... 2. Dia: 10-50mm 3. Hot rolled, black surface BS4449 deformed steel bars quality: AST615 BS4449 B500B HRB300 HRB400 HRB500 and so ... ,S275JR or JO and S335JR or JOJISG3101,GB/T11263-1998,ASTM and BSForged steelRound barDia 200mm to 1000mmC22-C80,C22-C80 ... ,C45,C55,C70,SAE5140,SAE4140,SUJ2,SUP9,etcGB, DIN, JIS, ASTM