Dry Pipe Co., Ltd. Liaocheng million (www.sd304.com) is located in Liaocheng City Development Zone, Shandong Liaocheng Shandong Province Wang Zhuang Industrial Park, Contact: Deng Qinghua Company (Deng 135--0635-7000) can be customized for each user kinds of special specifications, special materials seamless steel pipe 20 # hydraulic precision seamless, timely delivery, low prices, excellent quality, together with the original or a copy of the material, holidays, business as usual, and charge d'affaires Automotive, fire shipped. Company annual inventory at around tons, with a strong hydraulic precision seamless, rich range of varieties hydraulic precision seamless, perfect quality assurance, reasonable prices, quality service hydraulic precision seamless tube prices , and are subject to approval and trust of new and old customers and the industry, we have the spirit and reach users, like users are thinking the purpose of serving constantly hard, aggressive, in this of all walks of life over the years to support our new and old friends to express my sincere gratitude, we would like future cooperation more enjoyable! 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, energy conservation refers to the so-called high-precision cold drawn tube inner diameter size accuracy (tolerance) strict, internal and external surface finish, roundness, straightness good , uniform thickness of fine art produced by the major technical indicators have reached high precision cold drawn tube or exceed national standards GB8713--88 part of the requirements and international standards ISO4394 / I-1980 (E) of.