Cold bending properties of steel is resistance to cracks when measuring steel bent at room temperature plastic deformation process. Cold bending properties of the steel is subjected to cold-formed steel experiment to test the performance of a predetermined degree of bending of the bending deformation. Although China has in the iron structure of the early remarkable achievement, but because of the 2,000 years of feudal shackles, Chongzuo steel, science developed, steel, and therefore, long-term stay in the horizontal iron buildings. Until the 19th century, China began using modern steel structure. Steel Nanning, Guangxi Yinhe (certified), steel supplied by Guangxi Yinhe metal structure Engineering Limited. Guangxi Yinhe metal structure Engineering Company Limited (www.gxmmr.cn) Guangxi Nanning, the activities of the leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In Guangxi Yinhe leadership with the staff warmly welcome all inquiries negotiations to create the Guangxi Yinhe better future.