4340 40CrNiMo22

  Production progress  Round bar  EAF+LF+VD+ ESR +FORGED  –FORGED/ROLLED-ANNEALEDCONDITION       Flat Bar  EAF+LF+VD+ ESR +FORGED(910)  –FORGED/ROLLED(850)-ANNEALED CONDITION  Hardness:≤2...

2019-12-17 12:35