hot rolled carbon steel flat bar Grade: SS400, ST37-2, A36, S235JRG1, Q235, Q345. ... We supply high quality hot rolled flat bar with reasonable price. Material: SS400, ST37-2, A36, S235JRG1, Q235, Q345 etc.Thickness ... , I-beam, H-beam, deformed bar, round bar, steel pipe, steel plate and more. Under the Operating Principle of "honesty as the ...