Hot-Dip Galvanized Steel Grating Manufacturer

Introduction to Steel Grating

Steel grating, also known as steel grate or grating panel, is made by welding 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, drain covers, and step boards. It is also employed in environmental protection equipment and wastewater treatment. Steel grating is widely used in platforms, walkways, gangways, drain covers, manholes, ladders, fences, and more across various industries such as petrochemicals, electricity, water supply, wastewater treatment, ports, construction, shipbuilding, self-propelled parking lots, municipal engineering, and environmental protection projects.

Steel Grating Plates

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 transverse bars, then welding them into a grid with square openings. It is primarily used for drain covers, steel structure platform panels, and steel staircase tread plates. The transverse bars are usually made of twisted square steel bars.

Manufacturing Process of Steel Grating: Steel grating is made by welding load-bearing flat steel and crossbars at certain intervals using a 200-ton hydraulic resistance welding automation equipment to form the original plate, then processed through cutting, drilling holes, and edging, etc., to meet customer requirements. Load-bearing Flat Steel Spacing: The spacing between adjacent load-bearing flat steels is commonly 30, 40, and 50 mm, among others. Crossbar Spacing: The distance between adjacent crossbars is usually 50, 76, 80, 100 mm, etc., and can be produced according to customer specifications. Customized steel gratings of various types are available based on customer needs.

Product Features of Steel Grating Plates:

1: High strength, light structure.

2: Excellent corrosion resistance and durability.

3: Attractive appearance, glossy surface.

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

5: Good ventilation, lighting, heat dissipation, anti-slip, and explosion-proof properties.

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, walkways, gangways, manhole covers, ladder covers, fences, and ceiling systems 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 original plate is made by welding load flat steel and crossbars at a certain spacing, then it is processed into the finished product as required by the customer through cutting, notching, drilling, and edge wrapping, etc., on a high-pressure resistance welding machine.

Galvanized steel grating is categorized into the following types:

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

2. Hot-dip galvanized steel grating is categorized by the surface shape into toothed hot-dip galvanized steel grating and flat type 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扁钢间距: 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 available upon request.

(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, light structure, and ease of hoisting; aesthetically pleasing, durable and long-lasting.

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

Hot-Dip 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, they not only offer an attractive appearance but also provide excellent corrosion and rust prevention, extending their service life, making them highly favored by customers.

Hot-dip galvanized steel grating panels feature high strength and lightweight structure; their sturdy grid weld structure offers high load-bearing capacity, lightweight design, and ease of hoisting; they also boast an attractive appearance and long-lasting durability.

Corrosion Resistance: A stable protective film forms on the zinc layer 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, manholes, covers, ladders, fences, guardrails, etc., for industries such as petrochemicals, power plants, waterworks, wastewater 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 width of over 65mm and a bearing thickness of over 6mm, with transverse bars typically made of 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 heavy load applications, suitable for airports, highways, industrial platforms, port terminals, 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 welded steel grating and heavy-duty riveted steel grating.

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

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 ribbed heavy-duty steel grating.

Due to cost considerations, we recommend using flat steel grating in most cases, and toothed heavy-duty 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 a sealed surface patterned plate. After the composite steel grating is hot-dip galvanized, it may undergo warping and deformation due to heat, especially for larger sizes, which can be difficult to level. Please pay attention to the selection of sizes. 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 typically use 3mm thick plates, but 4mm, 5mm, and 6mm plates can also be employed. The composite steel grating can be bonded with a steel mesh on its front or back to create a double-layered board, which can prevent small items from falling out. The use of this double-layered board in grain silos, dining halls, and warehouses can prevent mice 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 to the welding joints. Use steel grating installation clamps to install without damaging the galvanized layer, and it is 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 as needed. The general installation gap for steel grating is 100mm. During installation, ensure that the installation is secure and reliable, and regularly check to prevent clamps from loosening or falling off. It is recommended to weld or add rubber pads to steel grating near vibration areas.

Platform Steel Grating

Platform steel grating is a widely applicable steel grating panel product, mainly used for platforms in factories, workshops, mines, and ports. It boasts an elegant appearance, easy installation, and is a new, upgraded building material.

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. Utilize flat steel strips with different specifications than those used for 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 for frequent movement or opening.

4. Generally speaking: The welding standard for the edge of the platform steel grating is as follows: Series 1, weld one out of every five; Series 2, one out of every four; Series 3, one out of every three. The weld is a single-sided angle weld 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 strong corrosion resistance, have a neat appearance, and offer an ideal decorative effect, although 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 protected differently according to different usage environments).

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

Manufacturing Method:

There are two types: machine welding and handcrafted. Machine welding uses a high-voltage resistance welding machine, where a robotic arm automatically places the crossbar across uniformly arranged flat steel bars, welding it into the flat steel with strong electric welding power and hydraulic pressure to achieve high-quality steel grating with strong weld points, high stability, and strength. Handcrafted steel grating involves first punching holes in the flat steel, then inserting the crossbar and spot welding it into place. There will be gaps between the crossbar and flat steel, but each contact point is焊接, achieving equivalent melting connection with the flat steel and twisted steel, thus making the welding more solid and the strength slightly improved, although the appearance is not as aesthetically pleasing as 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. The finished product is 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, well-ventilated and light-transmitting, modern style, aesthetically pleasing, anti-slip, easy to clean, and simple to install.

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 projects, 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

Stainless steel channel grating, also known as stair tread plate, steel stair tread plate, or stair tread, is a type of stairboard used on platforms. It comes in two installation methods: welded connection and bolt connection. 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 side plates for the tread; more economical but not easily removable. For bolted tread plates, thicker side plates are required, with holes pre-drilled on the side plates for direct bolt installation, allowing for recyclable and reusable assembly. Customers can customize according to their actual 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 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 stepping board.

(4) Extremely easy to maintain and resistant to dirt accumulation.

Tread plates have a wide range of applications, from platforms and walkways in power plants, water treatment facilities, and other industrial settings, to municipal and environmental engineering projects. They are also extensively used on ground platforms in large venues such as cinemas, visitor platforms, and parking lots.

Grating panels

Grates are steel products formed by crossing flat steel bars at a certain spacing with crossbars,焊接成具有方形格子的中间部分. They are primarily used for drain covers, steel structure platform panels, and step plates for steel ladders. 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. 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 handcrafted. 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 pierced with holes in the flat steel, followed by inserting the crossbars and spot welding them in place. There will be gaps between the crossbars and flat steel, and it's impossible to weld every contact point, leading to less secure welding and reduced strength.

Grille panel features:

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

2. Easy for hoisting and other features;

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

4. Attractive surface luster

5. Good ventilation, lighting, heat dissipation, explosion-proof, and anti-slip properties; resists accumulation of dirt.

Grating plate 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, and more.

Insertion Steel Grating

Slotted Steel Grating: Also known as interlocking steel grating, it is manufactured from carbon steel, stainless steel, brass, and aluminum plates of specific dimensions through processes such as slotting (piercing), interlocking, welding, and finishing. This slotted steel grating 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. The product is widely used for drain covers, stair tread plates, 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 slots in the bearing flat steel, the cross-bar flat steel is pressed and locked into shape. Generally, the large processing height for standard steel grating production is 100mm. The length of the steel grating is typically less than 2000mm.

2. Heavy-duty steel grating is a type of steel grating product formed by interlocking high-width steel bars and crossbar steel bars under 1200 tons of pressure. It is suitable for high-span load-bearing applications.

3. Integrated Steel Grating Panels - The 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 bearing flat steel's depth. The height of the steel grating should not exceed 100mm. The length of the steel grating is typically less than 2000mm.

4. Sunshade Grating Panels: The load-bearing flat steel of sunshade grating panels features 30° or 45° slits, and the slotted flat steel is locked in place through pressing. We can deliver grating panels with various spacings and specifications as per your needs, utilizing materials such as ordinary carbon steel, stainless steel, aluminum, etc. The height of the grating panels is less than 100mm.

Features: The interlocking steel grating features robust weld points, uniform hole spacing, flat surface, attractive and practical design, lightweight, high strength corrosion resistance, and maintenance-free.

Application: Widely used in civil and commercial buildings, theaters, subways, city rail projects, and other municipal engineering fields. Suitable for ceiling, indoor and outdoor decoration, platforms, ventilation windows (wells), billboards, various covers, etc. The interlocking grating panels feature firm welding points, uniform hole spacing, and a smooth surface. The design is both aesthetic and practical, serving as both a utility and an art piece. Over the years, more than a hundred varieties have been developed, with sixteen export products particularly favored by customers.