騁毅金屬主營(yíng):無(wú)磁鋼20mn23alv,45mn17al3,50mn18cr4v,Mn13;合金鋼gcr15,40cr,42crmo,20crmnti,65mn,60si2mn,50crva;鋼管:12cr1mov,42crmo,Q345,20#