... 25x20mm to 400x315mm Our fittings including Electrofusion Fittings,Butt fusion Fitting,Socket Joint Fitting,PE Ball Valves Fittings,PE/Steel Transition Fittings,etc. Including Reducer,,Coupler ... : PE100/PE80,SDR11 /SDR17, According to customers inquire2. Used in gas, water, oil filed,mine, chemical industry, irrigation and drainage ect ...