Chang Taigu years to introduce you to manhole covers: Ductile iron is the 1950s developed a high-strength cast iron materials, covers, and its overall performance is close to steel, has been successfully used to cast some of the complicated forces, strength toughness, high wear resistance parts. In the municipal roads, highways, telecommunications, electricity, covers manufacturers, water, residential, decorative covers, schools and other areas can be used in our products. Our reliable quality and good after-sales service, the majority of users praise and dedication to our customers to provide better products and services. If there is a demand can come to consult oh. Address: Shanxi Province Hu Taigu County town 108 National Road Dong Village Crossing ductile iron for its excellent performance in use can sometimes replace the expensive cast steel and forged steel, widely used in machinery manufacturing industry. International metallurgical industry in the past has been that the British invention of ductile iron in 1947. Some Western scholars even claim that cast iron manhole covers, there is no means of modern technology, ductile invention is unthinkable. Taigu Chang foundry in order to meet the conditions of use of these changes, many of the existing ductile iron grades, provides mechanical properties and rational can kiss a very wide range. Cast iron covers, Chang-year foundry (certification), covers by Taigu Chang in 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.