Mainly built by ductile iron manhole covers out of the covers, which covers their quality will involve the issue of the rate of the ball. Treatment is commonly used anti-rust coating asphalt paint cast ductile iron manhole cover price, of course, also ductile iron manhole cover surface rust after spraying asphalt paint handling. Ductile iron manhole covers have the advantage that due to the high ductile strength, good toughness, making ductile than covers the same type of gray cast iron manhole covers about 30% lighter. Ductile covers mold features are: manhole cover mold high compressive strength; according to different customer production plant name and telephone number; low production cost, easy to purchase raw materials; convenient manhole cover mold making: manhole cover mold making good when you only need to configure steel fiber and concrete into the surrogate modeling, vibration molding can, stripping cycle is short, ductile iron manhole covers small investment, low labor intensity, life is relatively long. Ductile covers convenient and beautiful with the specifications of the product weighs only one-third of the cast iron manhole cover ductile iron manhole covers Weihai manufacturers to install, maintain, has brought great convenience, and the production of various sizes and colors of the products according to customer requirements, even in management, but also beautify the city. Ductile iron Ductile iron manhole covers _ Wholesale _ provided by the Yangtze River Yangtze casting foundry. This information consists of: Changyi City, Shandong Province, the Yangtze River Foundry (www.changjiangzhuzao.com) offer, we are Commercial Union membership, the integrity of the whole network authentication provider. Feel free to contact us, Contact: Zhang