42crmo4 alloy steel round bars diameter:6-200mm,length:1m-6m grade:201,304,321,316,310,430,etc we export 8000tons in 2011. Description42 crmo4 alloy steel round barsMaterial201,202,304,304L,309S,310S,316,321,etcDiameterFrom 6mm to 200mmLength6m,5.8m,4m or as your requirementApplicationStainless steel bar applies to petroleum, chemical industry,electric power, boiler, high temperature resistant, ...