Trench Grating – Heavy Duty Drainage Cover
Product Introduction
Trench grating is a high-strength load-bearing cover designed for drainage channels, roadside gutters, industrial sumps, and commercial plaza drainage systems. Manufactured using electro-forge welding to fuse load bars and cross rods into a rigid one-piece panel, the open grid structure allows water and debris to flow freely into the trench while withstanding foot, forklift, and even heavy vehicle traffic. All products are engineered in compliance with AS3996 (Australian Standard for grates and covers for drainage systems), ensuring an optimal balance between hydraulic capacity, load rating, and slip resistance.
Typical Applications
- Municipal roadside gutters, pedestrian drainage channels
- Industrial factory floor drains, equipment wash bays
- Parking lots, fuel stations, car wash drainage systems
- Airport aprons, port container yards
- Commercial plazas, park walkways, landscape drainage
Product Specifications
| Product Type | Trench Grating – Heavy Duty Drainage Cover |
|---|---|
| Materials | Hot-dip galvanised mild steel, Stainless Steel 304 & 316 |
| Load Ratings | Class A (pedestrian) to Class H (heavy truck/airport) |
| Load Bar Depth | 25mm to 100mm |
| Open Area | 40%–60% for rapid drainage |
| Panel Size | Custom-cut to trench width (single or dual panels available) |
| Surface Type | Plain or Serrated (notched) – anti-slip options |
| Manufacturing | Electro-forge welding (load bars and cross rods fused into rigid one-piece panel) |
| Standard | AS3996:2018 Compliant – Australian Standard for grates and covers for drainage systems |
| Finish | Hot-dip galvanised (standard); Stainless Steel 304/316 for coastal or chemical environments |
| Configuration | Single or dual panels, hinged or lockable designs for under-grate cleaning access |
Key Features & Benefits
High Flow Capacity, Reduced Clogging
Open area typically 40%–60% enables rapid drainage of stormwater or industrial effluent. Grid openings allow leaves, gravel, and debris to pass through, minimizing sediment buildup in the channel.
Wide Load Ratings – From Pedestrian to Heavy Truck
Available from Class A (pedestrian) to Class H (heavy truck/airport). Load bar depths from 25mm to 100mm. Suitable for sidewalks, parking lots, container terminals, and more.
AS3996 Compliant for Safety
Design, manufacturing, and testing follow AS3996:2018 – covering load capacity, impact resistance, slip resistance, and securing devices. Ensures safe use in public and industrial areas.
Anti-Slip Surface Options
Choose plain surface or serrated (notched) surface. Serrated trench grating provides extra grip in rain or oily conditions, reducing slip risks for pedestrians and vehicles.
Corrosion Resistant & Low Maintenance
Hot-dip galvanised mild steel for long-term rust protection. Stainless steel 304 or 316 available for coastal or chemical plants. No painting required – simple hose-down keeps it clean.
Custom Sizes & Configurations
Each panel can be custom-cut to trench width. Available with single or dual panels, hinged or lockable designs for easy under-grate cleaning access.
Floods drain, loads hold – trench grating, the AS3996-certified drainage solution.
Downloads
Brochures, CAD drawings, and installation guides will be available for download soon.
Material Standards
Material testing standards and certifications will be updated soon.
Fabrication & Application Standards
Fabrication and application testing standards will be updated soon.
Manufacturer’s Certification
Manufacturer certification details will be updated soon.
Calculators
Load rating, span, and material calculators will be available soon.
Frequently Asked Questions
Product-specific FAQs will be added soon. Please check our main FAQ page for general inquiries.
CUSTOMER TESTIMONIALS
Hot-dip galvanized steel grating is easy to install, gratings are strong, slip-resistant, and rust-proof. The product is strong and well-made. They have their own factory with 20 years+, Had sent me photos during shipping. Very satisfied! Will definitely order from them again.
Absolutely love this fence! The material is thick, galvanized well and anti-rust. Super easy to assemble, strong and stable for outdoor use. The team is very responsive and helpful throughout the whole order. 100% satisfied and will be a long-term buyer.
Bulk order of mesh finished perfectly. Uniform size and high hardness, suitable for construction and fencing projects.
These invisible decorative manhole covers are beyond my expectations. Fine welding, smooth edges and premium material. It can be fully covered with tiles to achieve a completely invisible effect, greatly improving the overall aesthetics of the project. The supplier is responsive and reliable, will definitely reorder.
The chain link fence we ordered is absolutely fantastic in every detail. The galvanized coating is even and thick, providing great anti-rust and weather resistance for long outdoor service. The mesh structure is tight and uniform, very tough and not easy to deform. The whole cooperation experience was wonderful, the supplier replied quickly and arranged everything professionally. Highly recommended for all fencing projects.
Perfect fit and excellent quality. This security door hinge is solid, durable and beautifully finished. It greatly improves door stability and safety. Smooth communication and fast delivery. Very happy with my purchase.
The temporary fence is made of high-quality metal material with solid overall structure. The welding work is neat and firm, not easy to bend or damage. Hot galvanized surface provides great rust and corrosion resistance, perfect for outdoor construction sites, events and public isolation. The whole set is easy to move, assemble and store. The supplier is professional with fast reply and thoughtful service. I am very satisfied with this purchase.
Very happy I chose this linear steel grating! The design is practical, the gaps are well spaced for quick drainage, and it’s really easy to install. The material quality is top notch, tough and weather-resistant for long outdoor life. The service was warm and professional, always quick to reply and helpful. Will absolutely order again for our next project.
Amazing pets mesh! Durable, lightweight and extremely functional for all pet containment needs. The construction is solid, not easy to fray or deform. Perfect for garden fencing, animal pens and outdoor protection. Great communication throughout the whole order. 100% trustworthy supplier, love this product!
Perfect fence for my outdoor space! Very stable, easy to assemble and incredibly durable. The build quality is amazing, no bending or damage at all. It greatly improves my yard security and overall appearance. Friendly support and fast delivery, 100% recommended.