Q345 Steel, Q345A Q345B Q345C Q345D Q345E Equivalent astm a572 grade 65 steel chemical composition
Q345 Steel Properties and Introduction. 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. 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 and corrosion astm a572 grade 65 steel chemical composition
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hollow round steel