Welding procedure qualification discussions
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The weld evaluation was conducted on 6mm-thick steel plates; impact testing was performed, and the root metal coverage range was 6–12mm. Can this range be used as the root metal coverage range of 1.5–12mm when impact testing is not required?
Can this weld assessment be used for conditions of 1.5–6 without impact testing?
No. Because the weld evaluation for 6mm thick steel plates allows for impact testing. And you don’t do it. When it is not possible to prepare small-sized impact specimens due to standard requirements, the impact test may be omitted. Let’s make it again using a board of 5mm or less.
Assuming I use a weld evaluation based on pipe materials and cannot prepare impact specimens, can it be used for welding 1.5–6 mm base metals?
Were post-weld stress-relief heat treatments performed on the Fe-1-2 and Fe-8-1 welds?
The weld evaluation was conducted on 6mm thick steel plates, and impact resistance was tested; when impact performance is not required for the product, this evaluation result from the impact test can be used. The base material coverage range is 1.5–12
The weld evaluation was conducted on 6mm thick steel plates, and impact testing was required; in other words, the base material needs to undergo impact tests. What does the instructor mean by saying that the product does not require impact performance? Here, since the thickness of the pipe used is less than 6 mm, can this weld assessment be applied?
Please specify the exact standards and materials. . . . Then I’ll analyze it
According to NB/T47014-2011, with the material being Q345R, a weld evaluation for butt welding of 6mm thick plates has already been completed. Now, there is butt welding of steel pipes with a wall thickness of 5.5mm; is it necessary to redo the weld evaluation? Can this weld evaluation cover the 5.5mm wall thickness without conducting impact tests?
For S30408 pressure equipment welded, is there any weld assessment regarding post-weld stress relief heat treatment?