... ,PP,PVDF plastic pipe or pipe fittings From 90 to 250 mm JNB250/90-1 manual butt welding machineBasic technical parameter:ModelJNB250 ... /90Pipe size (mm)90,110,125,140,160,180,200,225,250Heating plate Max. temp.250Temp. deviation ... PE PP and PVDF plastics pipes and /or fittings from 90-250mm2 can work in trenches, worksite and workshop3 two main ...