System design for MF induction heating seam annealer is mainly the fix of power and fre., design of inductor and cooling system M.F. Induction Heating Seam Annealer is mainly for steel pipe seam annealing treatment,Brief Introduction: 1. Isolation step up transformerStep up the line-in voltage from 380V to 460V,and step up the annealing power supply DC voltage from 500V to 600V,which can improve ...