Article: Round steel bar Grade: 42CrMo, S45C, etc. as customized Size: 80-800mm Length: ... /6m fixed length with UT Article: 42CrMo, S45C, forged round steel bar Grade:42CrMo, S45C, AISI 1045, 20CrMo, SNCM439 etc. as customizedSize ... power, automobile, coal feeder, aviation, space flight, tool and new steel varieties required by national defense construction, defense production and national ...