Handy, mobile plastic welding machine for PE, PP, PVDF and PB for use in the workshop and on the building site. Par- ticularly suitable for sanitary installations and wastepipes. The diameters are selectable from OD 50 to OD 160 mm, OD 50 to OD 250 mm and OD 50 to OD 315 mm. Ma- chine with electrically opera- ted planer, electronical hea- ting element, basic clamping tool divided into two parts (except for WIDOS 2500 OD 160 mm), each side swivelling up to 15° with clamping ins- erts and pipe support as well as transport and mounting crate for safe, clean and pro- tected storage. If desired there is a combined butt/socket welding machine available. Versions also in 110 V, °F or with lbs-force- display.