Hot-Dip Galvanized Steel Grating
The product is a finished item, which is deep-processed from a base plate made by welding load flat steel and crossbars at certain intervals into a grid pattern on a high-pressure resistance welding machine, followed by cutting, beveling, punching, and edge wrapping as per customer specifications.
Galvanized steel grating is available in the following types:
1. Hot-Dip Galvanized Steel Grating, categorized by manufacturing process into pressure-welded hot-dip galvanized steel grating and pressure-locked hot-dip galvanized steel grating.
2. Divided into toothed hot-dip galvanized steel grating and flat hot-dip galvanized steel grating according to the surface shape of the 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steel spacing: 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 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-Dipped Galvanized Steel Grating Crossbars: Made from round steel, twisted square steel, square steel, or hexagonal steel with material grades of Q23 or 304 stainless steel. Twisted square steel is formed by drawing through square molds from round steel bars 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.
Hot-Dip Galvanized Steel Grating Applications: Widely used in platforms, walkways, bridges, manholes, covers, ladders, fences, and guardrails in the fields of petrochemicals, power plants, waterworks, sewage treatment plants, municipal engineering, and environmental protection projects.
Stainless Steel Grating
Also known as stainless steel grating panels. There are usually two methods of production: combining and welding stainless steel flat bars and round bars; and interlocking stainless steel flat bars. They possess strong corrosion resistance, a clean appearance, and a highly desirable decorative effect, but are generally priced higher.
Stainless Steel Grating Categories:
It is available in flat, toothed, and I-shaped designs, with over 200 specifications and varieties (the surface can be treated with different protective coatings depending on the usage environment).
Material: Typically, stainless steel grades 304, 316, 316L are used.
Manufacturing Process:
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 horizontally on evenly arranged flat steel bars, welding 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 first punch holes in the flat steel, then insert the crossbar and spot-weld it into the holes. There will be gaps between the crossbar and the flat steel, but every contact point is welded, achieving equivalent melting connection with the flat steel and twisted steel, making the welding more solid and slightly enhancing the strength. However, 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 capacity, cost-effective, well-ventilated and light-transmitting, modern style, aesthetically pleasing, non-slip, easy to clean, simple installation, durable.
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.
