1 Scope

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.