美利体育登录入口官网:LST EN ISO 17632:2008 焊接材料 非合金钢和细晶粒钢的气体保护和非气体保护金属电弧焊用管状药芯焊条 分类(ISO 17632:2004)
Welding consumables - Tubular cored electrodes for gas shielded and non-gas shielded metal arc welding of non-alloy and fine grain steels - Classification (ISO 17632:2004)