Galvanized Steel Grating Manufacturer

Introduction to Steel Grating

Steel grating, also known as steel grid or grating panel, 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 lot platforms, maintenance platforms, trench 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, port terminals, architectural decoration, shipbuilding, self-propelled parking lots, municipal engineering, and environmental sanitation projects, including platforms, walkways, gangways, trench covers, manholes, ladders, and fences.

Steel Grating Plate

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

Manufacturing Method 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. The panels are then processed through cutting, punching, and edging, etc., to meet the customer's requirements. Load-bearing Flat Steel Spacing: The spacing between two adjacent load-bearing flat steels is commonly 30, 40, 50, and other sizes. Crossbar Spacing: The distance between two 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 panel models based on customer needs.

Product Features of Steel Grating Plates:

1: High strength, lightweight structure.

2: Strong 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, lighting, heat dissipation, anti-slip, and explosion-proof properties are excellent.

6: Easy to install and disassemble.

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, walkways, gangways, manholes, covers, ladders, fences, large sports venues, exhibitions, large-scale commercial buildings, stations, docks, airports, and other industrial and civil buildings for ceiling installations.

Hot-Dip Galvanized Steel Grating

The product is a finished item, meticulously processed from a base plate made by welding load flat steel and crossbars at specific intervals, followed by deep processing steps such as cutting, notching, punching, and edging to meet customer specifications.

Galvanized steel grating is available in the following types:

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

2. Hot-dip galvanized steel grating surfaces are categorized 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: 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 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 include: 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, manhole covers, ladder covers, fences, guardrails, etc., in fields such as petrochemicals, power plants, waterworks, sewage treatment plants, municipal engineering, and environmental protection engineering.

Hot-Dip Galvanized Steel Grating

Hot-dip galvanized steel grating panels are one of the most commonly used products in steel grating applications, widely utilized due to their attractive appearance and excellent corrosion and rust prevention, which also extends their service life, making them highly favored by 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 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, guardrails, and more, across industries such as petrochemical, power plants, waterworks, wastewater treatment plants, municipal projects, and environmental protection engineering.

Heavy-duty steel grating

1. Heavy-duty steel grating introduction:

Heavy-duty steel grating refers to steel grating with a load-bearing flat steel width of more than 65mm and thickness of more than 6mm. The transverse bars typically use 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 applications requiring heavy loads, suitable for airports, highways, industrial platforms, ports and docks, as well as other specialized 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 welded steel grating and heavy-duty riveted steel grating.

A. Heavy-duty pressure-welded steel grating refers to grating with steel bars as cross bars, suitable for single-direction loading applications.

B. Heavy-duty pressed steel grating refers to grating with flat steel bars. It is suitable for bidirectional loading but 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 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 cross-bearing capacity and patterned plates with a sealed surface. After hot-dip galvanizing, composite steel grating may experience warping and deformation due to heat, especially for larger sizes, which can be difficult to level. Please note the selection of sizes. The common series for the base plate of composite steel grating is Series 3, 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. By welding steel mesh to the front or back of the composite steel grating, a reinforced mesh board is created, which can prevent small items from falling out. The use of reinforced mesh boards in grain silos, dining rooms, 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 at the welding joints. Use steel grating installation clamps for assembly without damaging the galvanized layer, and it's easy to disassemble. Each set 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 the installation is firm and reliable during assembly, and regularly check to prevent the clamps from loosening and falling off. It is recommended to weld or add rubber pads to the steel grating near vibration sources.

Platform steel grating

Platform steel grating is a widely applicable steel grating panel product, mainly used for various platforms in factories, workshops, mines, and ports. It boasts an elegant appearance, easy installation, and is a new generation of building products, perfect for replacement.

Platform specialty steel grating products include:

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

2. Use flat steel strips with different specifications from those on the steel grating, or use angle steel, channel steel, square tubes, etc., for edging.

3. Handles and hinges can be installed on platform steel grating panels that need 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; Series 2 - weld one out of every four; Series 3 - weld one out of every three. The welds are single-sided angular welds not less than 3mm in width, 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 involves interlocking stainless steel flat bars. They offer 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 types, with over 200 specifications and varieties (the surface can be protected differently depending on the application environment).

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

Manufacturing Method:

There are two types: machine press welding and handcrafted. Machine press welding uses 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 welding power and hydraulic pressure, resulting in a high-quality steel grating with strong weld points, excellent stability, and high strength. Handcrafted steel gratings first punch holes in the flat steel, then insert the crossbar and spot weld it, leaving a gap between the crossbar and flat steel. However, each contact point is焊接, achieving an equivalent melting connection between the flat steel and the twisted steel, making the welds more solid and slightly increasing the strength. Yet, the appearance is not as aesthetically pleasing as the machine press welding.

Surface Treatment:

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

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

c. After heat treatment and polishing, the finished products undergo electrochemical polishing followed by chrome plating, achieving a mirror-like finish.

Advantages:

Lightweight, high strength, high load-bearing capacity, cost-effective, well-ventilated and illuminated, 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 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 unique properties, stainless steel grating panels are extensively applied in various factories both domestically and internationally.

Stainless Steel Grating Cover Plates

Stainless steel channel gratings, also known as stair tread plates, steel stair tread plates, and step plates, are a type of stair tread used for platforms. They are available in two installation methods: welded connection and bolted connection. The welded tread plates can be directly welded to the stair beam.

Overview

Welded fixed tread plates, directly welded to the ladder beam, without the need for additional side plates for the tread. More economical in cost 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 & Applications

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

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

Step plates feature high strength, lightweight structure, and durability.

(4) Extremely easy to maintain and prevents accumulation of dirt.

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

Grating panels

Grating panels are steel products formed by crossing flat steel bars at a certain spacing with crossbars, welded together to create a square-grid pattern in the center. They are primarily used for drain covers, steel structure platform panels, and steps for steel ladders. The crossbars are typically made of twisted square steel.

Grating panels are typically made of low-carbon steel Q235, 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 panels: There are two types, machine pressed welding and handcrafted. Machine pressed welding utilizes a high-pressure resistance welding machine, where a robotic arm automatically places the crossbars evenly over flat steel strips, then the powerful welding power and hydraulic pressure weld the crossbars into the flat steel, resulting in high-quality grating panels with strong weld points, excellent stability, and strength. Handcrafted grating panels are first punched with holes in the flat steel, then the crossbars are inserted and spot-welded into the holes. 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 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 luster is attractive.

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

Grille panel applications: Widely used in various industries such as petrochemicals, municipal engineering, port engineering, machinery industry, power plants, waterworks, iron and steel industry, manufacturing, food processing, and more.

Steel Grating Fitting

Interlocking Steel Grating: Also known as insert-type steel grating, it is manufactured through processes such as slotting (piercing), insert fitting, welding, and finishing, using plain carbon flat steel, stainless steel, brass plate, and aluminum plate of specific dimensions. 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: Classification of interlocking steel grating: Differing by insertion methods and angles, they include pressed steel grating, heavy-duty steel grating, integral steel grating, and sunshade curtain steel grating, etc.

1. Press Lock 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 steel grating is usually less than 2000mm.

2. Heavy-duty steel grating is a type of steel grating product made by interlocking high flange steel with crossbar flange steel, which is tightly formed under 1200 tons of pressure. It is suitable for high-span load-bearing applications.

3. Integral Steel Grating Panels - The load-bearing flat steel and cross-bar flat steel of the integral 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 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° bevel grooves, and the groove bars are locked into shape with slots. We can deliver grating panels with different spacings and specifications as per requirements, using 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 welding 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. It can be used for ceiling, indoor and outdoor decoration, platforms, ventilation windows (wells), billboards, various covers, etc. The interlocking grating panels have firm welding points, uniform hole spacing, and a flat surface, with an aesthetically pleasing and practical design. They are both utility and art pieces. Over the years, hundreds of varieties have been developed, and sixteen exported products are particularly favored by customers.