Taigu Chang outlined in foundry Why higher strength ductile iron manhole cover. Ductile iron and gray cast iron covers specification covers the same factory in Shanxi municipal wells, the material is different wholesale Shanxi municipal wells, to introduce you ductile covers "chemical and physical features of the new manhole covers using QT500-7 cast ductile iron weight light weight, high strength, toughness, corrosion resistance, fatigue resistance, suitable with the same cost and size of gray cast iron manhole covers and light weight compared to 40% to 50% higher strength compared to 40% to 50% higher than the old gray cast iron covers. The old gray cast iron covers brittle easily broken. Now ductile and gray iron products of chemical composition, physical performance comparison. From the above chemical composition and physical properties of ductile iron in terms of data comparison drawn tensile strength, elongation, yield strength and ultimate load indenter decisive indicators of several materials is much higher than the gray cast iron chemical composition of various kinds of data than gray cast iron much more reasonable. Shanxi manhole covers installation methods: cement pavement well base installed on the wellhead brickwork casting 20CM thick C25 concrete ring beam disappearing, we must maintain the seat of the Quartet really well, the overall level of municipal wells in Shanxi Which is good, not loose and covers cast concrete 40CM wide circle of protection (if it is concrete pavement, can also be cast in concrete 20CM wide circle of protection, and with steel strengthen) the maintenance period to more than 10 days. Chang foundry located in Taigu Taigu County, Shanxi Province, Hu village Dong village crossing State Road 108, welcomed the order! Which Shanxi municipal wells | Shanxi municipal wells | Chang on by Taigu Chang foundry in foundry. Taigu Chang in foundry (www.sxcnzz.com) strong, credible, in Jinzhong machining industry has accumulated a large number of loyal customers. The company better work attitude and continuous improvement of innovative ideas will lead foundry Chang into the brilliant and you work for a better future!