The article presents the experimental results demonstrating the influence of welding torch positioning parameters on the overlap joint formation. Effect of welding torch tilt angle and its displacement relative to joint and lap joint assembly gap on joint formation quality was evaluated. The general recommendations for choosing the welding torch positioning parameters depending on joint gap size were established.

The results of steel sheet lap joint strain-stress state are presented. Welding joint parameters requirements are analyzed. The effect of 2 mm welded joint parameters and shape on the strain-stress state using ANSYS software package is studied.