English Name:Welding and allied processes - Recommendations for joint preparation - Manual metal-arc welding, gas-shielded metal-arc welding, gas welding, TIG welding and beam welding of steels.

Welding defects such as collapse of molten pool, burning through, would like to happen in the high efficient gas shielded metal arc welding.

Fracture toughness of both shielded metal arc welding and gas metal arc welding is almost the same.