Brochure

127126
External concavity or insufficient fill.
The weld density is darker than the density of the pieces welded
and extending across the full width of the weld.
Excessive penetration.
A lighter density in the centre of the width of the weld image,
either extended along the weld or in isolated circular drops.
External undercut.
An irregular darker density along the edge of the weld image.
The density will always be darker than the density of the pieces
being welded.
Internal (root) undercut.
An irregular darker density near the centre of the width of the
weld image and along the edge of the root pass image.