NEN EN 12451 : 2012

Foreword
1 Scope
2 Normative references
3 Definitions
4 Designations
      4.1 Material
      4.2 Material condition
      4.3 Product
5 Ordering information
6 Requirements
      6.1 Composition
      6.2 Mechanical properties
      6.3 Dimensions and tolerances
      6.4 Surface quality
      6.6 Technological requirements
7 Sampling
      7.1 General
      7.2 Analysis
      7.3 Mechanical tests and stress corrosion
8 Test methods
      8.1 Analysis
      8.2 Tensile test
      8.3 Hardness test
      8.4 Technological tests
      8.5 Freedom from defects tests
      8.6 Retests
      8.7 Rounding of results
9 Declaration of conformity and inspection
      documentation
      9.1 Declaration of conformity
      9.2 Inspection documentation
10 Marking, packaging, labelling
Table 1 - Composition of copper and copper alloys
Table 2 - Mechanical properties of copper and copper alloy
Table 3 - Tolerances on diameter
Table 4 - Tolerances on length
Table 5 - Tolerances on squareness of cut
Table 6 - Sampling rate
Table 7 - Drill sizes for production of reference standard
          tubes
Annex A (informative) Bibliography
Annex B (normative) U-bend seamless copper and copper alloy
                    heat exchanger tubes
Annex ZA (informative) Clauses of this European Standard
                       addressing essential requirements or
                       other provisions of EU Directives

Defines the composition, tolerances and property requirements on dimensions and form for seamless round drawn copper and copper alloy tubes for heat exchangers, evaporators, condensers and desalination equipment, supplied in size range from 6 mm up to and including 76 mm outside diameter and from 0,5 mm up to and including 3 mm wall thickness.