... S45C C45 CK45 Cm45 AIIS1045 SAE1045 ASTM1045 XC45 carbon structural steel high quality Grade: 45# 45B S45C C45 CK45 Cm45 AIIS1045 ... well,Used for making normal mechinery parts,such as bolt,chain,pull rod,shape steel,steel plate,flat bar steel and ... . Our main products are H beam steel, angle steel, round steel, steel billet, strip steel, gear steel, twisted steel, channel steel, etc. All these products ...