Engineering Customization Guide | How to Choose the Right Roller Coating Plate Type ?

First , understand what the three parameters of the pattern determine.

Wave height: Determines 'how heavy it can withstand'

1. Wave height is the height of the ripples, measured in millimeters. The greater the wave height, the greater the moment of inertia of the sheet material and the stronger its bending resistance.

Wave height ≥ 35mm : Preferred for large-span roofs, purlin spacing up to 1.5 meters, suitable for industrial plants and logistics warehouses.

Wave height 20-35mm : The mainstream choice for general roofs, purlin spacing 0.8-1.2 meters, suitable for commercial buildings and office buildings.

Common selection mistake: focusing only on thickness and ignoring wave height. A board with a thickness of 0.8mm and a wave height of 15mm has a much lower load-bearing capacity than a board with a thickness of 0.6mm and a wave height of 35mm.

2. Wavelength: Determines whether the surface will dent when stepped on.

Wavelength is the distance between two adjacent wave crests. The smaller the wavelength, the denser the corrugations, and the higher the local stiffness of the sheet material.

Wave pitch ≤ 100mm : Good local stiffness, dense corrugations, suitable for roofs requiring frequent maintenance.

Wavelength 100-150mm : Standard design, balancing load-bearing capacity and material utilization.

Common selection mistakes: Focusing only on effective width (larger wave pitch → larger effective width → less material), while ignoring local stiffness. Although plates with a wave pitch of 150mm or more have high material utilization, they are prone to denting when stepped on.

3. Effective width: Determines how fast the installation will be.

The effective width is the actual width covered after the board is installed. The effective width is the original board width minus the overlap portion.

Effective width ≥ 900mm : Fast installation speed, fewer panels required, suitable for rapid construction over large areas.

Effective width 750-900mm : Standard design, balancing installation efficiency and structural performance.

Common selection mistakes: sacrificing wave height and wave pitch in pursuit of a large effective width. Although the 900 type has a large effective width, its wave height is only 15mm, resulting in weak load-bearing capacity and making it unsuitable for large-span roofs.

II . Comparison of Mainstream Panel Type Parameters and Applicable Scenarios

Model 750: The 'mainstay' of large-span factory buildings

Wave height: 35mm Wavelength: 125mm Effective width: 750mm Applicable purlin spacing: 1.2-1.5 meters

This is the first choice for large-span industrial plants and logistics warehouses. It has a high wave height and strong bending resistance, and can still guarantee sufficient load-bearing capacity even with a purlin spacing of 1.5 meters.

Model 840: The Market's 'All-Purpose'

Wave height: 24mm Wavelength: 210mm Effective width: 840mm Applicable purlin spacing: 0.8-1.2 meters

This is the mainstream model on the market and also the most widely applicable panel type. With a moderate wave height and reasonable effective width, it can be used for both roofs and walls. It is suitable for general industrial plants, commercial buildings, and office buildings.

Type 836 corrugated roofing sheets: the 'face value' of residential buildings.

Wave height: 18mm Wavelength: 76mm Effective width: 836mm Applicable purlin spacing: 0.8-1.0 meters

With rounded crests and a soft appearance, it is suitable for residential and villa projects. Its small wave pitch and dense corrugations provide good local rigidity—making it less prone to denting when stepped on.

III. Matching Relationship between Thickness and Purlin Spacing

Thicker is not always better. The appropriate thickness depends on the purlin spacing.

The proper approach is to select the thickness based on the purlin spacing, rather than blindly increasing the thickness. Investing in denser purlins often yields better results than simply increasing the thickness of the boards.

IV . Understanding Page Layout Configurations for Different Project Types in One Table

V. Summary: The Core Logic of Pattern Selection

The choice of pattern is not simply a matter of 'looking at it and that's fine', but rather the result of engineering calculations.

The core logic is a chain: purlin spacing → wave height → thickness . Purlin spacing determines the minimum wave height requirement, wave height determines the load-bearing capacity, and thickness determines the safety margin.

What can DIXXIN do for you?

Advantage 1: Review the drawings first, then provide the design plan.

DIXXIN doesn't just sell you whatever you want; instead, it first understands your project parameters—purlin spacing, slope, wind pressure, snow load—and then provides targeted board type suggestions .

Advantage 2: Provides a load-bearing capacity calculation table

DIXXIN can provide load-bearing capacity calculations for the boards based on your project parameters, including safe purlin spacing, permissible foot traffic conditions, and wind resistance.

Advantage 3 : Contracts clearly define technical standards

DIXXIN is willing to clearly specify the plate type parameters, allowable deviations, and load-bearing capacity in the contract. With everything in black and white, both parties will feel at ease.

If you are selecting a roll coating plate type for your engineering project, please contact us for targeted selection advice and technical parameter tables.