BS EN 10253-2 specifies the technical delivery requirements for seamless and welded butt-welding fittings (elbows, concentric and eccentric reducers, equal and reducing tees, caps) made of carbon and alloy steel which are intended for pressure purposes at room temperature, at low temperature or at elevated temperatures, and for the transmission and distribution of fluids and gases. It specifies:

type of fittings - type A : Butt-welding fittings with reduced pressure factor

type B : Butt-welding fittings for use at full service pressure

steel grades
mechanical properties
dimensions and tolerances
requirements for inspection and testing
inspection documents
marking
protection and packaging.

BS EN 10253-2:2007

Abstract

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