BS 3127:1979
Current
The latest, up-to-date edition.
Specification for ferrous and non-ferrous Bourdon tubing
Hardcopy , PDF
English
29-12-1978
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Foreword
Cooperating organizations
Specification
Section one. General
1 Scope
2 References
3 Designations
4 Manufacture
5 Sampling for tests
6 Hardness test
7 Certificate of conformity
8 Packaging
9 Marking
Section two. Beryllium copper tubing
10 Chemical composition
11 Condition
12 Hardness
Section three. Brass tubing
13 Chemical composition
14 Condition
15 Mercurous nitrate test
16 Hardness
Section four. Phosphor bronze tubing
17 Chemical composition
18 Condition
19 Hardness
Section five. Chromium-molybdenum alloy steel tubing
20 Chemical composition
21 Condition
22 Hardness
Section six. Stainless steel tubing
23 Chemical composition
24 Condition
25 Hardness
Section seven. Iron-nickel-chromium-titanium
(precipitation hardening) alloy tubing
26 Chemical composition
27 Condition
28 Hardness
Section eight. Dimensions and tolerances
29 Dimensions
30 Wall thickness
31 Tolerances
Appendix
A Mechanical properties of the materials specified in
this standard
Tables
1 Tube size
2 Wall thickness
3 Tolerance on wall thickness
4 Mechanical properties
Figure
1 Dimensions
Chemical compositions of beryllium copper, brass, phosphor bronze (non-ferrous) and chromium-molybdenum alloy steel, stainless steel, iron-nickel-chromium-titanium (precipitation hardening) alloy (ferrous) tubing materials. Dimensions and tolerances of sections of oval tubing.
| Committee |
GEL/65/2
|
| DevelopmentNote |
Supersedes 76/20856 DC and BS 3127(1959) (07/2005) Reviewed and confirmed by BSI, October 2012. (09/2012)
|
| DocumentType |
Standard
|
| Pages |
14
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
This British Standard applies to ferrous and non-ferrous tubing supplied in straight lengths in a suitable condition for the fabrication of the pressure-responsive components of gauges and instruments operating on the Bourdon principle.
Detailed chemical compositions are specified and a series of sections, with appropriate tolerances, is specified for “oval” tubing.
The types of tubing specified are as follows:
| Non-ferrous | Section |
| Beryllium copper | 2 |
| Brass | 3 |
| Phosphor bronze | 4 |
| Ferrous | |
| Chromium-molybdenum alloy steel | 5 |
| Stainless steel | 6 |
| Iron-nickel-chromium-titanium (precipitation hardening) alloy | 7 |
| DEFSTAN 22-65/4(2021):2021 | Specification for Gauges, Submarine Depth, Dial Indicating |
| BS 2871-2:1972 | Specification for copper and copper alloys. Tubes Tubes for general purposes |
| BS 427:1990 | Method for Vickers hardness test and for verification of Vickers hardness testing machines |
| BS 2870:1968 | Rolled copper and copper alloys sheet. Strip and foil |
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