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...