Coil  rod is used for fastening formwork when cast concrete wall or girder in construction. It can reduce construction formwork remarkably. Our products have been adopted by many large hydropower stations, all of the nuclear power stations, and Beijing Olympic venues.Technical Specifications:Outside Diameter: 8-110mmLength: maximum: 8mSafety load: 50-440KNFinish: black or galvanizedMaterial: cast ironFull Range of Products:We are the market leader company in this industry in China. Our factory can produce full range of coil rod/thread rod with different strength, thread and shapes: ordinary strength, high strength, trapezoidal thread, U thread, ASTM (UNC standard) thread, waterstop coil rod, hollow and bent coil rod.Quality Control:We have obtained quality management certification ISO 9001:2000, and have strict quality control system.R & D Department:Our research & development department has well experienced staff. They are always focusing on designing new products, solving problems, and improving current products and technologies.