Our factory is specialized in the production of hot-rolled seamless cold drawn manufacturer of precision steel tubes according to customer requirements, producing a variety of precision seamless range is as follows: 1: OD: Ф15-219mm; 2: Wall thickness :1.5-25mm; 3: Surface roughness: Ra = 0.2,0.4,0.6,0.8 4: Size Accuracy: H7 ~ H10 5: Standard: GB/3639 ─ 2000; GB/8723 ─ 99 6: Material: Material: 10 #, 20 # , 35 #, 45 #, 16Mn, 27SiMn, 12Cr1MoV, 40Cr, 10CrMo910, 15CrMo, 35CrMo, A335P22 so on. 7: Features: inner and outer diameter dimensional accuracy (tolerance) strict internal and external surface roughness, roundness, straightness, uniform thickness precision seamless tube. Liaocheng dry one hundred million Industry Co., Ltd. (Silver Sheng materials) mainly produces cold drawn precision seamless steel tubes, cold drawn precision shaped steel products are mainly used for automobile oil line 45 # precision steel pipe, oil line pipe construction machinery, auto parts tube , hydraulic machinery and various tools tube tubes, furniture tube and so on. Company holds superb technology, years of actual production experience, talent attraction precision steel manufacturers, continuous research and inquiry, has become a leader in the domestic steel industry, but also get the praise of customers. Companies adhere to the "quality first 20 # precision steel, integrity management, reputation first, customer service, and strive to develop" business philosophy, together with our customers to create wealth. [Shandong] precision steel, precision steel pipe manufacturers, dry billion Precision Tube million provided by the dry precision tubes. Welcome to consult Pipe Co., Ltd. Liaocheng Dry million (www.sd304.com), be sure to specify when contact is through the "Business Alliance Member" see, thank you! Contact: Deng Qinghua