GB/T1591 Q345 steel include Q345A, Q345B, Q345C, Q345D, Q345E steel.
GB/T1591 Q345 steel plate external implementation of the standard is: gb709, the internal implementation of the standard is: gb/t1591-94, due to the reasons for the implementation of the standard, such as the negative tolerance of the steel plate. The latest implementation of the standard is GB/T1591-2008.
Q345 steel plate has good comprehensive mechanics performance, low temperature performance can, plasticity and good weldability, used in pressure vessels, tanks, vehicles, cranes, mining machinery, power plants, bridges and other bear the dynamic load of the structure, machinery parts, building structure, the general structure of the metal pieces, the use of hot-rolled or normalized state, for the various structures of - 40 DEG C in cold regions.
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