Cold drawn steel pipe is normally divided into low and medium pressure boiler pipe, high pressure boiler pipe, steel pipe, stainless steel pipe, oil cracking pipe, the other steel, but also thin-walled carbon steel, alloy steel thin-walled, thin-walled stainless steel, special steel pipe.

Cold drawn means at room temperature, after cold drawing, cold, cold drawn, such as the processing of cold steel or steel into various types steel. (including a tapered pipe, oval shaped steel pipe, etc. are manufactured using this method)

Advantages of cold drawn steel pipe: molding speed, high output, and does not damage the coating, can be in the form of cutting brittle various kinds of cross section, to meet the needs of the conditions of use. Cold drawn can make the steel produces very large plastic deformation, thus improve the yield point of steel.

Disadvantages of cold drawn steel pipe:

1. Although the molding process is without thermal plastic compression, but there are still residual stress in the cross-section of the overall and local buckling characteristics of steel will inevitably have an impact;

2. Forming of cold drawn steel is generally open section, so that the free section of low torsional stiffness. When flexural prone to twisting, bending and torsion when the pressure is prone to buckling, torsional performance is poor;

3. Wall thickness of cold rolled steel is smaller pieces in the corner of the interface board and no thicker, concentrated load capacity to withstand localized weak.