... Bar Grade:1008-1572 series by ASTM,St12,13,14 Ck10-67 sereis by DIN,CR2,3,4,080M30- ... 50 series by BS,SPH Carbon Structure Steel ... professional of supplying carbon structure steel cold draw and extruded bar and rod by standard GB/T799,ASTM A29,A108,A321,A575 ... A29,A108,A321,A575,BS970,DIN1652,JIS G40512.Grade:By ASTM:1005,1006,1008,1010,1015,1020,1025,1030 ...