NF A81-350:2008 Welding consumables - Tubular cored electrodes for gas shielded and non-gas shielded metal arc welding of non-alloy and fine grain steels - Classification.
2008NF A81-350:2008 Welding consumables - Tubular cored electrodes for gas shielded and non-gas shielded metal arc welding of non-alloy and fine grain steels - Classification.
1997NF A81-350:1997 Welding consumables. Tubular cored electrodes for metal arc welding with and without a gas shield of non aloy and fine grain steels. Classification.