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Cold Pilgering
A cold working process using reciprocating ring dies and a tapered mandrel to reduce tube diameter and wall thickness simultaneously, achieving high reduction ratios and excellent dimensional precision.
Cold Pilger Process
Cold pilgering is the primary cold reduction method for seamless tubes. A tube blank (mother tube) is fed incrementally between reciprocating ring-shaped dies over a tapered mandrel, progressively reducing both OD and wall thickness.
Advantages
- Reduction ratio up to 80% in a single pass
- Excellent wall thickness uniformity
- Superior surface finish
- High production rates for small diameters