Carbon Structure Steel Bar Grade:1008-1572 series by ASTM,St12,13,14 Ck10-67 sereis by DIN,CR2,3,4,080M30-50 ... professional of supplying carbon structure steel cold draw and extruded bar and rod by standard GB/T799,ASTM A29,A108,A321 ... 1037,1043,1046,1053,1060,1566,1572By DIN: St12,13,14,Ck10,Ck15,Ck22,Ck25,Ck30,Ck35,Ck40,Ck45,Ck50,60 ... Dia 1-400mm 4.Packing: exporting packing Carbon Structure Steel Bar