Comparison with similar resin cast iron covers covers: First, on the road with heavy traffic, generally covers the selection of cast iron covers electricity prices, 40 tons load, but also to do some resin covers 25 tons of load, and the price is relatively cheap iron. But the cast iron covers relatively safe. Secondly, the iron easily stolen, lost big. There is a cast iron manhole covers and sometimes drove past have great sound, but relatively safe. Finally, if the resin is relatively much smaller. And like the green belt, sidewalks, it needs to withstand the pressure is not great, the cost of this choice on the big iron. Gu Chang-year foundry founded in 2006, is a new modern and dynamic enterprises. Since the construction of the continuous efforts to grow and electricity covers manufacturers, is to become a professional production of ductile iron covers the company, with annual production capacity of 5,000 tons, is being expanded with an annual output of 10,000 tons. Gu Chang-year foundry share with you why should I use a circular manhole cover: Highways in urban areas, generally circular, because the circular covers easy to tilt power covers, can better protect the safety of pedestrians and vehicles. Use round, mainly on account of circular covers through its center of each is the same diameter length picture covers electricity, so if the covers were rolled from passing vehicles, because no matter how rolling onwards, its diameter will be more than below wellhead slightly wider, covers not fall wellhead go. Gu Chang foundry located in Shanxi Province, Taigu County towns Hu Dong village crossing State Road 108. Welcome to buy! _ Chang-year electricity price covers foundry (certified) _ Linfen covers electricity provided by Gu Chang in foundry. Gu Chang-year foundry (www.sxcnzz.com) is Jinzhong, machining leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Chang-year leadership in the foundry staff warmly welcome all inquiries negotiations to create Chang foundry in a better future.