Article: Steel round bar Grade: SCM440, AISI 1045, etc. as customized Size: ... /6m fixed length with UT Article: SCM440, AISI 1045, SCM420, Mold steel round bar Grade:42CrMo, S45C, AISI 1045, 20CrMo, SNCM439 etc ... power, automobile, coal feeder, aviation, space flight, tool and new steel varieties required by national defense construction, defense production and national ...