Taigu Chang in foundry double ductile covers features: flush with the road surface, the convergence of underground facilities inspection covers, the structure of the upper and lower layers a cast iron covers. This standard specifies the technical requirements for underground facilities Manhole double manhole covers, test methods, inspection rules. This standard applies to urban roads, highways and other motor vehicle or motorcycle may be with or manholes covers parked on the ground. Manhole covers main cover material shall comply with GB / T1348-1988 of. Sub cover should be non-metallic materials. Sub cover the manufacture of glass steel materials should be used. One of the criteria of Shanxi manhole covers: CJ / T 3012-93 "cast iron manhole covers" While simply divide heavy, light covers two levels of ductile cast brand, but provision covers heavy load of 360kN and EN124 test provisions suitable for all Species vehicle close to D400. 10 years of practice proved that covers the use of this load is basically safe on the road. Taigu County in Shanxi Province, Chang Inoue foundry is located in the hometown - gold Taigu treasure. 108 State Road, Taigu, Jinzhong City, Shanxi Province, Hu village Magang industrial park covers ductile cast much money, east too fast, convenient North Tongyu Qi-speed transportation and accessible. Which covers ductile casting, foundry Chang in Shenyang covers ductile cast by Chang in Taigu foundry. Taigu Chang in foundry (www.sxcnzz.com) is Jinzhong, machining leaders, over the years, the company implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In Chang in foundry leadership with the staff warmly welcome all inquiries negotiations to create Chang foundry in a better future.