DIN EN ISO 17634:2015 焊接用品.气体保护金属弧焊耐儒变钢用管芯焊条.分类(ISO 17634-2015);德文版本EN ISO 17634-2015
Welding consumables - Tubular cored electrodes for gas shielded metal arc welding of creep-resisting steels - Classification (ISO 17634:2015); German version EN ISO 17634:2015