mash seam weld

mash seam weld

[′mash ′sēm ‚weld]
(metallurgy)
A seam weld at a lap joint in which the overall lap thickness is reduced plastically to the approximate thickness of one of the lapped parts.
References in periodicals archive ?
The cylinder is then pushed into welding wheels where the vertical side seam is mash seam welded. The edges of the blank are forced into a "Z" bar for overlap control during the welding process.