Reference card for API 571, you can use it as a quick review book.Full description
API RP 577 Welding Inspection and
Defnitions Autogenous weld: A fusion weld made without ller 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 llet weld.
