TinnerFlow™2nd YearSheet Metal Work
Before rolling any elbow segment, mark the centerline and seam position on the flat blank. Roll to a test cylinder first and verify seam location. Seams s…
Before rolling any elbow segment, mark the centerline and seam position on the flat blank. Roll to a test cylinder first and verify seam location. Seams should land in a low-turbulence zone, not on the throat or heel.
Do not hide, force, cover, or “make it work” if this affects safety, access, airflow, rated assemblies, supports, equipment, or inspection. Stop and verify the approved correction.