... SDR17 HDPE pe 100 fittings:Reducing Tee Size from 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,Reducing Tee,Equal Tee.End ... water, oil filed,mine, chemical industry, irrigation and drainage ect 3. Certification: ISO9001:2000,CE, GMC Certificate approval ...