Carbon steel profiles are the abbreviation of complex and profiled section steel. It belongs to one kind of profiled steel and is different from simple section steel. According to the different technology, it can be divided into hot rolled profiled steel, cold drawn profiled steel, cold bended profiled steel, welded profiled steel and so on. Usually profiled steel refers to hot rolled profiled steel. Hot rolled profiles are hot rolled profiles that distinguish square, round, flat and common shapes.