reducer decorated capitulum, reducer, and went all the way through.One of chemical pipe fittings, used for the connection between the two different diameter of pipe.According to the shape of the different, divided into concentric big small head and eccentric reducer.Size head size materials including stainless steel (304304 l316316l), alloy steel, carbon steel reducer, reducer made of 20 # steel and Q235, Q345, 16 mn etc