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BS EN 10253-3:2008

Current
Current

The latest, up-to-date edition.

Butt-welding pipe fittings Wrought austenitic and austenitic-ferritic (duplex) stainless steels without specific inspection requirements
Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

31-12-2008

Foreword
Introduction
1 Scope
2 Normative references
3 Terms, definitions and symbols
   3.1 Terms and definitions
   3.2 Symbols
4 Classification of grades and designation
   4.1 Classification of grades
   4.2 Designation
5 Information to be obtained from the purchaser
   5.1 Mandatory information
         5.1.1 Designation of fittings
         5.1.2 Information
   5.2 Options
   5.3 Examples of an order
         5.3.1 Example 1
         5.3.2 Example 2
         5.3.3 Example 3
         5.3.4 Example 4
6 Manufacturing process
   6.1 Steelmaking process
   6.2 Product making process for fittings
         and heat treatment
         6.2.1 Product making process
         6.2.2 Welding
         6.2.3 Heat treatment
7 Technical requirements
   7.1 General
   7.2 Chemical composition - Cast analysis
   7.3 Weldability
   7.4 Mechanical properties at room
         temperature
   7.5 Corrosion resistance
   7.6 Appearance and internal soundness
         7.6.1 Appearance
         7.6.2 Internal soundness
   7.7 Dimensions and tolerances
         7.7.1 General
         7.7.2 Dimensions
         7.7.3 Dimensional tolerances
         7.7.4 Performance of the end bevelling
   7.8 Leak tightness
8 Inspection
   8.1 Inspection documents
         8.1.1 Types of inspection documents
         8.1.2 Content of inspection documents
   8.2 Summary of inspection and testing
9 Sampling
   9.1 Frequency of tests
         9.1.1 Test unit
   9.2 Preparation of samples and test pieces
         9.2.1 Samples and test pieces for mechanical tests
         9.2.2 Test piece for the tensile
                test on the base material
         9.2.3 Test piece for the tensile
                test on the weld
         9.2.4 Test piece for the weld bend test
         9.2.5 Test piece for the intergranular
                corrosion test
10 Test methods
   10.1 Chemical analysis
   10.2 Tensile test on the base material
         10.2.1 At room temperature
         10.2.2 At elevated temperature
   10.3 Transverse tensile test on the weld
   10.4 Weld bend test
   10.5 Intergranular corrosion test
   10.6 Dimensional testing
   10.7 Visual inspection
   10.8 Non destructive testing
         10.8.1 Personnel
         10.8.2 NDT of the weld
   10.9 Material identification
   10.10 Leak tightness test
   10.11 Optional tests
11 Marking
   11.1 Marking to be applied
12 Handling and packaging
Annex A (normative) - Structural dimensions of fittings
Annex B (informative) - Commonly used inside diameters
                        and wall thicknesses, metric sizes
Bibliography

Describes the technical delivery requirements for seamless and welded buttwelding fittings (elbows, concentric and eccentric reducers, equal and reducing tees, caps) made of austenitic and austenitic-ferritic (duplex) stainless steel without specific inspection requirements.

1.1 This part of EN 10253 specifies the technical delivery requirements for seamless and welded buttwelding fittings (elbows, concentric and eccentric reducers, equal and reducing tees, caps) made of austenitic and austenitic–ferritic (duplex) stainless steel without specific inspection requirements.

It specifies:

  • steel grades;

  • mechanical properties;

  • dimensions and tolerances;

  • requirements for inspection and testing;

  • inspection documents;

  • marking;

  • handling and packaging.

1.2 Limitation of use

The allowed pressures and temperatures are the responsibility of the customer according to the state of the art and in application of the safety coefficients in the application regulations, codes and standards.

In common, joint coefficient is used in the calculation of the thicknesses of components which include one or several butt welds, other than circumferential:

  • for equipment subject to random non-destructive testing: 0,85;

  • for equipment not subject to non-destructive testing other than visual inspection: 0,7.

1.3 Unless otherwise specified in this part of EN 10253 the general technical delivery requirements in EN 100021 apply.

Committee
ISE/110
DevelopmentNote
Supersedes BS 1640-2(1962), BS 1640-4(1968) & 04/30100065 DC. (12/2008)
DocumentType
Standard
Pages
50
PublisherName
British Standards Institution
Status
Current
Supersedes

Standards Relationship
EN 10253-3:2008 Identical

EN ISO 14284:2002 Steel and iron - Sampling and preparation of samples for the determination of chemical composition (ISO 14284:1996)
EN 10002-1 : 2001 METALLIC MATERIALS - TENSILE TESTING - PART 1: METHOD OF TEST AT AMBIENT TEMPERATURE
EN 10052:1993 Vocabulary of heat treatment terms for ferrous products
EN ISO 8493 : 2004 Metallic materials - Tube - Drift-expanding test (ISO 8493:1998)
EN 10079:2007 Definition of steel products
EN 10027-2:2015 DESIGNATION SYSTEMS FOR STEELS - PART 2: NUMERICAL SYSTEM
EN 10216-5:2013 Seamless steel tubes for pressure purposes - Technical delivery conditions - Part 5: Stainless steel tubes
EN 10002-5:1991 Metallic materials - Tensile testing - Part 5: Method of testing at elevated temperature
EN ISO 8495:2013 Metallic materials - Tube - Ring-expanding test (ISO 8495:2013)
EN ISO 377:2017 Steel and steel products - Location and preparation of samples and test pieces for mechanical testing (ISO 377:2017)
EN 10088-3:2014 Stainless steels - Part 3: Technical delivery conditions for semi-finished products, bars, rods, wire, sections and bright products of corrosion resisting steels for general purposes
ISO 2566-2:1984 Steel Conversion of elongation values Part 2: Austenitic steels
EN 10168:2004 Steel products - Inspection documents - List of information and description
EN 13480-1:2017 Metallic industrial piping - Part 1: General
ISO 8493:1998 Metallic materials Tube Drift-expanding test
EN ISO 3166-1:2014 Codes for the representation of names of countries and their subdivisions - Part 1: Country codes (ISO 3166-1:2013)
ISO 6708:1995 Pipework components Definition and selection of DN (nominal size)
EN 10088-2:2014 STAINLESS STEELS - PART 2: TECHNICAL DELIVERY CONDITIONS FOR SHEET/PLATE AND STRIP OF CORROSION RESISTING STEELS FOR GENERAL PURPOSES
EN 910 : 1996 DESTRUCTIVE TESTS ON WELDS IN METALLIC MATERIALS - BEND TESTS
EN 10028-7:2016 Flat products made of steels for pressure purposes - Part 7: Stainless steels
EN ISO 1127:1996 Stainless steel tubes - Dimensions, tolerances and conventional masses per unit length (ISO 1127:1992)
EN ISO 6708:1995 Pipework components - Definition and selection of DN (nominal size) (ISO 6708:1995)
EN 10217-7:2014 Welded steel tubes for pressure purposes - Technical delivery conditions - Part 7: Stainless steel tubes
EN 10272:2016 Stainless steel bars for pressure purposes
ISO 15609-1:2004 Specification and qualification of welding procedures for metallic materials Welding procedure specification Part 1: Arc welding
EN ISO 9001:2015 Quality management systems - Requirements (ISO 9001:2015)
EN 10021:2006 General technical delivery conditions for steel products
EN 10296-2:2005/AC:2007 WELDED CIRCULAR STEEL TUBES FOR MECHANICAL AND GENERAL ENGINEERING PURPOSES - TECHNICAL DELIVERY CONDITIONS - PART 2: STAINLESS STEEL
ISO 5251:1981 Stainless steel butt-welding fittings
EN 10297-2:2005/AC:2007 SEAMLESS CIRCULAR STEEL TUBES FOR MECHANICAL AND GENERAL ENGINEERING PURPOSES - TECHNICAL DELIVERY CONDITIONS - PART 2: STAINLESS STEEL
ISO 3651-2:1998 Determination of resistance to intergranular corrosion of stainless steels — Part 2: Ferritic,austenitic and ferritic-austenitic (duplex) stainless steels — Corrosion test in media containing sulfuric acid
EN ISO 2566-2:1999 Steel - Conversion of elongation values - Part 2: Austenitic steels (ISO 2566-2:1984)
ISO 8495:2013 Metallic materials Tube Ring-expanding test
EN 10204:2004 Metallic products - Types of inspection documents
EN ISO 3651-2 : 1998 DETERMINATION OF RESISTANCE TO INTERGRANULAR CORROSION OF STAINLESS STEELS - FERRITIC, AUSTENITIC AND FERRITIC-AUSTENITIC (DUPLEX) STAINLESS STEELS - CORROSION TEST IN MEDIA CONTAINING SULFURIC ACID
ISO 9001:2015 Quality management systems — Requirements
EN ISO 15609-1:2004 Specification and qualification of welding procedures for metallic materials - Welding procedure specification - Part 1: Arc welding (ISO 15609-1:2004)
EN 10027-1:2016 Designation systems for steels - Part 1: Steel names
ISO 3419:1981 Non-alloy and alloy steel butt-welding fittings
ISO 3166-1:2013 Codes for the representation of names of countries and their subdivisions Part 1: Country codes
EN 10020:2000 Definition and classification of grades of steel
EN 10266:2003 Steel tubes, fittings and structural hollow sections - Symbols and definitions of terms for use in product standards
EN 1418:1997 Welding personnel - Approval testing of welding operators for fusion welding and resistance weld setters for fully mechanized and automatic welding of metallic materials
ISO 377:2017 Steel and steel products — Location and preparation of samples and test pieces for mechanical testing
ISO 14284:1996 Steel and iron — Sampling and preparation of samples for the determination of chemical composition
EN 10088-1:2014 Stainless steels - Part 1: List of stainless steels
ISO 1127:1992 Stainless steel tubes Dimensions, tolerances and conventional masses per unit length
EN 287-1:2011 Qualification test of welders - Fusion welding - Part 1: Steels

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