Cold Pilgering

Cold Pilgering is a longitudinal cold roling process that reduces the diameter and wall thickness of metal tubes in one process step.

Manufacturing Chart

There are two main facts to remember about the pilgering process: Pilgering, for one, is a cold working method that vastly strengthens the material structure. Second, with a reduced rate of 50-60%, it will reduce the outer diameter, internal diameter, and thickness of the tube significantly. A saddle assembly is included in the equipment, which holds the upper and lower dies. The outer diameter of the tube is squeezed by these dies. Within the tube is a mandrel that keeps the inside diameter constant while the dies reduce the outside diameter. The mandrel is tapered and stationary, but in a cyclic operation, it rotates at particular times. The lateral dimension of the tube reduces as the dies are forced in between it, while the longitudinal dimension increases.

Manufacturing Chart

Your Vision, Our Mission. Contact Us to Achieve More Together.

get-work-shape get-work-shape get-work-ornament get-work-ornament