Sixty years, architects have been made of stainless steel to build cost-effective permanent structures. Many of the existing buildings fully explained this choice is correct. Some are very ornamental in nature, such as New York City's Chrysler Building. But in many other applications, the role of stainless steel is not so dramatic 304 stainless steel, but it plays an important role in the aesthetics and performance of buildings. For example, because stainless steel is more abrasion resistance and resistance to indentation than other metal materials of the same thickness, so the construction of stainless steel tubing when the sidewalk large population movements in the place, which is the material of choice for designers. (Rolled) seamless steel pipe: round tube → heating → perforation → Heading → annealing → pickling → oiled (copper) → multi-pass cold drawn (cold) → billet tube heat treatment → → straightening → hydrostatic test (testing) → mark → storage. Cold drawn (rolled) than hot-rolled seamless steel pipe rolling method (squeeze seamless steel pipe) complex. Their first three steps of the production process is basically the same. Differs from the beginning of the fourth step, after playing a round tube empty to begin with annealing. After annealing to use a special acidic pickling liquid. Pickled, oiled. Then followed through many times of cold drawn (cold) and then blank tube, special heat treatment. After the heat treatment, it will be straightened. And appearance quality A, according to GB14975-2002 "stainless steel seamless pipe" provides the length of pipe is usually (not length) hot-rolled steel 1.5 ~ 10m stainless steel pipe, hot extruded pipe is equal to and greater than 1m. Cold drawn (rolled) pipe wall thickness 0.5 ~ 1.0mm were, 1.0 ~ 7m; wall thickness greater than 1.0mm were, 1.5 ~ 8m. Stainless steel pipe _ Shengda Po-commerce (certified) _ stainless steel pipe provided by the Tianjin Shengda Bao Jie Trading Company. Bao Jie Tianjin Shengda Trading Company (www.sdbjsm.com) is Tianjin, hardware leader, over the years, the company implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Shengda Po-commerce leader in the staff warmly welcome all inquiries negotiations to create Shengda Po-commerce a better future.