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 cost-effective compared to other products, steel grating is primarily used in power plant platforms, parking lots, maintenance platforms, drain 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, self-propelled parking lots, municipal engineering, and environmental sanitation projects, for platforms, walkways, gangways, drain covers, manholes, ladders, fences, and more.

Steel Grating Plate

Also known as steel grating or grate, it is a type of steel product made by crossing flat steel bars at specific 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 steps for steel ladders. The crossbars are typically made of twisted square steel.

Manufacturing Method of Steel Grating Plates: Steel grating plates are made by arranging load-bearing flat steel and crossbars at a certain spacing, 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 meets the customer's requirements. Spacing of Load-bearing Flat Steel: The spacing between adjacent load-bearing flat steels is commonly 30, 40, 50, and other sizes. Spacing of Crossbars: The distance between adjacent crossbars is typically 50, 76, 80, 100, and other sizes, which can be produced according to customer specifications and customized to various steel grating plate models based on customer needs.

Product Features of Steel Grating Plates:

1: High strength, lightweight structure.

2: Excellent corrosion resistance, durable in use.

3: Attractive appearance, 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 dismantle.

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, as well as walkways, gangways, manhole covers, ladder covers, fences, and ceilings for 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 item, meticulously processed from a base plate焊接 using load flat steel and cross bars, arranged at a certain spacing, on a high-voltage resistance welding machine. It undergoes deep processing including cutting, notching, punching, and edging to meet customer specifications.

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

1. Hot-Dipped Galvanized Steel Grating, categorized by manufacturing process, includes pressure-welded hot-dipped galvanized steel grating and press-locked hot-dipped 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-dip galvanized steel grating and composite hot-dip galvanized steel grating.

Identification Method:

(1) Hot-dip galvanized steel grating:扁钢间距 varies 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 Crossbars: Made of round steel, twisted square steel, square steel, or hexagonal steel with material of Q23 or 304 stainless steel. Twisted square steel is produced by drawing through square dies from round wire and twisting, 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, light structure, and ease of hoisting; aesthetically pleasing and durable.

Hot-Dipped Galvanized Steel Grating Applications: Widely used in platforms, walkways, gangways, manhole covers, grates, ladders, fences, guardrails, and more in the fields of petrochemical, power plants, waterworks, wastewater treatment plants, municipal engineering, and environmental protection projects.

Hot-Dip Galvanized Steel Grating

Hot-dip galvanized steel grating is a highly popular product with wide applications in steel grating. After welding and hot-dip galvanizing, it boasts an aesthetically pleasing appearance and excellent corrosion and rust prevention, extending its service life. It is greatly favored by our customers.

The features of the hot-dip galvanized steel grating plates are: high strength, light structure; the sturdy grid press welding structure offers high load-bearing capacity, light structure, and ease of lifting; aesthetically pleasing, and durable.

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, grates, ladders, fences, guardrails, etc., for 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 the type with bearing flange steel width over 65mm and thickness over 6mm, typically featuring crossbars made of 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 heavy load applications, suitable for airports, highways, industrial platforms, ports, and docks, as well as other special requirements.

3. Heavy-duty steel grating categories:

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 weldmesh is steel grating with steel bars as transverse bars, suitable for unidirectional load-bearing conditions.

B. Heavy-duty pressed 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 situations and heavy-duty toothed steel grating for anti-slip applications such as offshore oil drilling platforms.

Composite steel grating

This product is composed of steel grating with certain cross-bearing capacity and patterned steel plates with a sealed surface. After hot-dip galvanizing, composite steel grating may experience warping and deformation due to heat, especially with larger-sized steel gratings, which can be challenging to flatten. Please note the selection of size. 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 chosen. A double mesh can be formed by welding steel mesh to the front or back of the composite steel grating, which prevents small items from falling out. The use of double mesh in grain silos, dining areas, and warehouses can prevent the entry of rodents 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, and the disassembly is convenient. 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 as needed. The general installation gap for steel grating is 100mm. Ensure the installation is secure and reliable during installation, and regularly inspect to prevent the clamps from loosening or falling off. It is best to weld or add rubber pads to steel grating near vibration.

Platform steel grating

Platform steel grating is a widely applicable steel grating panel product, ideal for various platforms in factories, workshops, mines, and ports. It boasts an elegant appearance, is easy to install, and represents a new generation of building materials, perfect for updating and replacing old ones.

Platform specialty products include: steel grating panels.

1. Kick plates (edge plates), patterned board guards, and installation accessories such as connecting parts can be additionally welded around the steel grating.

2. Utilize flat steel strips with different specifications than those used for the steel grating edges, 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 not less than 3mm thick, with a length of 20mm.

Stainless Steel Grating

Also known as stainless steel grating panels. There are usually two methods of production: a combination of stainless steel flat bars and round bars焊接; and interlocking stainless steel flat bars. They possess strong corrosion resistance, a clean appearance, and a highly desirable decorative effect, but 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 protected differently depending on the usage environment).

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

Manufacturing Process:

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 uniformly arranged flat steel bars. The crossbar is then pressed 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 pierced on the flat steel, followed by inserting the crossbar and spot welding it into the holes. There will be gaps between the crossbar and 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. However, the appearance is not as aesthetically pleasing as that of machine welding!

Surface Treatment:

After pickling and passivation, the surface is semi-glossy gray-white.

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

c. After heat treatment and polishing, the product is electrochemically polished and then chrome plated, achieving a mirror-like finish.

Advantages:

Lightweight, high strength, large load-bearing capacity, cost-effective, ventilated and translucent, modern style, aesthetically pleasing, non-slip, easy to clean, simple installation.

Usage:

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 critical. 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

Stainless steel trench grates, also known as stair tread plates, steel stair tread plates, and tread plates, are a type of stair tread used on 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 welded to the ladder beam; no need for additional side plates for the tread plates, offering a more economical solution. However, they are not easily removable. Tread plates secured with bolts require thicker side plates, with holes pre-drilled for installation, which can be directly fastened with bolts and reused. Customers can customize according to their specific needs, using suitable steel grating panels to create various sizes to match the corresponding staircase.

Features & Applications

Step plates are extremely easy to install; no complex assembly is required.

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

(3) High strength, lightweight, and durable treads.

(4) Extremely easy maintenance and anti-fouling.

Tread plates find extensive use in a variety of 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 panel

The grid plate is made by crossing flat steel bars at a certain spacing with crossbars and welded into a steel product featuring square grids in the middle. It is primarily used for drain covers, steel structure platform panels, and stair tread panels. The crossbars are usually 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 for fabrication. Steel grating panels offer ventilation, lighting, heat dissipation, anti-slip, and explosion-proof properties.

Manufacturing Methods of Grating Plates: There are two methods, machine welding and handcrafted. Machine welding utilizes a high-pressure resistance welding machine, where robotic arms automatically place the crossbars across uniformly arranged flat steel bars, then the strong welding power and hydraulic pressure weld the crossbars into the flat steel, resulting in high-quality grating plates with solid weld points, excellent stability, and strength. Handcrafted grating plates involve pre-punching holes in the flat steel, followed by inserting the crossbars and spot-welding them in place. There will be gaps between the crossbars and the flat steel, and it's impossible to weld every contact point, thus the welding is not as secure and the strength is reduced.

Grille panel features:

1. High strength, light structure: The robust grid pressure-welded structure ensures high load-bearing capacity and a lightweight structure.

2. Easy for hoisting and other features.

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

4. Surface appearance is glossy and aesthetically pleasing.

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

Grating plates applications: 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, etc.

Insertable Steel Grating

Connector Steel Grating: Also known as 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. This product combines the high strength, corrosion resistance, and maintenance-free features of ordinary steel grating, with a uniform structure that is lightweight, elegant, harmonious, and tastefully designed. It 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, 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 steel grating is a product formed by interlocking high flange steel and crossbar steel under 1200 tons of pressure, creating a tightly fitted pattern. It is suitable for high-load-bearing spans.

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 Interlocking Steel Grating: The bearing flat steel of the sunshade interlocking steel grating has 30° or 45° bevel grooves, and the groove bar flat steel is pressed and locked into shape. We can deliver grating panels with different spacings and specifications as per requirements, and these can be made from materials such as carbon steel, stainless steel, aluminum, etc. The height of the grating panels is less than 100mm.

Features: The steel grating features robust weld points, uniform hole spacing, flat surface, aesthetically pleasing design, practicality, 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 installation, indoor and outdoor decoration, platform walkways, ventilation windows (wells), billboard signs, and various covers. The interlocking grill plates feature firm weld points, uniform hole spacing, and a flat 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, and sixteen exported products have been highly favored by customers.