DS/EN ISO 17633:2021 焊接材料“不锈钢和耐热钢的气体保护和非气体保护金属电弧焊用管状药芯焊条和焊条”分类“修正案 1(ISO 17633:2017/Amd 1:2021)
Welding consumables – Tubular cored electrodes and rods for gas shielded and non-gas shielded metal arc welding of stainless and heat-resisting steels – Classification – Amendment 1 (ISO 17633:2017/Amd 1:2021)