manufacturer / supplier in China, offering Manufacturer Direct 1035 1039 1040 SAE 1035 ASTM A29 Cold Drawn Round Steel Bar, Fast Delivery 30CrMoA 35CrMoA 42CrMoA En 10083 Cold Drawn Square Steel Bar, Premium Quality 1050 1051 1052 SAE 1050 ASTM A108 Cold Drawn Flat Steel Bar and so on.