Cold drawn seamless pipe is used for high dimensional accuracy for mechanical structure, hydraulic equipment and good surface finish steel pipe. Choosing cold drawn seamless tube manufacturing machinery structure or hydraulic equipment, can greatly reduce machining time, improve material utilization, and help improve product quality.

If get smaller size and better quality, seamless, must be cold-rolled, cold drawn or both combined. Rolled normally on two-roll mill, steel circular hole in the variable cross-section hole tapered slot and does not move head composed of rolling. Drawing is usually carried out on 0.5 ~ 100T single chain or double chain drawing machine.

Characteristics of cold drawn seamless pipe: 
1, Diameter smaller. 
2, High precision can do small quantities of Health 
3, Drawing high (rolled) finished precision, good surface quality. 
4, Steel Cross area more complicated. 
5, Steel better performance, comparison to dense metal.