Patent ID: 8436278

Claim:
A method for joining two metal parts, the method comprising: initially positioning the two metal parts to be joined relative to one another separated by a centering offset forming a narrow gap between the two metal parts and creating a relief region in a seam-bottom area, said gap extending to outer surfaces of the two metal parts; and thereafter joining together flanks of the metal parts which delimit the narrow gap with tungsten inert gas welding and forming welding beads which fill the narrow gap, including forming a predetermined melt-through point; wherein the narrow gap has a continuously constant width (a) between 8-12 mm, the width (a) of the narrow gap being selected so that welding beads lying one above the other each extend over the entire width (a) of the narrow gap, and the entire narrow gap being fully automatically filled with the welding beads to said outer surfaces of the two metal parts.