Q345B channel steel executive standard:The external implementation standard of Q345B channel steel is: GB/T709, and the internal implementation standard is: gb/t1591-94. Due to the implementation of the standard, this type of steel plate is allowed to be delivered with negative tolerances. The latest implementation standard is GB/T1591-2008.
Q345B channel steel characteristics:Good overall performance, good low temperature performance, cold stamping performance, good welding performance and machinability. Widely used in bridges, vehicles, ships, buildings, pressure vessels, etc.
Q345B channel steel is divided into ordinary channel steel and light channel steel. The specification of hot-rolled ordinary channel steel is 5-40#. The specifications of hot-rolled flexible channel steel supplied by agreement between the supply and demand parties are 6.5-30#. Channel steel Q345B is mainly used in building structures, vehicle manufacturing and other industrial structures. Channel steel is often used in conjunction with I-beam.
