Liaocheng dry one hundred million Industry Co. (www.sd304.com) is located in Liaocheng City, Shandong Province, Wang Zhuang Industrial Park Development Zone, Contact: Deng Qinghua seamless precision tubes and the difference between: 1, the main features of seamless steel pipe without welding seam, can withstand greater pressure. Products can be very rough cast or cold call. 2, precision steel products emerged in recent years, mainly in the hole, the outer dimensions with tight tolerances and roughness. Professional manufacturer of precision steel tubes - Shandong Liaocheng dry one hundred million industry (silver Sheng supplies) specializing in the production of various types: precision tubes, precision steel 20 #, 45 # precision seamless, 16mn precision seamless Liaocheng supply Ningbo 20 # precision steel , precision light pipe, production range 10 * 1-219 * 30mm size precision seamless. Precision steel can be accurate to within 20 # 0.0.5mm Ningbo manufacturer of precision steel to withstand high pressure without leakage. Precision steel of excellent quality. Precision cold drawn seamless steel tubes, precision steel machinery, refined precision bearing steel bar, steel sleeve with precision steel tubes, precision steel cylinder shock absorbers, hydraulic and steam-driven cylinder with precision internal diameter seamless pipe, precision steel motor housing, precision shaped tube. High-tech company based on the production of high precision steel pipe, sophisticated production equipment, testing equipment, can be oxygen annealing (NBK). Annual production capacity of 25,000 tons, and improve the quality management system,