Delivery condition of carbon tube 1. NBK(+N) of seamless pipe after cold forming, eventually above phase transition point, in a protective atmosphere of annealing oxidation medium 2. GBK(+A) of seamless pipe after cold forming, annealing in non oxidizing medium protective gas 3. BK(+C) of seamless pipe the final heat treatment after cold forming, therefore small steel pipe plastically, the plastically degree does not guarantee 4. BKW(+LC) of seamless pipe after final heat treatment, a tiny cold drawing deformation, continue again when machining steel pipe allowed inside certain limits cold deformation(bending, flaring) 5. BKS(+SR) of seamless pipe have a stress relief after cold forming, heat treatment, carbon steel pipe can be carried out within a certain limit in the appropriate processing again Company & workshop: Yantai Xinpeng Steel Pipe Co., Ltd,established in Dec 1992, with registered capital of 5 million Yuan, we have more than 20 years experience in manufacturing and exporting seamless carbon steel pipe. Our company mainly produces various specifications of cold finished carbon steel pipe, which are widely used in hydraulic Pneumatic cylinder for automobile, engineering machinery, textile machinery, hydraulic breaker, elevator buffer, printing machinery, oil drilling and other field. What we can provide are carbon steel tube, seamless steel tube, cold drawn steel tube, cold rolled steel tube, honed steel tube, skived and roller burnished steel tube, polished steel tube, skived and roller burnished steel tube, hydraulic steel tube, cylinder steel tube, and so on. seamless tube, seamless pipe, carbon tube, cold drawn tube, cold rolled tube, honed tube, hydraulic tube, cylinder tube, hydraulic cylinder tube....... Our company are equipped with JLB250T hydraulic cold drawn set,LED120 cold rolling set, annealing surface, strong honed machine, polishing machine, lathe, saws CNC skived and roller burnished machine, kinds of testing machine. Strictly comply with ISO9001 System, assure the best quality of carbon steel tube and seamless steel tube.
