... 4.Used in gas,water,oil,etc HDPE Electrofusion Reducer FITTINGSSize from dia 25*20mm t0400*315mmWe supply many ... of Electrofusion series fittings with wide range, including elbow, coupler ,reducer ,tee ,saddle.and combined electrofusion (electric-melting) series :combined ... electric-melting knee(elbow),tee,cap,reducer ,flange etc..the material is PE80 and PE100 imported from ...