Steel Grating Manufacturer

Introduction to Steel Grating

Steel grating, also known as steel grating plate or grid plate, is焊接 from flat steel and twisted steel. Durable and cost-effective compared to other products, it is primarily used in power plant platforms, parking lots, maintenance platforms, trench covers, and step plates. It is also applied in environmental protection equipment and wastewater treatment. Steel grating is widely used in various fields such as petrochemical, electricity, water supply, wastewater treatment, port wharves, architectural decoration, shipbuilding, mobile parking lots, municipal engineering, and environmental sanitation projects, including platforms, walkways, gangways, trench covers, manhole covers, ladders, fences, etc.

Steel Grating Plates

Also known as steel grid or grating panels, these are steel products made by crossing flat steel bars at certain intervals with crossbars, welded into a grid with square openings. They are primarily used for drain covers, steel structure platform panels, and step plates for steel ladders. The crossbars typically use twisted square steel.

Manufacturing Process of Steel Grating Plates: Steel grating plates are made by arranging load-bearing flat steel and crossbars at a certain spacing, then welded into a sheet using a 200-ton hydraulic resistance welding automation machine. The sheet is then processed through cutting, drilling holes, and edging, resulting in the product as required by the customer. Spacing of Load-Bearing Flat Steel: The spacing between two adjacent load-bearing flat steels is commonly 30, 40, 50, and other sizes. Spacing of Crossbars: The distance between two adjacent crossbars is typically 50, 76, 80, 100, and other sizes, which can be produced according to customer requirements and customized to various steel grating plate models based on customer needs.

Product Features of Steel Grating Plates:

1: High strength, light structure.

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

3: Aesthetically pleasing with a glossy surface.

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

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

Easy to install and dismantle.

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

Hot-Dip Galvanized Steel Grating

The product is a finished goods as per customer requirements, which is made by welding load flat steel and cross rods in a certain spacing on a high-voltage resistance welding machine, and then undergoes deep processing such as cutting, notching, punching, and edging.

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

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

2. Hot-dip galvanized steel grating is 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 Bar Spacing: Distinct 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-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, and 100*10.

(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 wire rods and then twisting, with common sizes including 5*5, 6*6, 8*8mm, etc.

Features include: High strength, lightweight structure: The sturdy grid pressure-welded structure offers high load-bearing capacity, lightness, and ease of hoisting; aesthetically pleasing, durable in use.

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

Hot-Dipped Galvanized Steel Grating

Hot-dip galvanized steel grating is a widely used product in steel grating applications, featuring not only an aesthetically pleasing appearance but also excellent corrosion and rust resistance, thereby extending its service life. It is highly favored by numerous customers.

Hot-dip galvanized steel grating panels feature high strength and lightweight structure; their sturdy grid pressure-welded construction offers high load-bearing capacity, lightweight design, and ease of hoisting; they also boast an attractive 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 excellent corrosion resistance.

Hot-dip galvanized steel grating applications: Widely used in platforms, walkways, gangways, manhole covers, grates, ladders, fences, and railings in fields such as petrochemicals, power plants, waterworks, sewage treatment plants, municipal engineering, and environmental protection engineering.

Heavy-duty steel grid

1. Heavy-duty steel grid introduction:

Heavy-duty steel grating refers to grating with a bearing width of over 65mm and a bearing thickness of over 6mm. Its transverse bars are typically made of flat steel or reinforced steel bars with a diameter 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 requirements.

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 reinforcing bars as cross bars, suitable for unidirectional loading applications.

B. Heavy-duty press-locked steel grating refers to grating with flat steel bars. It is suitable for bidirectional loading applications, but it is significantly more expensive than welded steel grating. Generally, it is 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 most 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 embossed patterned boards with a sealed surface. After the composite steel grating is hot-dip galvanized, it may undergo warping and deformation due to heat, especially for larger-sized steel gratings, 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. The embossed steel grating typically uses 3mm thick plates, but 4mm, 5mm, or 6mm plates can also be used. A double mesh can be formed by welding steel mesh to the front or back of the composite steel grating, which can prevent small items from falling out. Using double mesh in grain silos, restaurants, and warehouses can prevent small animals like rats 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 without damaging the galvanized layer, and for easy disassembly. 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 methods can be provided upon request. The typical installation gap for steel grating is usually 100mm. Ensure the installation is secure and reliable, and regularly check to prevent the clamps from loosening or falling off. It's best to weld or add rubber pads to steel grating near vibration sources.

Platform steel grating

Platform steel grating is a widely applicable product within the steel grating plate category. It is primarily used in various platforms across factories, workshops, mining, and ports, offering an aesthetically pleasing and easy-to-install option. It represents a new type of building product that replaces older models.

Platform specialty steel grating products include:

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

2. Utilize flat steel strips with different specifications for the perimeter of the steel grating, or use angle steel, channel steel, square tubes, etc., for the perimeter.

3. Handles and hinges can be installed on 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 one out of every five panels; Series 2 - weld one out of every four panels; Series 3 - weld one out of 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 manufacturing: 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, a clean appearance, and a very ideal decorative effect, though 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 application environment).

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

Manufacturing Process:

There are two types: machine welding and handcrafted. Machine welding utilizes a high-pressure resistance welding machine, where a robotic arm automatically places the crossbar across evenly arranged flat steel bars, then welds it into the flat steel using strong electric 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 punched with holes in the flat steel, then the crossbars are inserted and spot-welded, leaving gaps between the crossbars and flat steel. However, each contact point is焊接, achieving an equivalent melting connection between the flat steel and twisted steel, making the welding more solid and slightly increasing the strength, but the appearance is not as aesthetically pleasing as that of machine welding.

Surface Treatment:

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

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

c. Products are heat and polished, followed by electrochemical polishing, then chrome plated to achieve a mirror-like finish.

Advantages:

Lightweight, high strength, high load-bearing capacity, cost-effective, good ventilation and lighting, modern style, aesthetically pleasing, anti-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 plants, food processing facilities, and bridge construction, municipal engineering projects, and wastewater treatment environments with high corrosion resistance requirements. The selection of stainless steel grating panels is the same as that of carbon steel grating panels. Due to their unique properties, stainless steel grating panels are extensively applied in various factories both domestically and internationally.

Stainless Steel Grating Cover

Stainless steel trench grates, also known as stair tread plates, steel stair tread plates, or stair treads, are a type of stairboard used for platforms. They come in two installation methods: welded connections and bolted connections. Stair treads that are welded in place can be directly welded onto the stair beam.

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 to create various sizes to match the corresponding staircase.

Features & Applications

(1) The installation of the step board is very simple; no complex installation is 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 accumulation of dirt.

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

Grating panels

The grid plate is a type of 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 the tread plates of steel ladders. The crossbars are usually made of twisted square steel.

Grating plates are typically made of low-carbon steel Q235, with a hot-dipped galvanized finish for oxidation prevention. They can also be made of stainless steel. 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 handcrafting. Machine press welding utilizes 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 strong weld points, excellent stability, and enhanced strength. Handcrafted grating plates are first punched with holes in the flat steel, followed by inserting the crossbars and spot welding them into place. There will be gaps between the crossbars and flat steel, and it's impossible to weld every contact point, thus the welding is not as secure and the strength is somewhat reduced.

Grille plate features:

1. High strength, lightweight structure: The sturdy grid pressure-welded structure ensures high load-bearing capacity and lightness in structure.

2. Easy for hoisting and other features.

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

4. Surface luster is attractive.

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

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

Interlocking steel grating

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

Category:

Interlocking steel grating types can be divided into four categories: Interlocking steel grating classification: Differentiated by insertion methods and angles, 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 carrying 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 steel grating is a type of steel grating product formed by interlocking high-width steel bars with cross steel bars, tightly pressed into shape under 1200 tons of pressure. It is suitable for high-span, high-load-bearing applications.

3. Integrated Steel Grating Panels - The load-bearing flat steel and cross-bar flat steel of the integrated 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 does not exceed 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 slot bars are formed by slotting and locking. We can deliver grating panels with different spacings and specifications according to customer needs, using materials such as carbon steel, stainless steel, aluminum, etc. The height of the grating panels is less than 100mm.

Features: Welded steel grating panels feature robust weld points, even hole spacing, smooth surface, aesthetic and practical design, lightweight, high strength, corrosion resistance, and maintenance-free, among many other characteristics.

Usage: Widely used in civil and commercial buildings, theaters, subways, urban rail projects, and other municipal engineering fields. Suitable for ceiling installation, indoor and outdoor decoration, platform walkways, ventilation windows (wells), billboards, various covers, etc. The interlocking grid panels feature sturdy 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, more than a hundred varieties have been developed, with sixteen export products particularly favored by customers.