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Vacuum-type backup bar speeds weld repairs
Authors
R. J. Carmody
Publication date
1 August 1964
Publisher
Abstract
A backup bar designed to use both vacuum and air pressure provides a method of sealing the weld root of a faulty section of seam weld. With slight redesign, the bar can be made sufficiently flexible to fit any large cylindrical surface
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Last time updated on 31/05/2013