BS EN 10253-2-2007 Butt-welding pipe fittings-Non alloy ferritic alloy steels with specific inspection requirements

1 Scope

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.

2 Normative references

The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

EN 287-1, Qualification test of welders — Fusion welding — Part 1: Steels

EN 910, Destructive tests on welds in metallic materials — Bend tests

EN 1418, Welding personnel — Approval testing of welding operators for fusion welding and resistance weld setters for fully mechanized and automatic welding of metallic materials

EN 10002–1, Metallic materials — Tensile testing — Part 1: Method of test at ambient temperature

EN 10002–5, Metallic materials — Tensile testing — Part 5: Method of testing at elevated temperature

EN 10020:2000, Definition and classification of grades of steel

EN 10021:2006, General technical delivery conditions for steel products

EN 10027-1, Designation systems for steels — Part 1: Steel names

EN 10027-2, Designation systems for steels — Part 2: Numerical system

EN 10028-2, Flat products made of steels for pressure purposes — Part 2: Non-alloy and alloy steels with specified elevated temperature properties

EN 10028-3, Flat products made of steels for pressure purposes — Part 3: Weldable fine grain steels, normalized

EN 10028-4, Flat products made of steels for pressure purposes — Part 4: Nickel alloy steels with specified low temperature properties

EN 10045–1, Metallic materials – Charpy impact test — Part 1: Test method

EN 10052:1993, Vocabulary of heat treatment terms for ferrous products

EN 10168, Steel products — Inspection documents — List of information and description

EN 10204, Metallic products — Types of inspection documents

EN 10217-1, Welded steel tubes for pressure purposes — Part 1: Non-alloy steel tubes with specified room temperature properties

EN 10217-2, Welded steel tubes for pressure purposes — Technical delivery conditions — Part 2: Electric welded non-alloy and alloy steel tubes with specified elevated temperature properties

EN 10217-3, Welded steel tubes for pressure purposes — Technical delivery conditions — Part 3: Alloy fine grain steel tubes

EN 10217-4, Welded steel tubes for pressure purposes — Technical delivery conditions — Part 4: Electric welded non-alloy steel tubes with specified low temperature properties

EN 10217-5, Welded steel tubes for pressure purposes — Technical delivery conditions — Part 5: Submerged arc welded non-alloy and alloy steel tubes with specified elevated temperature properties

EN 10217-6, Welded steel tubes for pressure purposes — Technical delivery conditions — Part 6: Submerged arc welded non-alloy steel tubes with specified low temperature properties

EN 10246-10, Non-destructive testing of steel tubes — Part 10Radiographic testing of the weld seam of automatic fusion arc welded steel tubes for the detection of imperfections

EN 10246-11, Non-destructive testing of steel tubes — Part 11Liquid penetrant testing of seamless and welded steel tubes for the detection of surface imperfections

EN 10246-12, Non-destructive testing of steel tubes — Part 12Magnetic particle inspection of seamless and welded ferromagnetic steel tubes for the detection of surface imperfections

EN 10266:2003, Steel tubes, fittings and structural hollow sections — Symbols and definitions of terms for use in product standards

EN 10273, Hot rolled weldable steel bars for pressure purposes with specified elevated temperature properties

EN 13480-3:2002, Metallic industrial piping — Part 3: Design and calculation

EN ISO 377:1997, Steel and steel products — Location and preparation of samples and test pieces for mechanical testing (ISO 377:1997)

EN ISO 2566-1, Steel — Conversion of elongation values — Part 1: Carbon and low alloy steels (ISO 2566-1:1984).

EN ISO 3166-1, Codes for the representation of names of countries and their subdivisions — Part 1: Country codes (ISO 3166-1:2006)

EN ISO 6708, Pipe work components — Definition and selection of DN (nominal size) (ISO 6708:1995)

EN ISO 14284, Steel and iron — Sampling and preparation of samples for the determination of chemical composition (ISO 14284:1996)

EN ISO 15614-1, Specification and qualification of welding procedures for metallic materials – Welding procedure test — Part 1: Arc and gas welding of steels and arc welding of nickel and nickel alloys (ISO 15614- 1:2004)

ISO 1027, Radiographic image quality indicators for non-destructive testing — Principles and identification 

Research use only,Commercial use is prohibited. 

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