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Rollennahtschweissen. Widerstandsschweien Prinzipskizze Rollennahtschweien own original caption Eigenproduktion br de Wdwd CommonsHelper Tserc de Tserc Original upload log page de Rollennahtschweissen Tserc bytes no Beschreibung Widerstandsschweien Prinzipskizze Rollennahtschweien Quelle Eigenproduktion Zeichner Tserc