spring flat bar thick : 1.0--45 wide : less than 350 longth : by order grade : SUP 3, SUP6, SUP7 , SUP9 , SUP10 spring ... bar all the time , the detail information is as flw :1,Grade: GB: 65Mn ,55Si2Mn , 60Si2Mn ,55CrMnA ,60CrMnA ,50CrVA, 60CrMnBA,55SiMnVBA , ... 0300.03032160CrMnBA51B60SUS1158CrMnB40.56-0.640.17-0.370.70-1.000.70-1.00 0.0005-0.0040.0300.03032155SiMnVB51B60SUS1158CrMnB40.52-0 ...