Product Introduction:

Qingdao Century Pipe Industry's special cast iron pipes for sewage treatment are among our core products. They are produced strictly in accordance with the GB/T 13295—2013 national standard, with specifications ranging from DN80mm to DN2600mm, ensuring a full range of options. With a stock of 10,000 tons, we guarantee a sufficient supply and efficient shipment. The product uses low-phosphorus, low-sulfur high-quality casting iron, processed through precise procedures like centrifugal casting and annealing. The high degree of graphitization and dense tube structure offer both high strength and toughness, effectively resisting ground settlement and external load impacts. To combat the corrosive nature of sewage, the inner surface of the pipe is lined with aluminosilicate cement mortar and epoxy resin for specialized corrosion protection. The outer surface features a dual protection of ≥200g/㎡ zinc spraying + epoxy paint, providing excellent resistance to acidic and alkaline corrosion, suitable for complex sewage environments with a lifespan exceeding 50 years. The joints are designed in T, K, and S types for flexibility, paired with nitrile rubber sealing rings for reliable sealing and easy installation, accommodating thermal expansion and contraction and ground settlement, significantly reducing leakage risks. The smooth inner surface of the product reduces scaling and the likelihood of blockages, making it widely applicable in urban stormwater and sewage separation networks, industrial wastewater discharge, and sewage treatment plant conveying systems. Backed by advanced production technology and stringent quality control, our company has passed ISO9001 Quality Management System certification and ISO14001 Environmental Management System certification. We have a professional installation technical team providing full guidance. With excellent quality, our products are exported globally and have become a reliable choice in the sewage discharge field.