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JunHe
Galvanized steel grating serves as a standard flooring solution for industrial platforms, walkways, and drainage covers across manufacturing, logistics, and municipal infrastructure projects. Constructed from load-bearing flat bars and twisted cross bars welded at intersection points, this product features serrated surfaces for enhanced traction in wet or oily conditions. Hot-dip galvanized coating provides corrosion protection for outdoor and industrial environments, while the open mesh design facilitates ventilation, drainage, and weight reduction compared to solid plate flooring. JUNHE manufactures steel grating in multiple specifications to accommodate different load requirements for commercial and industrial applications.
Steel grating production uses Q235 low carbon steel as the standard material, with 304 and 316 stainless steel options available for corrosive environments. Q235 grade steel provides a balance of structural performance and cost efficiency for general industrial applications, while stainless steel variants offer extended service life in chemical processing and coastal installations.
The table below lists standard load-bearing flat bar dimensions and corresponding cross bar specifications:
Specification 303/30/100 represents a standard configuration with 30 × 3mm load-bearing bars spaced at 30mm intervals and cross bars at 100mm spacing, delivering 3.5kN/m² uniform load capacity and 3.85kN concentrated load capacity. Heavier specifications with thicker flat bars and closer spacing are available for forklift traffic and heavy equipment platforms.
Load-Bearing Flat Steel (mm) | Cross Bar (mm) | Mesh Size (mm) | Uniform Load (kN/m²) | Concentrated Load (kN) |
|---|---|---|---|---|
20 × 5 | 5 × 5 | 30 × 100 | - | - |
25 × 5 | 6 × 6 | 40 × 100 | - | - |
30 × 3 | 6 × 6 | 60 × 100 | - | - |
30 × 5 | 8 × 8 | 30 × 100 | 3.5 | 3.85 |
40 × 5 | 8 × 8 | 40 × 100 | - | - |
50 × 5 | 8 × 8 | 60 × 100 | - | - |
Hot-dip galvanizing is the standard surface treatment, with average zinc coating thickness measuring ≥ 85μm and local thickness ≥ 70μm, conforming to national galvanizing standards. Alternative surface treatments include cold galvanizing and spray painting for projects with specific requirements.
Galvanized steel grating finds application across four primary industrial sectors. In manufacturing plants, it serves as workshop flooring, equipment operation platforms, maintenance walkways, and stair treads, where the open structure supports ventilation and heat dissipation while accommodating damp and oily working conditions. For logistics warehouses, the grating functions as loading and unloading platforms, storage area flooring, and cargo support racks, with load capacities designed to handle material handling equipment and stacked goods. Municipal infrastructure projects use steel grating for sewage treatment plant platforms, sedimentation tank covers, urban drainage grates, and bridge walkways, where the galvanized coating withstands outdoor weather exposure. In power and chemical facilities, the grating forms equipment platforms, maintenance walkways, and cable trench covers, with stainless steel options available for areas exposed to chemical media.
JUNHE provides customization services for steel grating projects, including dimension adjustments, shape modifications, and load rating specifications. Fabrication drawings can be produced according to project requirements, with options for special cutouts, notches, and fastening configurations. Standard panel sizes are available from stock, while custom dimensions require production lead time based on order volume. Serrated and plain surface options are both available, along with various edge treatments and mounting accessories.
Production follows ISO 9001 quality management system procedures, with incoming material inspection, in-process welding quality checks, and final galvanizing thickness verification. Each production batch undergoes load testing sampling and zinc coating thickness measurement to verify compliance with specified parameters. Manufacturing facilities are equipped with automated welding lines and hot-dip galvanizing baths to ensure consistent product quality for large-scale commercial procurement orders.
Under normal outdoor atmospheric conditions, hot-dip galvanized steel grating can maintain structural integrity for over 20 years, based on the 85μm average zinc coating thickness. Service life varies depending on environmental factors such as humidity, chemical exposure, and abrasion levels. Chemical plant and coastal installations may experience shorter service intervals due to accelerated corrosion rates.
Dimension customization is available for length, width, mesh spacing, and load-bearing bar thickness. Load ratings can be adjusted by modifying flat bar dimensions and spacing to match specific project requirements. Customers may submit design drawings or specify load parameters for custom production.
Steel grating panels can be installed using bolt fastening or welding methods. Bolted installation allows for removable access panels, while welded installation provides permanent fixed flooring. Installation involves aligning panels with supporting structures and securing at specified intervals. Both methods require standard installation tools and can be completed by on-site construction teams.
Galvanized steel grating requires periodic visual inspections to check for coating damage, loose fasteners, and structural deformation. No regular surface treatment is required under normal operating conditions. Localized coating damage can be repaired with zinc-rich paint. Replacement of individual panels is recommended if structural damage or significant corrosion is detected during inspection.
