... specialized in manufacturing various grader blade for all brands of Motor grader, Bulldozers,Excavator,Loader and Scraper.A) Part No.: Grader ... steel or boron steelC) Hardness: HB260~320 or HB380~450 D) For brands:Komatsu, ESCO, Fiat, Hyundai, Case, Sany etc.E ... grader blade and other products. Antiwear heavy equipment spare part motor grader blade 5D9553