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What is cold pilgering?

The cold pilgering process, also known as cold rolling or cold drawing, is a metalworking process used to reduce the diameter and thickness of tubes or pipes. The process involves feeding a metal billet through a pair of tapered, rotating dies that gradually reduce the diameter and thickness of the billet, resulting in a finished tube or pipe with a smooth, uniform surface.

During the cold pilgering process, the billet is fed into the first die, which reduces its diameter and thickness. The tube or pipe is then fed through a series of additional dies, each of which further reduces its diameter and thickness. The process continues until the tube or pipe reaches its final size and thickness.

The cold pilgering process is commonly used to produce high-quality seamless tubing and pipes with a uniform wall thickness and excellent surface finish. The process can be used to produce tubes and pipes in a range of materials, including stainless steel, nickel alloys, and titanium.

One of the advantages of the cold pilgering process is that it can produce tubes and pipes with a high degree of precision and consistency, making it a popular choice for applications in industries such as aerospace, automotive, and oil and gas. However, the process requires specialized equipment and expertise to perform effectively and efficiently.