ROUNDED BAR USES SR, AN ACRONYM OF STEEL ROUND, AS ITS SIGN, AND IS A REBAR WHICH HAS NO NODES AND BUMPS OF RIB ON THE SURFACE, WHILE DEFORMED BAR USES SD, AN ACRONYM OF STEEL DEFORMED, AS ITS SIGN, AND IS A REBAR WHICH HAS NODES AND BUMPS OF RIB ON THE SURFACE.RNTHE SURFACE SHAPE OF REBAR CURRENTLY PRODUCED AT DAEHAN STEEL IS MARKED AS (G), WHOSE NODES HAVE A SHAPE IN THE FORM OF HORIZONTAL STRAIGHT LINE WITH REGULAR INTERVALS.RN

LIKE THE TABLE, COUNTRY CLASSIFICATION IS USED ACCORDING TO THE REBAR STRENGTH AND IN DAEHAN STEEL, KOREA'S CLASSIFICATION MARKS FOR DEFORMED BAR CLASSIFICATION SUCH AS SD300, SD350, SD400 (SD400W), SD500 (SD500W), SD600, SD700 OF KS D 3504 ARE USED. IN ADDITION, AS PER THE REBAR NAMES, TYPES OF D10~13 REBAR ARE MAINLY USED FOR FLOOR, MAIN REINFORCEMENT OF WALLS, HOOP, SLIGHT BASE AND TYPES OF D16~29 REBAR ARE USED FOR BASE AND MAIN REINFORCEMENT OF BEAM, AND D32 AND ABOVE ARE MOSTLY USED FOR MAIN REINFORCEMENT OF SPECIAL CASTING MATERIALS.