美利体育登录入口官网:LST EN ISO 17632:2016 焊接材料 用于保护气体下和无保护气体下非合金钢和细晶粒钢的埋弧焊丝 分类 (ISO 17632:2015)
Welding consumables - Tubular cored electrodes for gas shielded and non-gas shielded metal arc welding of non-alloy and fine grain steels - Classification (ISO 17632:2015)