Electrostatic dust precipitators porcelain bushing is used as airproofing and high-voltage insulating on the part where the corona electrode suspending frame pass through the field shell.

According to the shape character, electrostatic dust precipitator porcelain bushings can be classified as:
vertical bushing
pyramidal bushing
profiled bushing

The bushings can operate well under 250 Centigrade temperature. Its operate voltage is 72~100kV and the Min. compression failing load is 500kN. Both of the inner and outer surface is glazed white, grey or brown. The two ends of the bushing is ground.