... machine used to coil plate into different sharps such as cylindrical form, conic form and arc, it adopted Japan hydraulic t ... machine used to coil plate into different sharps such as cylindrical form, conic form and arc, it adopted Japan hydraulic technical ... remain catheter≤2.5 times of plate thickness. 2. Bending precision, roundness, linearity, ends surface error all less than 3mm/M ...