Product Introduction:

Qingdao Century Ductile Iron Pipe Industry's ductile iron manhole covers are high-quality matching products for municipal construction and public facilities. The product uses high-quality ductile iron with grade QT500 and is produced strictly in accordance with national standards such as GB/T 23858-2009, covering specifications from DN500 to DN800mm. Special diameters can be customized as required, fully meeting the application needs of different scenarios.

Product boasts core advantages of high strength and toughness, with tensile strength ≥ 420MPa and elongation ≥ 7%. It has undergone rigorous testing by a 24-ton loader without damage, capable of supporting loads from A15 to E600, fitting various scenarios from sidewalks to industrial sites. It exhibits excellent corrosion resistance, operates stably at extreme temperatures from -40℃ to 250℃, and has superior insulation properties. The surface is treated with professional coatings like anti-corrosion asphalt and epoxy resin, ensuring a service life of over 50 years.

The manhole covers feature a reinforced design with a back brace for even distribution of forces, and have anti-slip textures on the surface to ensure safety for pedestrians and vehicles. The innovative use of materials with no scrap value eliminates the risk of theft at the source. Additionally, we offer personalized customization with options for color, shape, and markings according to your requirements, combining utility with aesthetics. Our company has multiple production lines for steel molds, lost foam casting, and resin sand casting, enabling us to provide customized solutions with various processes and coatings. Our products are widely used in various inspection wells such as water supply, sewage, electricity, communication, and gas, providing a reliable guarantee for the safe and stable operation of urban infrastructure.