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 lot platforms, maintenance platforms, manhole covers, and tread plates. It is also used in environmental protection equipment and wastewater treatment. Steel grating is widely applied in various fields such as petrochemicals, electricity, water supply, wastewater treatment, port terminals, architectural decoration, shipbuilding, self-propelled parking lots, municipal engineering, and environmental sanitation projects, for platforms, walkways, gangways, covers, manholes, ladders, fences, and more.

Steel Grating Plate

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

Manufacturing Method of Steel Grating Panels: Steel grating panels are made by arranging load-bearing flat bars and crossbars at certain intervals and then welding them together using a 200-ton hydraulic resistance welding automation system to form the original plate. The panels are then processed through cutting, punching, and edging to meet the customer's requirements. Spacing of Load-bearing Flat Bars: The spacing between adjacent load-bearing flat bars is typically 30, 40, and 50, among others. Spacing of Crossbars: The distance between adjacent crossbars is usually 50, 76, 80, 100, and more, and can be produced according to customer specifications, with customized steel grating panels of various models available upon request.

Product Features of Steel Grating Plates:

1: High strength, lightweight structure.

Corrosion-resistant with long-lasting durability.

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, non-slip, and explosion-proof properties.

Easy to install and dismantle.

Product Application: Widely used in the petrochemical, tobacco, power, water supply, wastewater treatment, port and dock, construction decoration, shipbuilding, self-propelled parking lots, municipal engineering, and environmental protection engineering fields, including platforms, walkways, gangways, manholes, covers, ladders, 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 made through deep processing, including cutting, notching, punching, and edging, from a base plate that is焊接 using a high-pressure resistance welding machine. The base plate is constructed by arranging load steel strips and crossbars at a certain spacing in a warp and weft pattern.

Hot-dip galvanized steel grating is available in 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 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 flat steel spacing: Differentiated by series: Series 1 is 30mm; Series 2 is 40mm; Series 3 is 60mm.

(2) Hot-Dipped Galvanized Steel Grating Crossbar Spacing: Series 1 is 100mm, Series 2 is 50mm. Other specifications are available upon request.

(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: Made from round steel, twisted square steel, square steel, or hexagonal steel of material Q23 or 304 stainless steel. Twisted square steel is produced by drawing through square molds from round wire and twisting it, with common specifications 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, light structure, and ease of hoisting; aesthetically pleasing and durable.

Hot-Dip Galvanized Steel Grating Applications: Widely used in platforms, walkways, gangways, manhole covers, ladder covers, fences, railings, and more in the fields of petrochemical, 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 highly popular product with wide applications in steel grating. After welding and hot-dip galvanizing treatment, they not only offer an attractive appearance but also provide excellent corrosion and rust prevention, extending their service life significantly, thus enjoying great customer trust and reliance.

The features of hot-dipped galvanized steel grating plates include: high strength, lightweight structure; the sturdy grid pressure welding structure provides high load-bearing capacity, light structure, and easy handling for hoisting; aesthetically pleasing, and durable.

Corrosion Resistance: Forms a stable protective film 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., 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 grate introduction:

Heavy-duty steel grating refers to the type with load-bearing flange steel width over 65mm and thickness over 6mm, with crossbars typically made of flange 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 applications requiring heavy loads, suitable for airports, highways, industrial platforms, port wharfs, and other special needs.

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 steel grating with reinforcing bars as cross bars, suitable for one-way loading applications.

B. Heavy-duty pressed steel grating refers to grating with flat steel bars, suitable for bidirectional loading. 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 drilling platforms.

Composite steel grating

This product is composed of steel grating with certain transverse bearing capacity and a sealed surface with embossed patterns. After the composite steel grating is hot-dipped galvanized, it may develop warping and deformation due to heat, especially with larger-sized steel grating, which can be difficult to level. Please note the selection of the model. The composite steel grating commonly uses Series 3 grating as the base, but Series 1 or Series 2 can also be used. The embossed steel grating typically uses 3mm thick plates, but 4mm, 5mm, or 6mm plates can also be utilized. The composite steel grating can be reinforced with a steel mesh on the front or bottom side to form a double-layered panel, which prevents small items from falling out. Using this double-layered panel in granaries, 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 without damaging the galvanized layer, and 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 for fastening can be provided upon request. The installation gap for steel gratings is generally 100mm. Ensure the installation is secure and reliable during assembly, and regularly check to prevent the clamps from loosening or falling off. It's best to weld or add rubber pads to the steel grating near vibration.

Platform Steel Grating

Platform steel grating is a versatile steel grating product with a broad range of applications. It is primarily used in various platforms within factories, workshops, mines, and ports, offering aesthetic appeal, ease of installation, and is a new type of building product that replaces the old ones.

Platform specialty steel grating products include:

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

2. Use flat steel strips of a different specification for the edge of the steel grating, or use angle steel, channel steel, square tubes, etc., for edging.

3. Handles and hinges can be installed on the platform steel grating panels for 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 weld is a single-sided angle weld 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 flat bars with stainless steel round bars; the other is an interlocking design using stainless steel flat bars. They offer excellent corrosion resistance, a clean appearance, and a very desirable 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 protected differently depending on the usage environment).

Material: Typically 304, 316, 316L stainless steel grades 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 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, 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. After heat treatment and polishing, the product undergoes electrochemical polishing, followed by chrome plating, resulting in a mirror-like finish.

Advantages:

Lightweight, high-strength, high-load capacity, cost-effective, ventilated and translucent, modern style, aesthetically pleasing, anti-slip, easy to clean, and 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 plants, 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 unique properties, stainless steel grating panels are extensively applied 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 for platforms. They come in two installation methods: welded joints and bolted joints. Tread plates 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 on the side plates for direct bolt installation, allowing for reuse and recycling. Customers can customize according to their specific needs, using suitable steel grating materials to fabricate 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 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 factories such as power plants and water treatment plants, as well as on platforms and walkways in municipal engineering and environmental protection projects. They are also commonly found on ground platforms in large venues like theaters, visitor platforms, and parking lots.

Grating panel

The grating is made by crossing flat steel bars at specific intervals with crossbars, then welded into a steel product with square openings in the center. It is primarily used for drain covers, steel structure platform panels, and steps for steel ladders, etc. 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 pressed welding and handcrafted. Machine pressed welding utilizes a high-pressure resistance welding machine, where a robotic arm automatically places the crossbars across uniformly arranged flat steel bars. The powerful 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 first involve punching holes into the flat steel, followed by inserting the crossbars and spot-welding them. There will be gaps between the crossbars and flat steel, and it's not feasible to weld every contact point, so the welding is not as secure, leading to a decrease in strength.

Grille plate features:

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

2. Easy for hoisting and other features;

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

4. Surface is smooth and glossy.

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, and food processing.

Connector steel grating

Interlocking Steel Grating: Also known as Insert-type Steel Grating, it is manufactured through processes such as slotting (punching), interlocking, welding, and finishing, using plain carbon flat steel, stainless steel, brass plate, and aluminum plate of certain sizes. The interlocking steel grating combines the high strength, corrosion resistance, and maintenance-free features of standard steel grating with a uniform structure that is lightweight, elegant, harmonious, and tastefully designed. This product is widely used for drain covers, stair treads, and pond covers.

Category:

Four types of interlocking steel grating can be categorized as follows: 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 slots 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 grid panels are a type of steel grating product formed by high flat steel and crossbar flat steel interlocking and tightly pressed into shape under 1200 tons of pressure. They are suitable for high-span and heavy-load applications.

3. Integral Steel Grating Panels - The bearing flat steel and cross flat steel of the integral steel grating panels have the same height and a groove depth of half that of the bearing flat steel. The height of the steel grating does not exceed 100mm. The length of the steel grating is typically less than 2000mm.

4. Sunshade Type Interlocking Steel Grating: The load-bearing flat steel of the sunshade type interlocking steel grating features 30° or 45° slits, with the slot bars locked in place by pressing the slits. We can deliver grating panels with different spacings and specifications as per your requirements, available in materials such as carbon steel, stainless steel, aluminum, etc. The height of the grating panels is less than 100mm.

Features: The interlocking steel grating features strong weld points, evenly spaced holes, smooth surface, attractive design, practicality, lightweight, high strength, corrosion resistance, and maintenance-free, among many other attributes.

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), billboard signs, various covers, etc. The interlocking grill panels feature firm welding points, uniform hole spacing, and a flat surface. The design is both aesthetic and practical, serving as both a utility and an artwork. Over the years, more than a hundred varieties have been developed, with sixteen export products particularly favored by customers.