Shanxi manhole covers test: in strict accordance with inspection standards. Roughness test: with special mold inspection covers flatness. Appearance: No obvious casting defects, Shanxi clear pattern covers the price, clear handwriting. Taigu Chang foundry specializing in the production of ductile iron manhole covers and rain Bizi, the annual production capacity of 5,000 tons, is being expanded with an annual output of 10,000 tons. Address: Taigu County, Shanxi Province, Hu Dong village town 108 State Road crossing. Since the microstructure of spheroidal graphite ductile iron, weakening vibration capabilities Shanxi covers casting, ductile than steel, and therefore more conducive to reducing the stress. One important reason is that the choice of ductile iron ductile lower cost than steel. Ductile Iron low cost makes this material more popular, casting more efficient, reducing the ductile iron machining costs. Wholesale manhole covers, on the election of Taigu Chang foundry! Shanxi covers casting, foundry Chang in (certified), Shanxi Taigu Chang of covers offered by 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.