Round frame-Base

• Ductile iron.
• Non-slip surface.
• Black paint.
• Breaking load: 25 tons/40tons/60tons/90tons
• Locking closure.

Class： C250/D400/E600/F900

Waterproof manhole cover is also one of them.

Round Frame Ductile Iron Manhole Covers

Ductile iron manhole covers with a round frame are versatile infrastructure components.

Light Duty & Heavy Duty

• Light Duty: Suitable for areas with low traffic, like pedestrian zones, garden paths. They bear light loads, ensuring safety for foot traffic while being cost – effective.
• Heavy Duty: Designed for high – traffic and heavy – load places, such as main roads, industrial zones. Can withstand the weight of vehicles, preventing damage and ensuring long – term use.

Application Scenarios

Widely used in municipal engineering (road construction, sewage systems), residential areas (for covering underground pipes in communities), and industrial sites (to cover utility access points). Their round shape fits standard circular openings, providing a secure seal and easy installation.

These covers offer excellent durability, corrosion resistance, and strength, making them a reliable choice for various projects.