NEN EN 10217-7 : 2014

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols
5 Classification and designation
   5.1 Classification
   5.2 Designation
6 Information to be supplied by the purchaser
   6.1 Mandatory information
   6.2 Options
   6.3 Examples of an order
         6.3.1 Example 1
         6.3.2 Example 2
7 Manufacturing process
   7.1 Steelmaking process
   7.2 Tube manufacture and delivery conditions
8 Requirements
   8.1 General
   8.2 Chemical composition
         8.2.1 Cast analysis
         8.2.2 Product analysis
   8.3 Mechanical properties
         8.3.1 At room temperature
         8.3.2 At elevated temperature
         8.3.3 At low temperature
   8.4 Corrosion resistance
   8.5 Appearance and internal soundness
         8.5.1 Appearance
         8.5.2 Internal soundness
   8.6 Straightness
   8.7 Preparation of ends
   8.8 Dimensions, masses and tolerances
         8.8.1 Outside diameter and wall thickness
         8.8.2 Mass
         8.8.3 Lengths
         8.8.4 Tolerances
9 Inspection
   9.1 Type of inspection
   9.2 Inspection documents
         9.2.1 Types of inspection documents
         9.2.2 Content of inspection documents
   9.3 Summary of inspection and testing
10 Sampling
   10.1 Test unit
   10.2 Preparation of samples and test pieces
         10.2.1 Selection and preparation of samples for
                product analysis
         10.2.2 Location, orientation and preparation of
                samples and test pieces for mechanical tests
11 Test methods
   11.1 Chemical analysis
   11.2 Tensile test on the base material
         11.2.1 At room temperature
         11.2.2 At elevated temperature
   11.3 Transverse tensile test on the weld
   11.4 Technological tests
         11.4.1 General
         11.4.2 Flattening test
         11.4.3 Ring tensile test
         11.4.4 Drift expanding test
         11.4.5 Ring expanding test
   11.5 Weld bend test
   11.6 Impact test
   11.7 Intergranular corrosion test
   11.8 Leak tightness test
         11.8.1 Hydrostatic test
         11.8.2 Eddy current test
   11.9 Dimensional inspection
   11.10 Visual examination
   11.11 Non-destructive testing
   11.12 Material identification
   11.13 Retests, sorting and reprocessing
12 Marking
   12.1 Marking to be applied
   12.2 Additional marking
13 Handling and packaging
Annex ZA (informative) Relationship between this European
                       Standard and the Essential
                       Requirements of EU Directive 97/23/EC

Defines the technical delivery conditions in two test categories for welded tubes of circular cross-section made of austenitic and austenitic-ferritic stainless steel which are intended for pressure and corrosion resisting purposes at room temperature, at low temperatures or at elevated temperatures.