... and so onSpecification: 10-40mm ProcessingProductsSpecificationGradeStandardHotrolledsteelRound barDia 12mm to 300mmSS400,Fe360,C22-C80,41Cr4,SAE5140,42CrMo4,SAE4140,SUP9 ... 100Cr6,SAE52100,etcGB, DIN, JIS, ASTMSquare bar25*25mm to 140*140mmFlat barWidth:25mm~200mm Thick:3~25mm Length: ... GB/T11263-1998,ASTM and BSForged steelRound barDia 200mm to 1000mmC22-C80,C22-C80,41Cr4,SAE5140,42CrMo4,SAE4140, ...