Introduction to Steel Grating

Steel grating, also known as steel grid or grating panel, is made by welding flat steel and twisted steel. Durable and more cost-effective compared to other products, steel grating is primarily used in power plant platforms, parking lot platforms, maintenance platforms, trench covers, and step plates. It is also employed in environmental protection equipment and wastewater treatment. Steel grating is widely used in various fields such as petrochemicals, electricity, water supply, wastewater treatment, ports, construction decoration, shipbuilding, mobile parking lots, municipal engineering, and environmental sanitation projects, for platforms, walkways, gangways, covers, manholes, ladders, fences, and more.

Steel Grating Plates

Also known as steel grating or grating plate, it is a type of steel product made by crossing flat steel bars at certain intervals with crossbars, and welding them into a square-grid pattern. Primarily used for drain covers, steel structure platform panels, and stair treads. The crossbars are typically made of twisted square steel.

Manufacturing Process of Steel Grating Panels: Steel grating panels are made by welding load-bearing flat steel and cross bars at specific intervals using a 200-ton hydraulic resistance welding automation equipment to form the original plate, then processed through cutting, drilling, and edging, etc., to meet customer requirements. Spacing of Load-bearing Flat Steel: The spacing between adjacent load-bearing flat steels is commonly 30, 40, 50, and various other sizes. Spacing of Cross Bars: The distance between adjacent cross bars is typically 50, 76, 80, 100, and various other sizes, which can be produced according to customer requirements and customized to different steel grating panel models based on customer needs.

Product Features of Steel Grating Plates:

1: High strength, lightweight structure.

2: Excellent corrosion resistance, durable for long-term use.

3: Aesthetically pleasing with a glossy surface.

4: No accumulation of dirt, no accumulation of rain or snow, no water pooling, self-cleaning, easy to maintain.

5: Good ventilation, lighting, heat dissipation, anti-slip, and explosion-proof properties.

6: Easy to install and disassemble.

Product Applications: Widely used in the petrochemical, tobacco, electricity, water supply, wastewater treatment, port, wharf, construction decoration, shipbuilding, self-propelled parking lots, municipal engineering, environmental protection engineering, and other platforms, including walkways, gangways, manholes, covers, ladders, fences, and ceilings for industrial and civil buildings such as large sports venues, exhibitions, large-scale commercial facilities, stations, harbors, and airports.

Hot-dip galvanized steel grating

The product is a finished item, meticulously crafted from load flat steel and crossbars arranged at a specific spacing, which are then welded into an original plate on a high-pressure resistance welding machine. It undergoes further processing, including cutting, notching, punching, and edging, to meet the customer's specifications.

Galvanized steel grating is available in the following types:

1. Hot-Dip Galvanized Grating Panels, categorized by manufacturing process, include pressure-welded hot-dip galvanized grating panels and press-locked hot-dip galvanized grating panels.

2. Hot-dip galvanized steel grating surfaces are categorized by shape into toothed hot-dip galvanized steel grating and flat hot-dip galvanized steel grating.

3. Type I hot-dip galvanized steel grating and composite hot-dip galvanized steel grating.

Identification Method:

(1) Hot-dip galvanized steel grating flat steel spacing: differentiated by series: Series 1 is 30mm; Series 2 is 40mm; Series 3 is 60mm.

(2) Hot-dip galvanized steel grating bar spacing: Series 1 is 100mm, Series 2 is 50mm. Other specifications are available for customization.

(3) Hot-Dip Galvanized Steel Grating扁钢: Made of Q23 steel or stainless steel, available in flat, anti-slip toothed, and I-beam cross-section types. Common sizes include 20*5, 25*5, 25*3, 32*5, 32*5, 40*5, 40*3, 50*5, 65*5, 75*6, 100*8, 100*10, etc.

(4) Hot-Dip Galvanized Steel Grating Crossbars: Round steel, twisted square steel, square steel, or hexagonal steel made of Q23 or 304 stainless steel. Twisted square steel is produced by drawing through square dies from round steel coils and twisting, with common sizes including 5*5, 6*6, 8*8mm, etc.

Characterized by: High strength, light structure: The robust grid pressure-welded structure offers high load-bearing capacity, lightweight design, and easy hoisting features; aesthetically pleasing and durable.

Hot-Dip Galvanized Steel Grating Applications: Widely used in platforms, walkways, gangways, manhole covers, grates, ladders, fences, guardrails, etc., for industries such as petrochemicals, power plants, waterworks, sewage treatment plants, municipal engineering, and environmental protection projects.

Hot-Dipped Galvanized Steel Grating

(Hot-dip galvanized steel grating) is a highly popular product with wide applications in steel grating, which, after welding and forming, undergoes hot galvanizing treatment. Not only does it offer an aesthetically pleasing and elegant appearance, but it also provides excellent corrosion and rust prevention, extending its service life, and is deeply favored by numerous customers.

The features of hot-dip galvanized steel grating panels are: high strength, lightweight structure; its sturdy grid pressure-welded structure allows for high load-bearing capacity, light structure, and ease of lifting; attractive appearance, durable in use.

Corrosion Resistance: A stable protective film forms on the zinc layer surface within the pH range of 6 to 12.5, offering excellent corrosion resistance.

Hot-dip galvanized steel grating applications: Widely used in platforms, walkways, bridges, manhole covers, ladder, fences, guardrails, etc. in fields such as petrochemical, power plants, water plants, sewage treatment plants, municipal engineering, and environmental protection engineering.

Heavy-duty steel grating

1. Heavy-duty steel grating introduction:

Heavy-duty steel grating refers to the type with load-bearing flat steel width over 65mm and thickness over 6mm. The transverse bars usually consist of flat steel or reinforced steel bars with diameters of 10mm or 12mm.

2. Heavy-duty steel grating applications:

Heavy-duty steel grating is designed and manufactured for heavy load applications, suitable for airports, highways, industrial platforms, port terminals, and other special needs scenarios.

3. Heavy-duty steel grating classifications:

4. Heavy-duty steel grating can be divided into two types according to the production process: heavy-duty welded steel grating and heavy-duty riveted steel grating.

A. Heavy-duty welded steel grating refers to steel grating with steel bars as crossbars, suitable for unidirectional loading applications.

B. Heavy-duty press-locked steel grating refers to steel grating with flat steel bars, suitable for bidirectional loading applications. However, it is significantly more expensive than welded steel grating, and is generally not recommended for use.

C. Surface shapes can be divided into flat heavy-duty steel grating and toothed heavy-duty steel grating.

Due to cost considerations, we recommend using flat steel grating in general cases, and heavy-duty toothed steel grating for anti-slip applications such as offshore drilling platforms.

Composite steel grating

This product is composed of steel grating with certain cross-bearing capacity and patterned boards with a sealed surface. After hot-dip galvanizing, composite steel grating may experience warping and deformation due to heat, especially with larger sizes, making leveling challenging; please pay attention to the selection. The composite steel grating commonly uses Series 3 grating as the base, but Series 1 or Series 2 can also be used; patterned steel grating typically uses 3mm thick plates, but 4mm, 5mm, or 6mm plates can also be employed. By welding steel mesh to the front or back of the composite steel grating, a double-mesh board is formed, which can prevent small items from falling out. Using double-mesh boards in grain silos, restaurants, and warehouses can prevent rodents and other small animals from entering.

Composite Steel Grating Installation Method: Directly weld the steel grating or tread plate to the supporting steel structure, and apply two coats of zinc-rich paint at the welding joints. Use steel grating installation clamps for assembly, which do not damage the galvanized layer, and are easy to disassemble. Each set of installation clamps includes one upper clamp, one lower clamp, one M8 round head bolt, and one nut. Stainless steel installation clamps or bolt connection methods can be provided upon request. The installation gap for steel grating is generally 100mm. Ensure the installation is secure and reliable during assembly, and regularly inspect to prevent the clamps from loosening or falling off. It is recommended to weld or add rubber pads to the steel grating near vibration areas.

Platform steel grating

Platform steel grating is a widely applicable steel grating panel product, primarily used for various platforms in factories, workshops, mines, and ports. It boasts an elegant appearance, easy installation, and is a new type of building product that replaces older models.

Our platform's specialty steel grating panels are as follows:

1. Kick plates (edge guards) and patterned board guards can be additionally welded around the steel grating, along with installation of connecting components and other accessories.

2. Use flat steel strips of different specifications than those on the steel grating, or use angle steel, channel steel, square tubes, etc., for the edge.

3. Handles and hinges can be installed on the steel grating panels of platforms that require frequent movement or opening.

4. Generally speaking: The welding standard for the edge of platform steel grating panels is as follows: Series 1 - weld every five panels; Series 2 - weld every four panels; Series 3 - weld every three panels. The welds are single-sided angle welds of not less than 3mm, with a length of 20mm.

Stainless Steel Grating

Also known as stainless steel grating panels. There are usually two manufacturing methods: one involves combining and welding stainless steel flats and round bars; the other involves interlocking stainless steel flats. They offer strong corrosion resistance, a clean appearance, and a highly decorative effect, although they are generally more expensive.

Stainless Steel Grating Categories:

It can be categorized into flat, toothed, and I-shaped types, with over 200 specifications and varieties (the surface can be treated with different protective coatings depending on the usage environment).

Material: Typically, stainless steel grades 304, 316, 316L are used.

Manufacturing Method:

There are two types: machine welding and handcrafted. Machine welding uses a high-pressure resistance welding machine, where a robotic arm automatically places the crossbar horizontally on evenly arranged flat steel bars, then welds it into the flat steel using strong welding power and hydraulic pressure, resulting in a high-quality steel grating with strong weld points, high stability, and strength. Handcrafted steel gratings are first punched with holes on the flat steel, then the crossbars are inserted into the holes and spot-welded. There will be gaps between the crossbars and the flat steel, but each contact point is焊接, achieving an equivalent melting connection between the flat steel and the twisted steel, making the welding more solid and the strength slightly improved, although the appearance is not as aesthetically pleasing as that of machine welding.

Surface Treatment:

After pickling and passivation, the surface appears as a matte gray-white.

b. Electrochemical polishing results in a brighter surface with higher luster.

c. The finished product is heat treated and polished, followed by electrochemical polishing, then chrome plated, achieving a mirror-like finish.

Advantages:

Lightweight, high strength, high load-bearing capacity, cost-effective, well-ventilated and light-transmitting, modern style, aesthetically pleasing, non-slip, easy to clean, and simple to install.

Application:

Stainless steel grating panels are widely used in power plants, chemical factories, oil refineries, steel mills, machinery manufacturing plants, shipyards, paper mills, cement factories, food processing plants, and bridge engineering, municipal engineering projects, and wastewater treatment facilities where corrosion resistance is a high priority. The selection of stainless steel grating panels is similar to that of carbon steel grating panels. Due to their special properties, stainless steel grating panels are extensively applied in various factories both domestically and internationally.

Stainless Steel Grating Cover Plates

Stainless steel grating covers, also known as stair tread plates, steel stair tread plates, and tread plates, are a type of stairboard used for platforms. They come in two installation methods: welded connections and bolted connections. Welded tread plates can be directly welded to the stair beam.

Overview

Welded fixed tread plates, directly焊接 onto the ladder beam; no side plates for the tread plates are required, offering a more economical option. However, they are not easily removable. For bolted tread plates, thicker side plates are needed, with holes pre-drilled on the side plates for direct bolt installation, allowing for reuse and recycling. Customers can customize according to their specific needs, with steel grating of appropriate types available to be made into various sizes to match the respective staircase.

Features and Applications

(1) The installation of the step board is very easy, no complex installation required.

(2) Excellent ventilation, lighting, heat dissipation, explosion-proof, and anti-slip properties.

(3) High strength, lightweight structure, and durable tread plates.

(4) Extremely easy to maintain and prevents dirt accumulation.

Tread plates are widely used in platforms and walkways of factories such as power plants and water treatment plants, as well as in municipal and environmental protection projects. They are also commonly found in large venues like theaters, visitor platforms, and parking lots.

Grating panels

The grating is made by crossing flat steel bars at specific intervals with crossbars,焊接 into a steel product with square openings in the middle. It is primarily used for drain covers, steel structure platform panels, and step boards for steel ladders. The crossbars are generally made of twisted square steel.

Grating panels are typically made of Q235 low-carbon steel, with a hot-dipped galvanized finish to prevent oxidation. Stainless steel can also be used. Steel grating panels offer ventilation, lighting, heat dissipation, anti-slip, and explosion-proof properties.

Manufacturing Methods of Grating Plates: There are two methods, machine press welding and handcrafted. Machine press welding utilizes a high-pressure resistance welding machine, where a robotic arm automatically places the crossbars across evenly spaced flat steel bars, then the crossbars are pressed into the flat steel with powerful electric welding power and hydraulic pressure, resulting in high-quality grating plates with strong weld points, excellent stability, and enhanced strength. Handcrafted grating plates are first pierced with holes in the flat steel, then the crossbars are inserted into the holes and spot-welded. There will be gaps between the crossbars and the flat steel, and it's impossible to weld every contact point, so the welding is not as secure, and the strength is somewhat reduced.

Grille panel features:

1. High strength, lightweight structure: The sturdy grid weld structure offers high load-bearing capacity and is lightweight.

2. Easy for hoisting and other features.

3. Aesthetically pleasing and durable: Hot-dip galvanized surface treatment provides excellent corrosion resistance.

4. Attractive surface luster

5. Good ventilation, lighting, heat dissipation, explosion-proof, and anti-slip performance; resists accumulation of dirt.

Grating panel applications: Widely used in various industries such as petrochemicals, municipal engineering, port engineering, machinery industry, power plants and waterworks, steel industry, manufacturing, food processing, and more.

Insertion steel grating

Interlocking Steel Grating: Also known as double-interlocking steel grating, it is manufactured through processes such as slotting (punching), interlocking, welding, and finishing, using flat steel, stainless steel, brass, and aluminum plates of specific dimensions. The interlocking steel grating combines the high strength, corrosion resistance, and maintenance-free features of ordinary steel grating, with a uniform structure that is lightweight, exquisite, natural, harmonious, and elegant. This product is widely used for drain covers, stair treads, and pond covers.

Category:

Four types of interlocking steel grating can be distinguished: Classification of interlocking steel grating: Differing by insertion method and angle, it includes pressed steel grating, heavy-duty steel grating, solid steel grating, and sunshade curtain steel grating, etc.

1. Pressed Steel Grating: After cutting grooves in the bearing flat steel, the crossbar flat steel is pressed and locked into shape. Generally, the large processing height for producing standard steel grating is 100mm. The length of the steel grating is usually less than 2000mm.

2. Heavy-duty grating panels are a type of steel grating product formed by interlocking high flat steel and crossbar flat steel, which is tightly molded under 1200 tons of pressure. They are suitable for high-span and high-load-bearing applications.

3. Integral Steel Grating Panels - The load-bearing flat steel and cross-bar flat steel in integral steel grating panels have the same height and slot depth, which is half that of the load-bearing flat steel. The height of the steel grating is not greater than 100mm. The length of the steel grating is usually less than 2000mm.

4. Sunshade Interlocking Steel Grating: The load-bearing flat steel of the sunshade interlocking steel grating features 30° or 45° slits, and the slotting flat steel is formed by pressing and locking. We can deliver grating panels with different spacings and specifications as per requirement, available in materials such as carbon steel, stainless steel, and aluminum. The height of the grating panels is less than 100mm.

Features: The steel grating features solid weld points, uniform hole spacing, smooth surface, aesthetically pleasing design, practical lightweight, high strength corrosion resistance, and maintenance-free.

Usage: Widely used in civil and commercial buildings, theaters, subways, city rail systems, and other municipal engineering projects. Suitable for ceiling, interior and exterior decoration, platforms, ventilation windows (wells), billboards, various covers, etc. The interlocking grating panels have firm welding points, uniform hole spacing, and a smooth surface, with an aesthetically pleasing and practical design. They are both utility items and works of art. Over the years, we have developed more than a hundred varieties, and our exported products, with sixteen popular choices, have been highly favored by customers.