03/108196 DC : 0

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols
5 Classification of grades and designation
   5.1 Classification of grades
   5.2 Designation
6 Information to be supplied by the purchaser
   6.1 Mandatory information
   6.2 Options
   6.3 Examples of an order
7 Resistance to internal pressure
   7.1 General
   7.2 Fittings of type A
   7.3 Fittings of type B
8 Manufacturing process
   8.1 Steelmaking process
   8.2 Product making process for fittings and heat treatment
9 Technical requirements
   9.1 General
   9.2 Chemical composition
   9.3 Mechanical properties
10 Appearance and internal soundness
   10.1 Appearance
   10.2 Internal soundness
11 Dimensions and tolerances
   11.1 Dimensions
   11.2 Dimensional tolerances
   11.3 Performance of the end bevelling
12 Inspection
   12.1 Inspection documents
   12.2 Summary of inspection and testing
13 Sampling
   13.1 Frequency of tests
   13.2 Preparation of samples and test pieces
14 Test methods
   14.1 Chemical analysis
   14.2 Tensile test on the base material
   14.3 Transverse tensile test on the weld
   14.4 Weld bend test
   14.5 Impact testing
   14.6 Intergranular corrosion test
   14.7 Dimensional testing
   14.8 Visual inspection
   14.9 Non destructive testing
   14.10 Material identification
   14.11 Optional tests
15 Marking
   15.1 Marking to be applied
16 Handling and packaging
Annex A (informative) Specific dimensions of fittings
Annex B (informative) Determination of wall thickness
Annex C (informative) Wall thickness tables
Annex D (informative) Commonly used inside diameters and
        wall thicknesses
Annex ZA (informative) Clauses of this European Standard
         addressing essential requirements or other
         provisions of EU Directives

EN 10253-4