... C/c 2. Payment terms:TT/LC at sight Carbon Steel Round Bar S45C/CK45/C45/1045 1.Standards ... 4.Factory condition:Annealed to HBS<220;hot rolled,black.5.Application:Used for making die-board,general ... such as alloy structural steel, alloy tool steel, carbon structural steel, carbon tool steel, plastic mould steel, hot work steel, ... 420/S136H&S136 5140/40Cr/1.7035 Carbon Steel Round Bar S45C/CK45/C45/1045