标 准 编 号: DIN EN 758-1997 简体中文标题:焊接材料.带和不带气体保护的合金钢以及细晶粒钢电弧焊用管状焊条.分类 繁体中文标题:焊接材料.带和不带气体保护的合金钢以及细晶粒钢电弧焊用管状焊条.分类 English Name:Welding consumables - Tubular cored electrodes for metal arc welding with and without a gas shield of non alloy and fine grain steels - Classification;