NF A87-013-3/A1:2004 Welding and allied processes - Recommendations for joint preparation - Part 3 : metal inert gas welding and tungsten inert gas welding of aluminium and its alloys.
2004NF A87-013-3/A1:2004 Welding and allied processes - Recommendations for joint preparation - Part 3 : metal inert gas welding and tungsten inert gas welding of aluminium and its alloys.