Porcelain heater, Porcelain heaters are made of fluted circular porcelain beads through which a spirally wound resistance wire is inserted.These porcelain beads sustain higher temperature & help in better heat transfer.Porcelain heaters coupled with S.S 304, 310, 310L, Titanium & glass sheaths can be used for immersion heating.These heaters can be made in single, two & three phases