Hot dip galvanized steel grating, as a grating product with excellent anti-corrosion performance, is widely used in power plants, chemical plants, parking lots, sewage treatment plants and other scenarios. The specifications and models need to be determined based on factors such as load-bearing requirements and installation environment. The core parameters mainly revolve around the specifications of the flat steel, grid size, and grid thickness.
As the main load-bearing component of hot-dip galvanized steel grating, the width and thickness of flat steel directly determine its load-bearing capacity. Common specifications can be divided into three categories. Among them, the lightweight load-bearing flat steel has a thinner thickness and narrower width, suitable for low load scenarios such as pedestrian walkways and balcony fences. The single square meter load-bearing capacity is at a lower level, and the common model markings will reflect the flat steel specifications, crossbar spacing, and flat steel spacing (the letters in the marking represent the grid, and the following numbers correspond to the flat steel specifications, crossbar spacing, and flat steel spacing in sequence); The thickness and width of medium-sized load-bearing flat steel are at a moderate level, suitable for medium load scenarios such as parking lots and shopping mall platforms. The load-bearing capacity per square meter is moderate, and in typical models, a reasonable spacing between horizontal bars can improve deformation resistance, making it suitable for frequent traffic areas; Heavy duty load-bearing flat steel has a thick thickness and wide width, suitable for heavy-duty scenarios such as power plant equipment platforms and port terminals. It has a high load-bearing capacity per square meter. In common models, some special scenarios may use wider and thicker flat steel, combined with an encrypted crossbar design, to meet the needs of forklifts and small cargo vehicles.
The grid size is determined by the spacing between flat steel bars and horizontal bars, and needs to be adjusted according to anti slip requirements and drainage efficiency. There are four mainstream specifications. The spacing between the flat steel bars of the large grid is relatively large, and the spacing between the horizontal bars can be selected according to the needs. It has good ventilation and drainage properties and is suitable for rainwater grates and roof platforms, which can reduce the accumulation of accumulated water. However, attention should be paid to preventing small objects from falling; The spacing between the flat steel bars in the middle grid is at a moderate level, and the spacing between the horizontal bars can be flexibly adjusted to balance load-bearing and drainage. It is suitable for pedestrian walkways and subway platforms, with better anti slip performance than large grids and less likely to get stuck in the heels of high heels. It is the mainstream choice for civilian scenarios; The spacing between the flat steel bars of the small grid is small, and the spacing between the horizontal bars can be further reduced. It has strong anti slip properties and high safety, and is suitable for stair treads and kindergarten platforms. It can effectively prevent children’s fingers or small objects from getting stuck in the grid. Some food factories and hospitals also use this specification for easy cleaning and maintenance; The spacing between the flat steel bars of the encrypted grid is the smallest, and the spacing between the horizontal bars is correspondingly reduced, with the strongest bearing capacity. It is suitable for heavy equipment platforms and maintenance walkways. When used with thick flat steel, it can withstand mechanical rolling and is commonly used in special scenarios such as chemical plant reactor platforms.
In addition to the core parameters, the thickness of the grille (i.e. the length of the flat steel) and the installation method also affect the selection of the model. In terms of grille thickness, the conventional length covers common application scenarios and can be customized according to needs. The length difference between small trench cover plates and large platform plates is significant, and transportation convenience needs to be considered when exceeding a certain length. It is recommended to splice them in sections; In terms of installation method, welding fixed grilles need to reserve welding points, and specific letters will be marked in the model to distinguish them. Bolt fixed grilles need to preset bolt holes, which also have exclusive letter markings. The latter is easy to disassemble and repair, suitable for frequent equipment maintenance scenarios.
When selecting the specifications of hot-dip galvanized steel grating, practical needs should be taken into account: for low load scenarios, lightweight flat steel with medium grid should be preferred to control costs; In heavy load scenarios, the maximum load-bearing capacity needs to be calculated, and heavy-duty flat steel with dense grids should be selected; It is recommended to reduce the spacing between horizontal bars in damp and slippery areas to improve anti slip performance. At the same time, it is necessary to confirm whether the specifications comply with industry standards, ensure that the thickness of the hot-dip galvanized layer meets the requirements, and guarantee the anti-corrosion life.
