Article: tool steel flat bar Grade: SKD11, SKD61, etc. as customized Size: ... , Cr12Mo1V1, Tool steel flat bar Grade:SKD61, SKD11, Cr12Mo1V1 etc. as customizedSize:20-800mmLength:1-6m or as customizedQuality assurance:Ultrasonic Test ... , chemical engineering, electric power, automobile, coal feeder, aviation, space flight, tool and new steel varieties required by national defense construction, defense ...