Ductile iron manhole cover CO550x550 is a kind of manhole cover, heavy-duty cover designed for use in various applications, This item of Ductile Manhole Cover, including sewer systems, drainage systems, and underground utilities. Here are some product details of this Manhole Cover: 1. Material: The cover is made from ductile iron, which is a type of cast iron alloy that provides superior strength, durability, and resistance to cracking and breakage. 2. Dimensions: The CO550x550 cover has a square shape with dimensions of 550mm x 550mm. This size is commonly used in standard manhole openings. 3. Load Capacity: The cover is designed to withstand heavy loads and has a load capacity rating that complies with industry standards. It can handle the weight of vehicles, pedestrians, and other loads without deforming or breaking. 4. Surface Design: The top surface of the cover is typically designed with anti-slip patterns or textures to provide traction and prevent accidents cau…