hot rolled carbon steel flat bar Grade: SS400, ST37-2, A36, S235JRG1, Q235, Q345. ... , boilers making ,etcFounded in 2000, we are a leading steel enterprise in China, located in Fengrun District, Tangshan City, close to the ... , I-beam, H-beam, deformed bar, round bar, steel pipe, steel plate and more. Under the Operating Principle of "honesty as the ...