标 准 号：DIN 17223-2-1990 简体中文标题：非合金钢调质弹簧钢丝及调质阀门弹簧钢丝繁体中文标题：非合金钢调质弹簧钢丝及调质阀门弹簧钢丝English Name：Round spring steel wire ; oil quenched and tempered spring steel wire of unalloyed and alloyed steels; technical delivery conditions...