... etc. 2. Precise with only 0.05mm tolerance. 3. With CNC machine. 1. Description: Roller and mould, welded pipe roller, stainless steel ... tube, oval tube, fan-shaped tube, polygonal tube, single and double groove pipe, tube frame, special-shaped mould, etc.3. ... per crown. CNC machining of Japan, high precise; 10 years experience in RD, the fingerprints, mechanical pattern, on the corner, concave ...