... C45/ JIS S45C/GB 45 2,c45 carbon steel 3,carbon steel s45c 4,c45 hot rolled steel 5,flat bar s45c Sichuan Liaofu Special ... Steel Trading Co., Ltd.aisi 1045 / din 1.1191 / ck45 ... /DIN C45/ JIS S45C/GB 452,aisi 10453,sae 10454,hot rolled steelApplication: used for making shaft parts, etc.