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| gas metal-arc welding (The welding process that produces coalescence of metals through heat generated by an arc (or arcs) created between a continuous consumable electrode and the work product. All gas used for shielding during the welding process is externally supplied and may be pure inert gas or a mixture of inert gases. Gas metal-arc welding does not require pressure, and the electrode provides the filler metal.(Oil and Gas Field Glossary) Alexander Demidov) | |||