Gu Chang foundry in Brief covers the two most important parameters are with you. The two most important parameters of the covers for the hardness and toughness. In general, the higher the hardness, the better the quality, but high hardness, and toughness but also good, this is good covers. Gu Chang-year foundry cast iron manhole covers round remind you carry out design, in addition to determining the geometry of the cast iron manhole covers, according to the working conditions and the size of the metal material properties, but also must be considered from the perspective of casting alloys and casting characteristics design is reasonable, that is a significant size effect and solidification circular cast iron covers manufacturers, shrinkage, stress and other issues, in order to avoid or reduce the cast iron covers of segregation, resulting in deformation of the circular cast iron covers companies, cracking and other defects. Gu Chang foundry located in Shanxi Province, Taigu County towns Hu Dong village crossing State Road 108. When selecting the cast iron cover what should be the basis? Load capacity is based, broadly divided into the following three: First, the light: 25 t / m2; car, pedestrians campus residential park, park cable trench cover, underground parking and other kitchen. Second, heavy: 70 t / m2; 20 tons of cast iron automobile traffic circle factory covers factory, general road atlas gutter cover, roadside roads, parking lots and streets. Third, the super-heavy: 140 t / m2; heavy trailer, container forklifts, cranes and aircraft traffic trunk road, large parking lot, mines, docks and airports. 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. Round cast iron covers Quote | Chang in foundry (certified) | Linfen circular cast iron covers are provided by Gu 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.