冷拔精密无缝钢管是用于机械结构、液压设备的尺寸精度高和表面光洁度好的精密冷拔无缝管。选用精密无缝管制造机械结构或液压设备等，可以大大节约机械加工工时，提高材料利用率，同时有利于提高产品质量。冷拔或冷轧精密无缝管（GB3639-2000）是用于机械结构、液压设备的尺寸精度高和表面光洁度好的冷拔或冷轧精密无缝钢管。高精度冷拔管是指内、外径尺寸精度(公差范围)严格，内外表面光洁度、圆度、直度良好，壁厚均匀。
Cold drawn precision seamless steel tube is a kind of precision cold drawn seamless steel tube with high dimensional accuracy and good surface finish for mechanical structure and hydraulic equipment. Choosing precise seamless tube to manufacture mechanical structure or hydraulic equipment can greatly save machining time, improve material utilization rate and improve product quality. Cold drawn or cold-rolled precision seamless steel tube (GB3639-2000) is a kind of cold drawn or cold-rolled precision seamless steel tube with high dimensional accuracy and good surface finish for mechanical structure and hydraulic equipment. High precision cold drawn pipe refers to the inner and outer diameter with strict dimensional accuracy (tolerance range), good internal and external surface finish, roundness and straightness, and even wall thickness.