be reworked on site and is very quick to install.
Durable: factory-treated with hot-dip galvanised corrosion protection for high resistance to impact and heavy pressure.
Modern and elegant: beautiful appearance, standard design, ventilation and light transmission, giving people an overall smooth and modern feeling.
Lightweight structure: less material, light structure, and easy to lift.
Anti-dirt accumulation: no accumulation of rain, snow, ice or dust.
Reduced wind resistance: due to good ventilation, there is little wind resistance in the event of high winds, reducing wind damage.
Easy design: no need for small support beams, simple structure, simplified design; no need to design steel grating detail drawings, just specify the model number, the factory can design the plate-plan on behalf of the customer.
Good ventilation, light, heat dissipation, explosion-proof and anti-slip properties: acid and alkali corrosion resistance: within the range of PH 6 to PH 12.5, a stable protective film is formed on the surface of the zinc layer, with good corrosion resistance.
1、The characteristics of hot-dip galvanized steel grating are: high strength, light structure: the solid grid pressure welding structure makes it high load-bearing, light structure, easy to be lifted, etc.; beautiful appearance, durable.
2, hot dip galvanized steel grating uses: widely used in petrochemical, power plants, water plants, warehouse construction, sewage treatment plants, municipal engineering, sanitation engineering and other fields of platform, walkway, trestle, ditch cover, manhole cover, ladder, fence, guardrail, etc.
1、The characteristics of hot-dip galvanized steel grating are: high strength, light structure: the solid grid pressure welding structure makes it high load-bearing, light structure, easy to be lifted, etc.; beautiful appearance, durable.
2, hot dip galvanized steel grating uses: widely used in petrochemical, power plants, water plants, warehouse construction, sewage treatment plants, municipal engineering, sanitation engineering and other fields of platform, walkway, trestle, ditch cover, manhole cover, ladder, fence, guardrail, etc.
Examples
1、Hot-dip galvanised steel grating
The hot-dip galvanised steel grating is formed by welding flat bars 65mm-200mm wide, 5mm-20mm thick, etc. It is a heavy-duty hot-dip galvanised steel grating. It is suitable for large freight yards, wharves, coal mine road bridge warehouse construction, etc. It can carry large trucks through.
2、Hot-dip galvanised steel grating (flat bar spacing 40mm)
Hot-dip galvanised steel grating with a spacing of 40mm is the most economical and lightest variety. It is the ideal choice for small spans.
3、Hot-dip galvanized steel grating (spacing of 60mm)
Hot-dip galvanised steel grating with a flat bar spacing of 60mm and a cross bar of 50mm is suitable for use in the mining industry to solve the problem of mineral spills on the surface of the plate and is often specified for use in processing plants in the mining industry.
4. Hot-dip galvanised steel grating (30mm flat bar spacing)
Hot-dip galvanised steel grating with a flat bar spacing of 30mm is the most widely used variety in the industrial sector. It has the strongest resistance to surface impact in the range of commonly used hot-dip galvanised steel grating.
5. Hot-dip galvanised steel grating (I-beam)
Hot-dip galvanised steel grating welded from I-shaped flat bars is light in weight and has a high load capacity. They are suitable for various applications, especially for walkways, viewing platforms, etc.
Hot-dip galvanised steel grating can be installed and fixed in two ways: welded and clamped, depending on the actual situation.
For permanent installation without dismantling, welding can be used to fix it to the support. The specific position, on the first flat bar of each corner of the hot-dip galvanised steel grating, is a weld no less than 20 mm long and no less than 3 mm high corner weld. Galvanised steel grating is extremely cost effective and is widely used on new and old road foundations, and is particularly widespread in paving gutter road construction. It also has excellent performance in municipal roads and steel building platform projects. The plate has a high resistance to corrosion loads and a high impact resistance. The galvanised steel grating with a flat steel spacing of 3 cm is particularly resistant to impact and has a maximum transverse amplitude force, and has a typical service life of 40-50 years without human intervention.
The use of mounting clips has the advantage of not damaging the zinc layer and of easy dismantling. This method is applicable to all series of steel grating and at least four sets of mounting clips are used for each steel grating. For hot-dip galvanised steel grating with a large span, it is best to install several more on the supporting steel structure.
