Premium 600mm Fiberglass GRP Composite Underground Drainage Inspection Chamber Lid & Frame

Ultra-Durable GRP Composite
High-strength fiberglass reinforced polymer (GRP) ensures superior load-bearing capacity (up to D400 standards) and corrosion resistance. Ideal for heavy-duty underground drainage systems.
Precision Engineering
Seamless mold design with anti-slip textured surface and airtight seal. Reinforced ribs provide structural integrity, preventing deformation under extreme pressure.
Weatherproof & Chemical-Resistant
UV-stabilized material withstands harsh environments—resistant to acids, alkalis, and temperature fluctuations (-40°C to +120°C). Perfect for industrial zones, roads, and municipal projects.
Lightweight Yet Robust
50% lighter than traditional cast iron, reducing installation labor and costs. Meets EN124 certification for pedestrian and vehicular traffic areas.
Easy Maintenance & Long Lifespan
Non-rusting, non-conductive, and maintenance-free. Designed for sewer access, utility tunnels, and telecom manholes. Compatible with standard 600mm chamber openings.
Global Bulk Supply Advantage
Lowest wholesale prices guaranteed. Customizable quantities for contractors, municipalities, and distributors. Ships worldwide with OEM/ODM support.