NF A 81-313
NF A 81-313 (Welding consumables - Wires electrodes, wires and rods for arc welding of stainless and heat-resisting steels - Classification)· AFNOR NF (France) · 46 materials
NF A 81-313 (Welding consumables - Wires electrodes, wires and rods for arc welding of stainless and heat-resisting steels - Classification)· AFNOR NF (France) · 46 materials