... ,SUP9,55Cr3,SUP10,50CrV4,SUJ2,100Cr6,SAE52100,etcGB, DIN, JIS, ASTMSquare bar25*25mm to 140*140mmFlat barWidth ... JO and S335JR or JOJISG3101,GB/T11263-1998,ASTM and BSForged steelRound barDia 200mm to 1000mmC22-C80, ... ,SAE52100,5CrNiMo,5CrMnMo,20CrMnTi,86CrMoV7,20CrNiMo,2CR13,4Cr13GB, DIN, JIS, ASTMSteel billetBillet100*100mm,120*120mm,130*130mm ... C55,C70,SAE5140,SAE4140,SUJ2,SUP9,etcGB, DIN, JIS, ASTM