A square steel tube with a wall thickness of 70 mm is to be welded to a Q345R shell with a thickness of 12 mm – is post-weld heat treatment necessary? I would appreciate advice from experts
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A square steel tube with a wall thickness of 70 mm is to be welded to a Q345R shell with a thickness of 12 mm – is post-weld heat treatment necessary? I would appreciate advice from experts
Square steel tubes are also Q345R
Regardless of the wall thickness, residual stress remains after welding; therefore, heat treatment is required. If it is to be used in hydrogen-containing systems, hydrogen removal treatment must also be considered.
Since this square steel tube also serves as the equipment flange, a thickness of 70 is required for the analysis and calculations