http://en.wikipedia.org/wiki/Plasma_arc_welding 2.1 Plasma arc cutting 4 External links [الإنجليزية] Plasma arc welding Plasma arc welding plasma arc welding Plasma arc 1.1 Gases [الإنجليزية] Source [الإنجليزية] Plasma arc welding 2 Other plasma arc processes plasma arc welding Plasma arc welding Plasma arc welding Plasma arc welding 1.2 Materials Plasma arc welding 1 Process variables 1.3 Key process variables Plasma arc welding Plasma arc welding 3 Further reading [الإنجليزية] Plasma arc welding plus de détails en anglais http://en.wikipedia.org/wiki/Plasma_arc_welding plus de détails en anglais