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Galvanised Mild Steel Sump Grates – Hinged
Our Galvanised Mild Steel Sump Grates - Hinged are designed for safe, durable, and efficient surface water management across commercial, industrial, and civil applications.
Featuring a hinged mechanism, these grates provide secure access to underground sumps and pits without the need to fully remove the grate making them ideal for maintenance-heavy environments.
Fabricated from hot-dip galvanised mild steel, the grates offer excellent corrosion resistance and are available in various load classes (B, C, or D) to suit foot traffic, light vehicle, or heavy-duty use. These hinged sump grates are built to comply with AS 3996, making them suitable for councils, developers, and contractors across Australia.
Technical Specifications
| Description | Length (mm) | Width (mm) | Depth (mm) |
|---|---|---|---|
| 450x450 Class B Grate and Frame Encased | 800 | 800 | 150 |
| 450x450 Class D Grate and Frame Encased | 800 | 800 | 200 |
| 600x600 Class B Grate and Frame Encased | 900 | 900 | 150 |
| 600x600 Class D Grate and Frame Encased | 1000 | 1000 | 200 |
| 900x600 Class B Grate and Frame Encased | 1000 | 1300 | 200 |
| 900x600 Class D Grate and Frame Encased | 1000 | 1300 | 200 |
| 900x900 Class B Grate and Frame Encased | 1200 | 1200 | 150 |
| 900x900 Class D Grate and Frame Encased | 1300 | 1300 | 200 |
| 1200x1200 Class B 2 Part Grate and Frame Encased | 1600 | 1600 | 175 |
| 1200x1200 Class D 2 Part Grate and Frame Encased | 1600 | 1600 | 225 |
Key Features
- Hinged Access Design: Provides safe and convenient access without full removal.
- Durable Galvanised Mild Steel: Hot-dip galvanised for long-term corrosion protection.
- Secure Grate and Frame Assembly: Tight fit minimizes rattle and movement under load.
- Slip-Resistant Surface: Reduces risk of slips and enhances safety.
- Complies with AS 3996: Meets Australian standards for access covers and grates.
- Fixed Frame Integration: Supports precast concrete installation for added strength.
Load Class Ratings (AS 3996 Compliant)
| Class | Typical Use | Nominal Wheel Load (kg) | Serviceability Design Load (kN) | Ultimate Limit State Design (kN) |
|---|---|---|---|---|
| A | Pedestrian areas only (e.g. walkways, backyards) | 330 | 6.7 | 10 |
| B | Residential driveways, footpaths, parks | 2,670 | 53 | 80 |
| C | Residential roads, low-speed car parks | 5,000 | 100 | 150 |
| D | Major roads, warehouses, loading docks | 8,000 | 160 | 210 |
| E | Freeways, heavy vehicle areas | 13,700 | 267 | 400 |
| F | Docks, wharfs, airport taxiways | 20,000 | 400 | 600 |
| G | Runways, ports, and high-load transport areas | 30,000 | 600 | 900 |
Applications
- Stormwater Sumps & Inspection Pits
- Car Parks & Driveways
- Industrial Yards & Warehouses
- Council Parks & Public Facilities
- Commercial Landscaping & Drainage Zones
- Roadside Kerbs & Service Areas