Q345 Steel Properties. Q345 steel is a Chinese GB standard Low Alloy High Strength Structural Steel, material density is 7.85 g/cm3, tensile strength is 470-630 Mpa, and yield strength is 345 MPa, it has better properties than Q235.According to GB/T 1591 2008, Q345 material has 5 quality grades Q345A, Q345B, Q345C, Q345D and Q345E. Q345 steel has good weldability, cold & hot workability gbt 8162 20(plate) Some results are removed in response to a notice of local law requirement. For more information, please see here.(plate)GB/T 8162 20# Structure tube Pipe,GB/T 8162 20# Structure gbt 8162 20(steel) GB/T 8162 20# steel Application Used in general structure and mechanism, including construction, machinery, transportation, aviation,petroleum mining and each kind of structure tubes.
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