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 Company (135--0635--7000) based on the production of high-precision pipe technology, sophisticated production equipment, testing equipment 20cr precision seamless tube, can be oxygen annealing (NBK). Annual production capacity of 25,000 tons, the quality management system, has passed the ISO9001: 2008 and TS16949: 2009 quality system certification. Company will be the national standard (GB), American Standard (ASTM), German standard (DIN), Japanese Standard (JIS), the European Standards (EN) 20cr precision seamless tube production specifications, cold drawn steel product specifications for the outer diameter φ10 -φ370mm, wall thickness 1-32mm, technical requirements to meet the standard requirements or by mutual agreement. Standard finish tube and uses standard Standard GB / T3639 GB / T8713 Precision Tube DIN2391-2 HK15-2000 uses Uses for the manufacture of mechanical structures, hydraulic equipment, auto parts cold drawn or cold rolled precision seamless tubes (GB3639-2000) is a good finish for cold drawn or cold rolled precision seamless high dimensional precision mechanical structure, hydraulic equipment and surfaces. Cold drawn precision cold drawn precision steel tubes is a new high-tech energy-saving products. , High-precision cold drawn precision steel tubes application for saving steel, improve processing efficiency 20cr precision seamless tube production, energy conservation refers to the so-called high-precision cold drawn tube inner diameter size accuracy (tolerance) strict, internal and external surface finish, The main technical indicators roundness, straightness good, uniform thickness refined the technology's high-precision cold drawn tubes has reached or exceeded the national standard GB8713--88 part of the requirements and international standards ISO4394 / I-1980 (E) of .