Iso 17637 Pdf ((free)) -

Even thin-gauge TIG welds are inspected visually. Porosity less than 5% of the weld length is often accepted, but the inspector needs the precise table from the standard.

: Outlines what must be included in a final inspection report, such as the material type, welding process, and acceptance/rejection findings. Implementation and Resources iso 17637 pdf

Inspect individual runs/layers for cleanliness and visible defects like cracks or cavities before adding the next layer. Even thin-gauge TIG welds are inspected visually