标 准 编 号：JIS Z3312-2009 简体中文标题：低碳钢及高强度钢用金属极活性气体保护电弧实心焊丝繁体中文标题：低碳钢及高强度钢用金属极活性气体保护电弧实心焊丝English Name：MAG welding solid wires for mild steel and high strength steel...