... Maximum diameter :1200mm Maximum length :13m SCM440 Alloy Round Steel Bar TypeStandard SpecificationGB/TASTM DIN JISISO Carbon steel 20#1020C20S20C--- 35# ... : ultrasonic test as per SEP 1921-84 3C/cAlloy tool steel9SiCr 90CrSi5------7.Certs:ISO9001:2000,LR,ABS,GL,CCS ... ships,vehicle,aircraft,missile,weapons,railways,bridge,pressure vessel,machine tool,gear in gearbox,gear shaft,cam,worm,claw clutch,etc ...