Xi'an Shew-E Steel Pipe Co.,Ltd is one of the leading ck45 precision pipe suppliers and also a famous such manufacturer, equipped with many professional ck45 precision pipe factories, welcome to purchase high quality ck45 precision pipe from our company.Standard:DIN172000Materials: CK45Technical: cold-draw seamlessApplication: used in the hydraulic cylinder of the Heavy Machinery, Cranes, Excavator and Forklifts.etcTolerance：