Butt-welding pipe fittings - Part 3: Wrought austenitic and austenitic-ferritic (duplex) stainless steels without specific inspection requirements

This document specifies the technical delivery requirements for seamless and welded butt-welding fittings (elbows, concentric and eccentric reducers, equal and reducing tees, caps) made of austenitic and austenitic-ferritic (duplex) stainless steel without specific inspection requirements. This document specifies: — steel grades and their chemical compositions; — mechanical properties; — dimensions and tolerances; — requirements for inspection and testing; — inspection documents; — marking; — handling and packaging.