Standard Reference
EN 10253/2 Type A – reduced load factor
EN 10253/2 Type B – full load factor
Material
e.g.: P 235 GHTC1, P 265 GH, 1.4541, 1.4571
Specification Sheet
This Part of EN 10253 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.
NOTE In the case of a harmonised supporting standard for materials, presumption of
conformity to the ESRs is limited to technical data of materials in the standard and does
not presume adequacy of the material to a specific item of equipment. Consequently it is
essential that the technical data stated in the material standard be assessed against the
design requirements of this specific item of equipment to verify that the ESRs of the PED
are satisfied.
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