... Certificates: ISO9001:2008, CE 1. UsageHydraulically operated high frequency welding machine, is suitable for PE, HDPE and PP ... -R pipes. 3. Easy to operate, display pressure, have watch to time, intelligent temperature control, self ... -locking to protect the pressure.3. Product Information Welding specificationDN1200, 1400,1600Working voltage380VFrequency50HZHeating ...