To reduce the diameter of a metal tube in a pilger mill

present participle of pilger

A cold-rolling process used in the shaping of metal tube and pipe. It involves two circular dies, with an uneven u-shape along the circumferential axis, being brought into contact with a large pipe. The dies are rolled backwards and forwards to apply pressure all around the pipe, to reduce its diameter to the desired size.

Third-person singular simple present indicative form of pilger

simple past tense and past participle of pilger

A rolling mill used in the pilgering process

plural of pilger mill