Introduction to Steel Grating

Steel grating, also known as steel grating plate or grate plate, is made by welding flat steel and twisted steel. Durable and cost-effective compared to other products, steel grating is primarily used in power plant platforms, parking lot platforms, maintenance platforms, drain covers, and tread 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, port terminals, architectural decoration, shipbuilding, mobile parking lots, municipal engineering, and environmental sanitation projects, including platforms, walkways, gangways, drain covers, manholes, ladders, and fences.

Steel Grating Plates

Also known as steel grating or grille plate, it is a type of steel product formed by cross-arranging flat steel bars at a certain spacing with crossbars and welding them into a square grid pattern. It is primarily used for drain covers, steel structure platform plates, and steel ladder tread plates. The crossbars are usually made of twisted square steel bars.

Manufacturing Process of Steel Grating Panels: Steel grating panels are made by arranging load-bearing flat steel and crossbars at certain intervals, then焊接 using a 200-ton hydraulic resistance welding automation machine to form the original plate. After cutting, punching, and edging, the final product as per customer requirements is produced. Spacing of Load-bearing Flat Steel: The spacing between adjacent load-bearing flat steels is commonly 30, 40, and 50, among others. Spacing of Crossbars: The distance between adjacent crossbars is typically 50, 76, 80, 100, and more, which can be produced according to customer specifications and customized in various steel grating panel models to meet customer needs.

Product Features of Steel Grating Plates:

1: High strength, lightweight structure.

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

3: Attractive appearance, glossy surface.

4: Non-staining, non-accumulating rain or snow, non-accumulating water, self-cleaning, easy to maintain.

Ventilation, lighting, heat dissipation, anti-slip, and explosion-proof performance are excellent.

Easy to install and disassemble.

Product Applications: Widely used in the petrochemical, tobacco, electric power, water supply, wastewater treatment, port, wharf, construction decoration, shipbuilding, self-propelled parking, municipal engineering, environmental protection engineering, and other platforms, walkways, gangways, manholes, covers, ladders, fences, large sports venues, exhibitions, large-scale commercial buildings, stations, ports, airports, and other industrial and civil buildings for ceiling applications.

Hot-Dip Galvanized Steel Grating

The product is a finished item made from original plates, which are formed by welding load flat steel and crossbars at a certain spacing on a high-pressure resistance welding machine. It is then further processed through cutting, beveling, punching, and edging, etc., to meet the customer's specifications.

Hot-dip galvanized steel grating is categorized into the following types:

1. Hot-dip galvanized steel grating, categorized by manufacturing process, includes press-welded hot-dip galvanized steel grating and press-locked hot-dip galvanized steel grating.

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

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

Marking 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 crossbar spacing: Series 1 is 100mm, Series 2 is 50mm. Other specifications are available for customization.

(3) Hot-Dip Galvanized Steel Grating: Made of Q23 steel or stainless steel, available in flat, anti-slip toothed, and I-section designs. 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, and 100*10.

(4) Hot-Dip Galvanized Steel Grating Cross Bars: Made of round steel, twisted square steel, square steel, or hexagonal steel with material grade Q23 or 304 stainless steel. Twisted square steel is produced by drawing through square dies from round steel wire and then twisting it, with common sizes including 5*5, 6*6, 8*8mm, etc.

Features include: High strength, lightweight structure: The sturdy grid pressure welding structure offers high load-bearing capacity, lightweight, and easy to hoist; aesthetically pleasing and durable.

Hot-Dip Galvanized Steel Grating Applications: Widely used in platforms, walkways, bridges, manholes, covers, ladders, fences, and guardrails in the fields of petrochemicals, power plants, waterworks, sewage treatment plants, municipal engineering, and environmental protection projects.

Hot-Dipped Galvanized Steel Grating

Hot-dip galvanized steel grating panels are a widely used product in the steel grating industry, known for their aesthetic appeal and excellent corrosion and rust prevention, which extends their service life. They are highly favored by our customers.

Hot-dip galvanized steel grating panels feature high strength and lightweight structure; their sturdy grid pressure-welded construction provides high load-bearing capacity, lightweight design, and ease of hoisting; they also offer an aesthetically pleasing appearance and durability.

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

Hot-dip galvanized steel grating applications: Widely used in platforms, walkways, gangways, manhole covers, ladder covers, fences, railings, etc., in fields such as petrochemicals, power plants, waterworks, 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 steel grating with a bearing width of over 65mm and a bearing thickness of over 6mm, with crossbars typically made of flat steel or steel rebar 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, harbor wharfs, and other special needs scenarios.

3. Heavy-duty steel grating classification:

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

A. Heavy-duty press焊接钢格板 refers to steel grating with steel bars as transverse bars, suitable for unidirectional loading applications.

B. Heavy-duty pressed steel grating refers to 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 ribbed heavy-duty steel grating.

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

Composite steel grating

This product is composed of steel grating panels with certain cross-carrying capacity and patterned boards with sealed surfaces. After the composite steel grating is hot-dipped galvanized, it may undergo warping and deformation due to heat, especially for larger sizes, which can be difficult to flatten. Please pay attention to the selection. The composite steel grating commonly uses Series 3 steel grating as the base, but Series 1 or Series 2 steel gratings can also be used. Patterned steel gratings usually use 3mm thick plates, but 4mm, 5mm, or 6mm plates can also be used. By welding a steel mesh to the front or back of the composite steel grating, a double-mesh panel is formed, which can prevent small items from falling out. The use of double-mesh panels in grain silos, restaurants, and warehouses can prevent the entry of mice and other small animals.

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 to the welding joints. Use steel grating installation clamps to avoid damaging the galvanized layer, making disassembly easy. Each set of installation clamps includes one top clamp, one bottom clamp, one M8 round head bolt, and one nut. Stainless steel installation clamps or bolt-connection fastening methods can be provided upon request. The installation gap for steel grating is typically 100mm. Ensure the installation is secure and reliable, and regularly inspect to prevent clamp loosening or detachment. It's best to weld or add rubber pads to steel grating near vibration.

Platform Steel Grating

Platform steel grating is a widely applicable product within the steel grating board category, primarily used for platforms in factories, workshops, mines, and ports. It is aesthetically pleasing, easy to install, and represents a new generation of architectural products, ideal for replacing outdated ones.

Platform specialty steel grating products include:

1. Kick plates (edge guards), patterned steel plate guards, and mounting accessories can be added around the steel grating.

2. Utilize flat steel strips with different specifications than those used for the steel grating edge, or use angle iron, channel steel, square tubes, etc., for edging.

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

4. Generally speaking: The welding standard for the edge of the 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 methods of production: one involves welding together stainless steel flat bars and round bars; the other is the interlocking of stainless steel flat bars. They possess excellent corrosion resistance, have a neat appearance, and offer a quite ideal decorative effect, although they are generally more expensive.

Stainless Steel Grating Categories:

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

Material: Generally, stainless steel grades 304, 316, 316L, etc., are chosen.

Manufacturing Process:

There are two types: machine pressure welding and handcrafted. Machine pressure welding utilizes a high-pressure resistance welding machine, where a robotic arm automatically places the crossbar horizontally on uniformly arranged flat steel strips, then welds it into the flat steel using strong electrical welding power and hydraulic pressure, resulting in a high-quality steel grating with strong weld points, excellent stability, and high strength. Handcrafted steel gratings are first pierced on the flat steel strips, then the crossbars are inserted into the holes and spot-welded. There will be gaps between the crossbars and flat steel, but each contact point is焊接, achieving equivalent melting connection with the flat steel and twisted steel, thus making the welding more solid and slightly enhancing the strength. However, the appearance is not as aesthetically pleasing as pressure 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, and then chrome-plated to achieve a mirror-like finish.

Advantages:

Lightweight, high strength, high load capacity, cost-effective, ventilation and light transmittance, modern style, aesthetically pleasing, anti-slip, easy to clean, easy to install.

Usage:

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

Stainless Steel Grating Covers

Stainless steel channel grating, also known as stair tread plate, steel stair tread plate, and tread plate, is a type of stairboard used for platforms. It comes in two installation methods: welded joints and bolted joints. The welded tread plates can be directly welded onto the stair beams.

Overview

Welded fixed tread plates, directly welded to the ladder beam, without the need for additional side plates for the tread plates; more economical but not easily removable. Tread plates secured with bolts require thicker side plates, with holes pre-drilled for direct bolt installation, allowing for reuse and recycling. Customers can customize according to their specific needs, using suitable steel grating materials to create various sizes to match the corresponding staircase.

Features and Applications

(1) The installation of the step board is very simple and does not require complex assembly.

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

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

(4) Easy maintenance and anti-soiling.

Tread plates find extensive use in various settings, including platforms and walkways in power plants, water treatment facilities, and factories, as well as in municipal and environmental protection projects. They are also widely employed on ground platforms in large venues such as cinemas, visitor platforms, and parking lots.

Grating panels

The grating is a steel product formed by crossing flat steel bars at a certain spacing with crossbars,焊接成带有方形格子的结构。It is primarily used for drain covers, steel structure platform panels, and step plates for steel ladders. The crossbars are typically 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 uses a high-pressure resistance welding machine, where a robotic arm automatically places the crossbars across evenly arranged flat steel bars. The strong welding power and hydraulic pressure then weld the crossbars into the flat steel, resulting in high-quality grating plates with solid weld points, excellent stability, and strength. Handcrafted grating plates are first punched 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 flat steel, and it's impossible to weld every contact point, so the welding is not as secure, and the strength is reduced.

Grating plate features:

1. High strength, lightweight structure: The sturdy grid pressure-welded structure offers high load-bearing capacity and a lightweight design.

2. Easy for hoisting and other features;

3. Attractive Appearance and Durable: Hot-dipped galvanized surface treatment provides excellent corrosion resistance.

4. Attractive surface luster

5. Excellent ventilation, lighting, heat dissipation, explosion-proof, and anti-slip performance; resistant to accumulation of dirt.

Grating panels are widely used in various industries such as petrochemicals, municipal engineering, port engineering, machinery industry, power plants, waterworks, iron and steel industry, manufacturing, and food processing.

Slotted steel grating

Interlocking Steel Grating: Also known as double-sided interlocking steel grating, it is manufactured through processes such as slotting (punching), interlocking, welding, and finishing, using steel flats, stainless steel, brass, and aluminum plates of certain dimensions. The interlocking steel grating features the high strength, corrosion resistance, and maintenance-free characteristics of ordinary steel grating, combined with uniform structure, light and exquisite design, natural harmony, and elegant style. 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 methods and angles, they include 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 cross-bar 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 interlocking steel grating is a steel grating product formed by high-width steel and crossbar steel interlocking and tightly molded under 1200 tons of pressure. It is suitable for high-span load-bearing applications.

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

4. Sunshade Interlocking Steel Grating: The load-bearing flat steel of the sunshade interlocking steel grating features 30° or 45° slits, with the slot bars locking into place through the slits. We can deliver gratings with different spacing and specifications according to customer needs, using materials such as carbon steel, stainless steel, aluminum, etc. The height of the grating is less than 100mm.

Features: Welded steel grating features include sturdy weld points, uniform hole spacing, flat surface, aesthetically pleasing design, practical and lightweight, high strength corrosion resistance, and maintenance-free.

Application: Widely used in civil and commercial buildings, theaters, subways, urban rail projects, and other municipal engineering fields. Suitable for ceiling, indoor and outdoor decoration, platform walkways, ventilation windows (wells), billboards, various covers, etc. The interlocking grill plates feature sturdy welding points, uniform hole spacing, and a smooth surface. The design is both aesthetic and practical, serving as both a utility and an art piece. Over the years, we have developed more than a hundred varieties, with sixteen export products particularly favored by customers.