NEN EN 12451 : 2012
Current
The latest, up-to-date edition.
COPPER AND COPPER ALLOYS - SEAMLESS, ROUND TUBES FOR HEAT EXCHANGERS
01-12-2013
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
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