REINFORCEMENT STEEL / TMT REBAR PRODUCT QUALITY : Various international standards, viz. IS:1786 Grade Fe415/ Fe500/ Fe550 / Fe 600 / Fe 415D/Fe 500 D/ Fe 550 D / Fe 500 S of BIS of India, ASTM A615 Grade 60 of the USA, BST 500 of DIN 488 of Germany, BS 4449 Grade 460 of Great Britain etc.