Pipe Co., Ltd., Shandong Liaocheng virtue Manager Tian (Mr.) / Contact Address: China Liaocheng City, Shandong Province, Shandong Liaocheng Development Zone Liaohe River Road (Postcode: 252000) Pipe straightness: seamless steel pipe, straight seam steel reproduction process will lead to a curved steel tube appear to varying degrees in the longitudinal direction, and some can be seen with the naked eye precision light pipe, which is a substandard product. Regular factory has a special instrument measuring its straightness 45 # precision light tube, the factory does not allow unqualified. The numbers indicate the degree of curve is called out of steel pipe bending and straightness, for this standard, general fluid pipes do not ask, but with the mechanical processing of precision light tube stock, requirements will be high, especially rubber roller, in axis. Seamless steel pipe production process there is a three-roll straightening process, can basically meet the requirements of customers for straightness. There are two general linear calculation: a. Local curvature: a meter with a long ruler against the maximum bend steel, measuring its chord. Is the local curvature values. II. The total curvature of the total length of pipe: from both ends of the tube with a piece of string tension, measured its maximum chord pipe bends, and then convert the percentage growth of the (m), is the total length of the pipe bending length. Precision light pipe, virtue Pipe (certified), precision light pipe is provided by virtue of Liaocheng Industry Co., Ltd. Liaocheng virtue Pipe Co., Ltd. (www.meidegc.com) (www.meidegc.com) (www.mdwfg.com) (www.mdggc.com) Shandong Liaocheng, steel leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Industry leaders in the United States and Germany with the staff warmly welcome all inquiries negotiations to create the virtues pipe industry a better future.