Ductile iron castings has been in almost all major industrial sectors Taigu covers custom applications, these sectors require high strength, ductility, toughness, abrasion resistance, severe thermal and mechanical shock, high temperature or low temperature resistance, corrosion resistance and size stability. In order to meet the conditions of these changes, many of the existing grades of ductile iron, providing a very wide mechanical and physical properties of the range. Such as the International Organization for Standardization ISO1083 under the most ductile iron castings, mainly in the form of non-alloy production. Obviously, this range includes a tensile strength greater than 800 N / mm Taigu covers, elongation of 2% high strength grades. Manhole covers common material for QT500-7, Brinell hardness 170-230HB. At the other extreme is a high grade plastic, elongation greater than 17%, while the corresponding lower strength (minimum 370 N / mm spoon. Strength and elongation are not the only root designer the choice of materials, and other important properties decisive also include yield strength, elastic modulus, wear resistance and fatigue strength, hardness and impact properties of Taigu Chang Foundry share with you: heavy weight cast iron covers, so installation should set up a boom and the covers Manhole covers Taigu piece hanging up the price, and when installed must pay attention must Manhole installed, be careful when Manhole installation of the concrete base will be well after casting or laying asphalt, should be promptly cleaned covers open to avoid the pouring mortar or asphalt covers, water grate with well base into one, so as not to affect the future open. Taigu Taigu covers covers custom _ _ 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 continuously improve innovative ideas will lead Chang foundry and you work in step the brilliant, for a better future!