Document Type and Number:
Japanese Patent JPS571322
Kind Code:
B2
Abstract:
Rolling mill for forming seamless pipes from round billets, comprising a rotary piercing mill or a punch press for shaping billets into hollow blocks, a cross conveyor leading to a planetary rolling mill for the rolling of the hollow blocks on a mandrel into seamless pipe, followed by stretch-reducing rolling mill for rolling the seamless pipes into a finished product.
Application Number:
JP15185577A
Publication Date:
January 11, 1982
Filing Date:
December 19, 1977
Export Citation:
International Classes:
B21B19/02; B21B19/06; B21B23/00
Next Patent: JPS571323