Steel grating is a grid-like metal product formed by welding or pressure-locking flat bars and crossbars (such as twisted square bars) at specific intervals. Its core characteristics include high strength and load-bearing capacity, excellent ventilation, light transmission, and drainage properties, superior anti-slip performance, corrosion resistance, and ease of installation and maintenance.
It is primarily utilized in the industrial and construction sectors, serving as steel structure platform decking, walkways, stair treads, trench covers, drainage grates, access corridors, maintenance platforms, and similar applications.
Based on the manufacturing process, steel grating can be classified into pressure-welded grating, swage-locked grating, and composite grating. In terms of material, it is categorized into carbon steel (typically hot-dip galvanized) and stainless steel (such as Grade 304 or 316). Based on the shape of the flat bars, it is classified into plain type, serrated type (anti-slip), and I-bar type.
Its manufacturing process must adhere to relevant industry standards, such as China's YB/T4001 series, the United States' ANSI/NAAMM (MBG531) standards, and the United Kingdom's BS4592 standards.
To ensure safety, steel grating must be securely fastened during installation using methods such as welding or specialized mounting clips. Design loads vary depending on the specific application scenario; for instance, industrial platforms are typically designed for a uniform distributed load of 2 kN/m², maintenance platforms for 4 kN/m², and walkways for loads ranging from 3.0 kN/m² to 7.5 kN/m², depending on pedestrian traffic density.