A PAIR OF ROLLERS FOR ROLLING PROFILE BARS, HAVING MULTIPLE COUPLES OF GROOVES OF WHICH SHAPES ARE DIFFERENT EACH OTHER

摘要

Disclosed is a pair of first and second rolling rollers for pressing a wire or rod therebetween so as to form a profile bar of a predetermined sectional shape. The first and second rolling rollers are defined on outer surfaces thereof with two to eight pairs of grooves in a manner such that profile bars of different sectional shapes can be formed by the first and second rolling rollers.