Cold drawn steel pipe is a pipe, that is, its production process according to a different classification, different from the hot-rolled (expansion) tube, while the high-precision cold drawn precision steel product features refers to the so-called high-precision drawing within outer diameter accuracy (tolerance range) strict external surface finish, roundness, straightness good precision steel tube uniform wall thickness. In raw wool tube or pipe flaring through the process of drawing multi-pass processing, usually in the 0.5 ~ 100T single chain or double chain drawing machine on. Cold drawn steel pipe whose diameter can go to 6mm, wall thickness can be 0.25mm, outer diameter thin-walled tube to 5mm thickness less than 0.25mm size, precision and surface quality are much better than hot-rolled (expansion) tubes, but by the process constraints, the diameter and the length are subject to certain restrictions. Precision cold drawn steel tube is drawn through large-tonnage hydraulic machine pull system produced can be used directly or through honing, scrapers used after hydraulic (pneumatic) cylinder. Of precision cold drawn steel industry after 20 years of practice, product quality and technical performance has reached world advanced countries, and has been widely used in engineering machinery, plastic machinery, textile, printing machinery, automotive shock absorbers, oil pumping pumps and concrete cylinders and other industries.
The product was a little honing, it can be directly used as hydraulic, pneumatic cylinder cylinder tube. The traditional hydraulic, pneumatic cylinder body tube of the production process is the use of hot-rolled seamless steel pipe, using boring ─ ─ rolling joint cutting process, the production process, a lot of metal waste was cut into chips, but also consume a lot of power. With China's industrial and technological development, the hydraulic cylinder technology has been widely used, according to incomplete statistics, the country each year requires a variety of specifications of the hydraulic cylinder about 380 meters, follow the old technology production of hydraulic cylinders, has been difficult to adapt production development.
Fine precision cold drawn steel pipe is a new high-skill energy-saving products. Recently, to take the technology to produce fine item has been commonly used in domestic steel hydraulic, pneumatic cylinders, coal mine bracket (pillars), oil pump pipe, jacks and other production areas. Precision cold drawn precision steel tubes to promote the use of steel for the thrifty, progressive processing efficiency, diligence and energy, reducing the hydraulic cylinder, the cylinder processing equipment investment is important.
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