Gu Chang annual production of ductile iron foundry covers features: 1) Earthquake: by setting the U-shaped groove in the mouth just Manhole, with the T-type synthetic rubber, embedded in a U-shaped groove in the Manhole covers The contact process in order to cushion and reduce vibration force. 2) Anti-ring: occlusal surface contact with Manhole covers, the direct effect on the ductile manhole cover in the T-rubber, softness, eliminate noise. 3) Security: the outer covers, projecting a square groove, which covers the inner wall of the end of the split ring by well base and covers the fixed shaft and the other end fixed to the inner wall of the pin body is provided, and play a security role, when the covers open place 90 you can remove the covers when the degree of ductile covers price, ease of construction. Mortice locks nylon bushings, never rust, and is equipped with special tools to open, safe and reliable. Shanxi Taigu County Chang foundry is located in the hometown Inoue - Kim Gu treasure. Taigu Shanxi Jinzhong City, State Road 108, Hu village malleable Industrial Park, east of long high-speed, high-speed transportation Northern Qi Tongyu convenient and accessible. Ductile cast iron covers are one of the product, its construction environment ask for? Gu Chang-year foundry to tell you: 1. The covers should have raised the height of not less than 3mm 2. covers, rain grate and bearing surfaces should produce smooth, without cracks and the impact of inspection covers the use of performance. The cold shut, shrinkage and other defects, not welding. 3. Size of seat covers and assembly should meet the requirements, and to ensure compatibility with the bearing covers. The covers of the contact surface with the bearing support surface machined ductile covers much money, to ensure the smooth contact with the bearing covers. 5. covers the carrying capacity of not less than 360KN, allow the residual deformation is 1/300 * carrying capacity D, rain grate is not less than 140KN. Between 6 and seat covers should be made of galvanized chain-linked or other forms of locking device. Grate and Manhole by pin (or other forms) tied, flip angle of not less than its grate 120 °. Taigu County Chang foundry located in Inoue's hometown - Kim Gu treasure. Taigu Shanxi Jinzhong City, State Road 108, three anti-ductile covers, Hu village malleable Industrial Park, east of long high-speed, high-speed transportation Northern Qi Tongyu convenient and accessible. Ductile covers much money _ Chang in foundry (certified) _ Gu Gu ductile manhole cover provided by Chang in foundry. Gu Chang-year foundry (www.sxcnzz.com) is Jinzhong, machining leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Chang-year leadership in the foundry staff warmly welcome all inquiries negotiations to create Chang foundry in a better future.