标 准 号：DIN EN 499-1995 简体中文标题：焊料.非合金钢和细粒钢的手动金属电弧焊接用涂剂焊条.分类繁体中文标题：焊料.非合金钢和细粒钢的手动金属电弧焊接用涂剂焊条.分类English Name：Covered electrodes for manual metal arc welding of nonlalloy and fine grain steels Classification...