Gas Metal Arc (GMA) welding is widely used in the world manufacturing industry of modern metal
structures, such as buildings, bridges, yellow goods, thanks, pressure vessels, piping, pipelines, etc.,
ensuring high-efficiency and high-quality semiautomatic, automatic and robotic welding. This paper
describes the basic physical and technological backgrounds of GMA welding process and provides
comprehensive analysis of the influence of basic GMA welding parameters on efficiency of welding and
the quality of welded joints. Examples of GMA welding applications are given.
