Welding method

A method for welding a first hose end at a joint with a second hose end in a seam that extends on a circumference of the first hose end, the method comprising the steps:

• applying a protective layer at the joint to an inside of the first hose end;
• pushing the second hose end beyond the joint over the first hose end;
• pressing the first hose end and the second hose end together fiat at the joint between two first clamping jaws that are moved towards each other;
• welding the first hose end and the second hose end together by two first partial seams while pressed together, wherein the protective layer prevents a welding of the inside of the first hose end;
• releasing the first hose end and the second hose end from the two first damping jaws after welding the two first partial seams;
• pressing the first hose end and the second hose end together again flat transversal to the first partial seams by two second clamping jaws;
• and
• welding the first hose end and the second hose end in two second partial seams so that the first partial seams and the second partial seams form the seam.