The heavy-duty hot-dip galvanized steel grating refers to the steel grating with a bearing flat steel width greater than 65mm and a bearing flat steel thickness greater than 6mm. The cross bar is generally flat steel or a steel bar with a diameter of 10 mm or 12 mm. After the surface is hot-dip galvanized, it can be used strongly. Heavy-duty hot-dip galvanized steel grating is specially planned and manufactured for heavy-duty occasions, and is suitable for occasions with special needs such as airports, highways, industrial routes, and port terminals. Heavy-duty hot-dip galvanized steel grating can be divided into heavy-duty pressure-welded steel grating and heavy-duty pressure-locked steel grating according to the production process. Heavy-duty hot-dip galvanized steel grating refers to the steel grating with steel bars selected for cross bars, which is suitable for one-way load occasions. Heavy-duty pressure lock steel grating refers to the selection of horizontal bars with flat steel for steel grating. Suitable for bi-directional load cases. However, the cost of heavy-duty pressure-welded steel grating is much higher, and we do not recommend choosing it under normal circumstances. According to the surface shape, it can be divided into plane type heavy duty steel grating and tooth type heavy duty steel grating. In view of the cost factor, we recommend the use of flat steel gratings under general conditions, and tooth-shaped heavy-duty steel gratings for non-slip occasions such as offshore oil drilling routes. Due to the special nature of heavy-duty hot-dip galvanized steel grating, we generally advocate that customers inform them of their load requirements and support conditions, and we will choose them as the economical and reasonable standards for customers. The welding deformation of the steel grating not only affects the appearance of the product, but also cannot be used in severe cases. When welding is affected by installation, an appropriate installation sequence of weldments should be selected to prevent excessive installation stress on the entire assembly. Due to the rigidity of the installation body and the change of the center of gravity at different installation stages, the welded part of the steel grating will generate stress after installation. Improper handling of the installation and welding sequence will directly affect the welding quality. In addition, new residual stresses may be generated during the installation of stainless steel gratings. If the new residual stress is greater than the critical deformation stress, the weldment will deform. Therefore, mounting stress should be minimized or prevented as much as possible. The influence of weld size is related to the welding of stainless steel gratings. The welding scale is closely related to the zigzag deformation of the steel grating weldment. The orientation of the weld seam in the structure will also affect the welding deformation of the stainless steel grating. Asymmetric placement will lead to zigzag deformation of the weldment. The closer the neutral steel grating weldment axis is to the weld, the smaller the zigzag deformation; conversely, the farther the weldment section neutral axis is from the weld, the greater the zigzag deformation.
https://www.topsteelgrating.com/
