... 3.EN Standard,GB Standard 4.SDR11/SDR17 HDPE pe 100 fittings:Reducing Tee Size from 25x20mm to 400x315mm ... Electrofusion Fittings,Butt fusion Fitting,Socket Joint Fitting,PE Ball Valves Fittings,PE/Steel Transition Fittings,etc. Including Reducer,,Coupler,Reducing ... . Certification: ISO9001:2000,CE, GMC Certificate approval by INTERTEK4. Product Standard: EN1555-3, EN12201-3. GB15558.2,GB13663.2 Our ...