Reinforcing Steel Bar 1).Standard:BS4449 ASTM A 615 2).Grade:HRB335/400/500,460B,GR40/60 3) Experience : 5years for export Reinforcing Steel Bar Tianjin Baolf Steel Co.,LimitedStandardBS4449 ASTM A615 GB/T1499Grade HRB335/400/500,460B,GR40/60 Diameter6-50mmLength6,9,12mTechniqueHot RolledApplicationFor Construction Reinforcing Steel Bar