For attached Heavy-Duty Bed Bracket Material : Q235 Surface : zinc coating Hongtuo Manufacturing capabilities(OEM ... can be provide : stamping,bending ,welding ,threading ,frinding ,milling ,machining ,lathe ,assembing,etc.3.Pree:5MT-200MT4.Finish : anodizing ,powder -coating ... ,machine.and so on6.Certificate: GS,ROHS,ISO 9000-2001 Bed Bracket(bed accessories)