... to weld various window frames or sashes at the same time. The machine has four heads and ... motion pare, small fit clearance; Good rigidity of whole machine; Precise parts and strictly assembling process, high ... with the European standard, ensured high welding corner strength and small fluctuation range.Two-step clamping ... Dimension: 5000mm×1200mm×2000mmlWeight: 2700kg Four Head Welding Machine