Professional models of welding machines in benchtop design. Suitable for extra long welds up to 600 or 800 mm (depending on modification). The lower jaw is positioned only 28 mm above the work table. These welders are equipped with a thermistor (transformer thermal protection) as standard. The 800 mm welding length variant is equipped with a built-in foil unwrapper. These welding machines are available in two versions: - A) with 2 mm welding filament - for sealing foil bags (max. foil thickness 0,150 mm) - B) with welding wire - for the production and sealing of foil bags in the shape of a half-shadow - the foil is simultaneously welded and melted (max. foil thickness 0,080 mm). For this version a table-top unwrapper for films up to 600 mm wide can be purchased. This model is designed for welds up to 600 mm. (For these models, it is necessary to specify the required version in the order - 2 mm planchet or welding wire).