Galvanized Grating Sizes You May Want to Know

Illustratively, the specification of the steel grating G303/30/100 can be broken down as follows: it is produced using flat steel measuring 30mm*3mm. The distance between the flat bars is 30mm, while the distance between the cross bars is 100mm.

Galvanized steel grating cover plates can be divided into the following three categories:

Series 1 (30mm spacing): Hot-dip galvanized steel gratings in this series are commonly used and find applications across various industrial fields. The center distance of the load-bearing flat steel in this series of gratings is 30mm, compliant with American standards. Within the entire series of steel gratings, they exhibit strong resistance to surface impact. They are extensively used in platforms, walkways, drainage trench covers, stairs, etc., in power plants, refineries, sewage treatment plants, granaries, chemical plants, highways, airports, docks, and more. Among these, serrated steel gratings are suitable for wet and slippery areas, especially for offshore oil drilling platforms.

Series 2 (40mm spacing): Hot-dip galvanized steel gratings in this series are economically lightweight and conform to British standards for fixed platforms, walkways, and stair specifications. In situations with smaller spans, they are the ideal choice, even under loads such as transportation equipment walkways. They can also be used for warehouse shelves, paneling for buildings, gantries, protective barriers, sunshades, and more.

Series 3 (60mm spacing): This series of hot-dip galvanized steel gratings is developed specifically for applications in the mining industry, addressing the challenge of mineral splatter on the grating surface. The grating in this series features nominal dimensions of 50*60mm for open space, allowing most splashed materials to fall through, ensuring a clean and safe surface. This product is often designated for use in the plate surfaces of crushing systems, walkways on conveyor lines, ball mills, processing plants, operation stations, and more.

galvanized grating sizes

Calculating Area and Price for Irregularly Sized Galvanized Steel Gratings:

If galvanized steel gratings have irregular dimensions involving angled cuts, arched shapes, etc., they fall into the category of irregularly shaped gratings. The production process for such irregularly shaped gratings is more complex. After producing the gratings, additional processes such as cutting angles, arcs, and edging are required. Moreover, the materials cut off during these processes cannot be fully utilized, resulting in material wastage. This inefficiency increases labor costs. The prices for irregularly sized gratings are higher compared to those for regular sizes.

Calculation of Area for Irregularly Sized Gratings:

When the user provides a drawing, the area is calculated based on the total outer dimensions indicated in the drawing, including perforations and cut sections.

In the absence of a drawing, the area is calculated as the sum of the width (W) multiplied by the length (L) of the steel grating, including perforations and cut sections.

Why are the Prices for Irregularly Sized Gratings Particularly High?

Complex Production Processes: Regular steel gratings can be directly welded after material preparation, while irregularly shaped gratings require additional processes such as cutting angles, drilling holes, and shaping arcs.

High Material Wastage: A significant portion of the cut-off material from irregularly shaped grating cannot be used, resulting in wastage.

Limited Market Demand: The usage of irregularly shaped gratings is less common, leading to lower production quantities and limited economies of scale.

Higher Labor Costs: Due to the complexity of producing irregularly shaped gratings, the production volume is low and the production time is long, leading to higher labor costs.

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