SD390/490/400,B500B/GR460B,HRB400/500,ASTM A615 GR40/60 Standard BS4449,JIS,ASTM/A615 Length 6m,12m Application Widely used in construction industry for reinforcing concrete(Express way; office building, Bridge etc) Transportation By sea(20' 40' container, In different countries, rebar is produced based on different standards, and in each standard, there is a definite classification in relation to the mechanical properties of steel,