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, steel grating is primarily used in power plant platforms, parking lot platforms, maintenance platforms, drainage 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, shipyards, architectural decoration, shipbuilding, self-propelled parking lots, municipal engineering, and environmental protection engineering, for platforms, walkways, gangways, covers, manholes, ladders, and fences.

Steel Grating Plates

Also known as steel grating or grid plate, it is a type of steel product made by crossing flat steel bars at certain intervals with crossbars, then welded together to form a square grid pattern in the middle. It is primarily used for drain covers, steel structure platform panels, and steel ladder tread plates. The crossbars are typically made of twisted square steel.

Manufacturing Method of Steel Grating Plates: Steel grating plates are made by welding load-bearing flat bars and cross bars at specified intervals using a 200-ton hydraulic resistance welding automation machine to form the original plate. The plates are then processed through cutting, punching, and edging to meet customer requirements. Spacing of Load-bearing Flat Bars: The spacing between adjacent load-bearing flat bars is commonly 30, 40, 50, and other sizes. Cross Bar Spacing: The distance between adjacent cross bars is usually 50, 76, 80, 100, and other options. Custom production and ordering of various steel grating plate models according to customer specifications are available.

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 dirt accumulation, no snow or rain buildup, 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 oil and chemical industry, tobacco sector, electricity, water supply, wastewater treatment, port terminals, architectural decoration, shipbuilding, self-propelled parking lots, municipal engineering, environmental protection engineering, and various platforms such as walkways, gangways, manholes, covers, ladders, fences, large sports venues, exhibitions, large-scale commercial buildings, train stations, docks, and airports for industrial and civil building ceilings.

Hot-Dip Galvanized Steel Grating

This product is a finished good, meticulously produced by welding load steel plates and cross bars at specific intervals into a base plate on a high-pressure resistance welding machine. It undergoes deep processing, including cutting, notching, drilling, and edging, to meet customer specifications.

Hot-dip galvanized steel grating is available in the following types:

1. Hot-Dip Galvanized Steel Grating, categorized by manufacturing process into press-welded hot-dip galvanized steel grating and press-locked hot-dip galvanized steel grating.

2. Hot-dip galvanized steel grating surfaces are divided 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.

Marking Method:

(1) Hot-Dip Galvanized Steel Grating扁钢间距: Distinguished 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 upon request.

(3) Hot-Dipped Galvanized Steel Grating扁steel: Material is Q23 or stainless steel, available in regular flat type, anti-slip toothed type, and I-section cross-section. Common specifications 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, etc.

(4) Hot-Dip Galvanized Steel Grating Crossbars: 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 twisting it, with common sizes including 5*5, 6*6, 8*8mm, etc.

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

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

Hot-Dipped Galvanized Steel Grating

Hot-dip galvanized steel grating panels are one of the most commonly used products in steel grating applications, widely recognized for their aesthetic appeal. After welding and hot-dip galvanizing, they offer excellent corrosion and rust resistance, extending their service life, and are highly favored by customers.

The features of hot-dip galvanized steel grating panels are: high strength, light structure; with a sturdy grid press-welded structure, it boasts high load-bearing capacity, light structure, and ease of lifting; aesthetically pleasing, and durable.

Corrosion Resistance: The zinc layer forms a stable protective film 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, guardrails, 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 flat steel width of more than 65mm and a bearing flat steel thickness of more than 6mm. The transverse bars typically use flat steel or steel bars with diameters of 10mm or 12mm.

2. Heavy-duty steel grating applications:

Heavy-duty steel grating is designed and manufactured for applications requiring heavy loads, suitable for airports, highways, industrial platforms, port wharfs, and other special demand scenarios.

3. Heavy-duty steel grating categories:

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

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

B. Heavy-duty press-locked steel grating refers to the type with flat steel bars. It is suitable for bidirectional loading, but it is significantly more expensive than welded steel grating. Generally, it is not recommended for use.

C. Surface shapes can be categorized 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 patterned plates with a sealed surface. After hot-dip galvanizing, composite steel grating may undergo warping and deformation due to heat, especially with larger sizes, making leveling difficult. Please note the selection. The composite steel grating commonly uses Series 3 steel 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. A double mesh can be formed by welding steel mesh to the front or back of the composite steel grating, preventing small items from falling out. The use of 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, which do not damage the galvanized layer and are easy to disassemble. 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 installation gap for steel grating is generally 100mm. Ensure that the installation is firm and reliable during assembly, and check regularly to prevent the clamps from loosening or falling off. It is recommended to weld or add rubber pads to the steel grating near sources of vibration.

Platform Steel Grating

Platform steel grating is a widely applicable steel grating panel product, primarily used for platforms in factories, workshops, mines, and ports. It is aesthetically pleasing, easy to install, and represents a new generation of building products, ideal for replacement and upgrades.

Platform specialty steel grating products include:

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

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

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 platform steel grating panels is as follows: Series 1 - weld one out of every five; Series 2 - weld one out of every four; Series 3 - weld one out of every three. The welds are single-sided angular welds of not less than 3mm, with a length of 20mm.

Stainless Steel Grating

Also known as stainless steel grating panels. There are typically two methods of manufacturing: a combination of stainless steel flat bars and round bars welded together; and an interlocking design of stainless steel flat bars. They possess excellent corrosion resistance, have a neat appearance, and offer a highly desirable decorative effect, though they are generally more expensive.

Stainless Steel Grating Categories:

It can be categorized into flat, toothed, and I-type shapes, with over 200 specifications and varieties (the surface can be protected differently depending on the usage environment).

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

Manufacturing Method:

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. The crossbar is then welded into the flat steel using strong 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 with holes in the flat steel, then the crossbar is inserted and spot-welded into the holes. There will be gaps between the crossbar 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 slightly increasing the strength, although the appearance is not as aesthetically pleasing as that of the machine-welded version.

Surface Treatment:

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

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

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

Advantages:

Lightweight, high strength, high load-bearing capacity, cost-effective, ventilated and translucent, modern style, aesthetically pleasing, anti-slip, easy to clean, and simple 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 high corrosion resistance is required. The selection of stainless steel grating is the same as that of carbon steel grating. Due to its special properties, stainless steel grating is extensively utilized in various factories both domestically and internationally.

Stainless Steel Grating Covers

Stainless steel grating covers, also known as stair tread plates, steel stair tread plates, or tread plates, are a type of stairboard used on platforms. They can be installed using either welded or bolted connections, with the welded tread plates being directly welded to the stair beam.

Overview

Welded fixed tread plates, directly welded to the ladder beam; no side plates required for the tread; relatively economical but not easily removable. For bolted tread plates, thicker side plates are needed, with holes pre-drilled on the sides for direct bolt fixation, allowing for recyclable and reusable installation. Customers can customize according to their specific needs, using suitable steel grating panels to create various sizes to match the respective staircases.

Features and Applications

Step plates are extremely easy to install; no complex assembly 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 factories like power plants and water treatment plants, as well as in municipal and environmental protection projects. They are also commonly found in large venues such as theaters, visitor platforms, and parking lots.

Grating panel

Grating panels are made by crossing flat steel bars at specific intervals with crossbars,焊接成带有方形格子的 steel products, primarily used for drain covers, steel structure platform panels, and stair treads. 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 grid plates: There are two types, machine welding and handcrafted. Machine welding uses a high-pressure resistance welding machine, where robotic arms automatically place the crossbars across evenly spaced flat steel bars, then the crossbars are pressed into the flat steel using powerful welding power and hydraulic pressure, resulting in high-quality grid plates with strong weld points, excellent stability, and high strength. Handcrafted grid plates are initially 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 welds are not as secure, leading to a decrease in strength.

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

4. Attractive surface luster

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

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

Insertion Steel Grating

Interlocking Steel Grating: Also known as insert-type steel grating, it is manufactured through processes such as slotting (punching), insertion, welding, and finishing, using carbon 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 categorized: 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 carrying 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 steel grating is a type of steel grating product formed by interlocking high flange steel and crossbar flat steel, tightly pressed into shape under 1200 tons of pressure. It is suitable for high-span 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 of the load-bearing flat steel's depth. The height of the steel grating does not exceed 100mm. The length of the steel grating is usually less than 2000mm.

4. Sunshade Type Steel Grating: The sunshade type steel grating features bearing flanges with 30° or 45° bevel slots, and the slot bars are locked into place through slotting. We can deliver gratings with various spacings and specifications as per requirements, using materials such as carbon steel, stainless steel, aluminum, etc. The height of the grating is less than 100mm.

Features: The steel grating features robust weld points, uniform hole spacing, flat surface, attractive design, practicality, lightweight, high strength, corrosion resistance, and maintenance-free, among many other characteristics.

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 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.