Apprentice question
Verify first
Verify before you commit. Cheap to catch now.
Do not hammer the spiral seam flat. Clean, seal, and wrap/repair it with the approved pressure-class method or replace defective pipe.
['A whistle from the factory spiral lock can mean a forming defect, damaged seam, oil-contaminated seal area, or pressure-class mismatch.', 'Find the exact leak, clean the seam, use approved sealant/wrap for that pressure class, and replace the section if the lockseam is mechanically open or failing.']