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BS EN 12735-2:2016 – TC:2020 Edition

BS EN 12735-2:2016 – TC:2020 Edition

$186.33

Tracked Changes. Copper and copper alloys. Seamless, round tubes for air conditioning and refrigeration – Tubes for equipment

Published By Publication Date Number of Pages
BSI 2020 64
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This European Standard specifies the requirements, sampling, test methods and conditions of delivery for seamless round copper tubes, smooth or inner finned, used for heat exchangers and their internal connecting pipes in the manufacturing of refrigeration and air conditioning equipment. It is applicable to tubes with an outside diameter from 3,97 mm up to and including 219 mm. NOTE The tubes are supplied in straight length in the material conditions hard, half-hard or skin hard or as coils in the material conditions light annealed or soft annealed.

PDF Catalog

PDF Pages PDF Title
38 Contents Page
40 European foreword
42 Introduction
43 1 Scope
2 Normative references
44 3 Terms and definitions
4 Designations
4.1 Material
4.1.1 General
45 4.1.2 Symbol
4.1.3 Number
4.2 Material condition
4.3 Product
46 5 Ordering information
47 6 Requirements
6.1 Composition
6.2 Mechanical properties and grain size
Table 1 — Mechanical properties and grain size
6.3 Dimensions and tolerances for smooth tubes
6.3.1 General
48 6.3.2 Nominal dimensions
49 Table 2 — Nominal outside diameters and wall thicknesses for smooth tubes
50 6.3.3 Tolerances on mean outside diameter
Table 3 — Tolerances on outside diameter for smooth tubes in straight length
Table 4 — Tolerances on mean outside diameter for smooth tubes in coils
6.3.4 Tolerances on wall thickness
51 Table 5 — Tolerances on wall thickness for smooth tubes
Table 6 — Tolerances on wall thickness
6.3.5 Tolerances on the mass for tubes supplied in coils
52 6.3.6 Tolerances on length for tubes supplied in straight lengths
Table 7 — Tolerances on length for tubes supplied in straight lengths
6.3.7 Tolerances of form
6.3.7.1 Deviation from circular form
Table 8 — Maximum deviation from circular form expressed as percentage of the nominal outside diameter
53 6.3.7.2 Deviation from concentricity
6.4 Dimensions and tolerances for inner finned tubes
6.4.1 General
6.4.2 Dimensions for inner finned tubes
Table 9 — Recommended nominal outside diameters for inner finned tubes
54 6.4.3 Tolerances on mean outside diameter
6.4.4 Tolerances on mass for tubes supplied in coils
6.4.5 Tolerances of form
6.5 Drift expanding (for smooth tubes)
Table 10 — Testing of drift expanding
6.6 Freedom from defects
6.6.1 General
55 6.6.2 Straight tubes
6.6.3 Coiled tubes
Table 11 — Permissible number of defects for coils
6.7 Surface quality
7 Sampling
56 8 Test methods
8.1 Analysis
8.2 Tensile test
8.3 Hardness test
8.4 Estimation of average grain size
8.5 Drift expanding test
8.6 Carbon content test
8.7 Freedom from defects test
57 8.8 Retests
9 Declaration of conformity and inspection documentation
9.1 Declaration of conformity
9.2 Inspection documentation
10 Packaging, marking and form of delivery
10.1 Packaging and marking
58 10.2 Form of delivery
10.2.1 Coils
Table 12 — Coil and reel dimensions
10.2.2 Straight lengths
59 Annex A (normative) Freedom from defects test
A.1 Eddy current test
A.1.1 General
Table A.1 — Maximum drill diameters for reference standard tube
A.1.2 Detection for non-local defects on coiled tubes
60 A.2 Hydrostatic test
Table A.2 — Hydrostatic pressure test
A.3 Pneumatic test
61 Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of Directive 2014/68/EU aimed to be covered
Table ZA.1 — Correspondence between this European Standard and Annex I of Directive 2014/68/EU
62 Bibliography

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BS EN 12735-2:2016 - TC
$186.33