The thesis deals with the control of setting the position of the welding head on the line welded tubes with spiral weld. The industrial line is located in the premises of large metallurgical company in Silesian region. It is able to produce tubes in the diameter range from 323.9 mm to 820.0 mm. The tubes are manufactured according to the world standards (ISO, EN, API, DIN, ASTM, NF, BS, GOST, ČSN, etc.). The current low-level solution is expanded by the laser system which consists of three separate lasers, one linear laser and two spotted lasers which get information about material position and future weld position. Information from laser system are processed to setting position of the welding head by image processing, applying color filters to get clear data and in the end applying special algorithms to get the optimal position of welding head. Also information is showed in image of camera output for line worker.Keywords: Line weld, spiral weld, welding head, laser.
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