... , etc. 2. Precise with only 0.05mm tolerance. 3. With CNC machine. 1. Description: Roller and mould, welded pipe roller, stainless steel ... leading provider of technology per crown. CNC machining of Japan, high precise; 10 years experience in RD, the fingerprints, mechanical pattern, ... corner, concave angle phenomena, and to form tolerance of roundness in les than 0.05mm, square tube on the angle does ...