BUTT WELDING MACHINE TRAINING VIDEO VID_LYCO4K9SMQC THE BUTT FUSION TECHNIQUE DOES NOT REQUIRE ADDITIONAL COUPLERS. THE TWO PIPES TO BE JOINED TOGETHER ARE CUT TO LENGTH BEFORE THE WELDING AND CLAMPED IN THE BASIC MACHINE WITHOUT STRESS OR MISALIGNMENT. THE PIPE FACES ARE THEN PLANED PARALLEL TO EACH OTHER. THEN BOTH PIPE ENDS ARE SIMULTANEOUSLY BROUGHT INTO CONTACT WITH A HEATING ELEMENT WHICH TRANSFERS HEAT ENERGY TO THE PIPE FACES..HTML