Square frame ductile manhole cover 850x850 D400 

The square frame ductile manhole cover with dimensions of 850x850mm falls under the D400 load class. Here are some product details: 1. Material: The manhole cover is made of ductile iron, which is a type of cast iron known for its high strength and durability. 2. Load Class: It is classified under D400 load class, which means it can withstand a maximum load of 40 tons. This makes it suitable for heavy-duty applications such as highways, main roads, and areas with heavy traffic. 3. Design: The manhole cover has a square frame design, providing a secure and stable fit. It is designed to prevent unauthorized access and ensure the safety of pedestrians and vehicles. 4. Anti-Slip Surface: The top surface of the cover is typically designed with anti-slip patterns or textures to enhance traction and prevent accidents caused by slipping. 5. Locking Mechanism: Some square frame ductile manhole covers come with a locking mechanism to prevent theft and unauthorized access. This ensures the…