Q235B I Beam has an I-shaped cross section, reasonable force, strong bending and shear resistance, and high load-bearing efficiency. It is made of carbon steel or alloy steel, with high strength and good toughness. It has various specifications to meet different load-bearing requirements. It is easy to weld and cut, convenient to install, and cost-controlled. It is widely used in construction, bridges, machinery and other fields. It is an efficient and reliable structural material.