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API RP 577 Welding Inspection and

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API RP 577

Welding Inspection andMetallurgy

DefinitionsAutogenous weld: A fusion weld made without filler metal. (The most common of these types of welds is made on tubing and performed with Gas Tungsten Arc Welding often using an automated welding device).

Actual throat: The shortest distance between the weld root and the face of a fillet weld.