... :ASTM615 BS4449 B500B,etc steel bars|:quality: AST615 BS4449 B500B HRB300 HRB400 ... ,55Cr3,SUP10,50CrV4,SUJ2,100Cr6,SAE52100,etcGB, DIN, JIS, ASTMSquare bar25*25mm to 140*140mmFlat barWidth:25mm~200mm ... ,5CrNiMo,5CrMnMo,20CrMnTi,86CrMoV7,20CrNiMo,2CR13,4Cr13GB, DIN, JIS, ASTMSteel billetBillet100*100mm,120*120mm,130*130mm,150*150mmSS400 ... C55,C70,SAE5140,SAE4140,SUJ2,SUP9,etcGB, DIN, JIS, ASTM steel bars