BS 7993-2011 Twin ferrule connectors and associated tubing for 316 stainless steel systems Specification and test methods《316不锈钢系统用双套管连接器和组合管道 规范和试验方法》.pdf
《BS 7993-2011 Twin ferrule connectors and associated tubing for 316 stainless steel systems Specification and test methods《316不锈钢系统用双套管连接器和组合管道 规范和试验方法》.pdf》由会员分享,可在线阅读,更多相关《BS 7993-2011 Twin ferrule connectors and associated tubing for 316 stainless steel systems Specification and test methods《316不锈钢系统用双套管连接器和组合管道 规范和试验方法》.pdf(62页珍藏版)》请在麦多课文档分享上搜索。
1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS 7993:2011Twin ferrule connectors andassociated tubing for 316stainless steel systems Specification and testmethodsPublishing and copyright informationThe BSI copyright notice
2、displayed in this document indicates when the documentwas last issued. BSI 2011ISBN 978 0 580 54781 2ICS 23.100.40The following BSI references relate to the work on this standard:Committee reference MCE/18/-/4Draft for comment 11/30124825 DCPublication historyFirst published July 2011Amendments issu
3、ed since publicationDate Text affectedBS 7993:2011 BRITISH STANDARDContentsForeword iiiIntroduction 11 Scope 12 Normative references 23 Terms and definitions 34 Design 55 Requirements for construction and materials 316 Pressure/temperature requirements 327 Requirements for tubes 338 Requirements for
4、 screw threads 389 Performance requirements 3810 Marking 4011 Documentation 42AnnexesAnnex A (normative) Test procedures 43Bibliography 54List of figuresFigure 1 Cross-section of a typical twin ferrule connector 5Figure 2 Cross-section of a metric tube end 7Figure 3 Cross-section of a fractional tub
5、e end 9Figure 4 Compression end nut 11Figure 5 Union connector 13Figure 6 Male bulkhead connector 15Figure 7 Equal elbow 16Figure 8 Equal tee 18Figure 9 Equal cross 20Figure 10 Male stud connector (NPT) 21Figure 11 Male stud connector (BSPT) 24Figure 12 Male stud connector (BSPP) 27Figure 13 Bulkhea
6、d connector 28Figure 14 Assembly instructions regarding intermixing and interchanging 42Figure A.1 Test assembly for pressure tests 45Figure A.2 Test assembly for dismantling and reassembly test 45Figure A.3 Salt spray test 46Figure A.4 Hydraulic impulse and vibration rig Plan view 49Figure A.5 Hydr
7、aulic impulse test cycle 49Figure A.6 Geometry of hydraulic impulse and vibration test Side elevationshowing simple cantilever 50Figure A.7 Thermal cycle test assembly 51List of tablesTable 1 Requirements for tube ends for tubes with metric outside diametersizes 8Table 2 Requirements for tube ends f
8、or tubes with imperial outside diametersizes 10Table 3 Requirements for compression end nuts for tubes with metric outsidediameter sizes 12Table 4 Requirements for compression end nuts for tubes with imperial outsidediameter sizes 13Table 5 Requirements for union connectors for tubes with metric out
9、sidediameter sizes 14BRITISH STANDARD BS 7993:2011 BSI 2011 iTable 6 Requirements for union connectors for tubes with imperial outsidediameter sizes 14Table 7 Requirements for male bulkhead connectors for tubes with metricoutside diameter sizes 15Table 8 Requirements for male bulkhead connectors for
10、 tubes with imperialoutside diameter sizes 16Table 9 Requirements for equal elbows for tubes with metric outside diametersizes 17Table 10 Requirements for equal elbows for tubes with imperial outsidediameter sizes 17Table 11 Requirements for equal tees for tubes with metric outside diametersizes 19T
11、able 12 Requirements for equal tees for tubes with imperial outside diametersizes 19Table 13 Requirements for equal crosses for tubes with metric outsidediameter sizes 20Table 14 Requirements for equal crosses for tubes with imperial outsidediameter sizes 21Table 15 Requirements for male stud connec
12、tors (NPT) for tubes with metricoutside diameter sizes 22Table 16 Requirements for male stud connectors (NPT) for tubes with imperialoutside diameter sizes 23Table 17 Requirements for male stud connectors (BSPT) for tubes with metricoutside diameter sizes 25Table 18 Requirements for male stud connec
13、tors (BSPT) for tubes with imperialoutside diameter sizes 26Table 19 Requirements for male stud connectors (BSPP) for tubes with metricoutside diameter sizes 27Table 20 Requirements for male stud connectors (BSPP) for tubes with imperialoutside diameter sizes 28Table 21 Requirements for bulkhead con
14、nectors for tubes with metric outsidediameter sizes 29Table 22 Requirements for bulkhead connectors for tubes with imperialoutside diameter sizes 30Table 23 Working pressure rating for metric size stainless steel tube (bar) 34Table 24 Working pressure rating for metric size stainless steel tube (psi
15、) 35Table 25 Working pressure rating for imperial size stainless steel tube (bar) 36Table 26 Working pressure rating for imperial size stainless steel tube (psi) 37Table 27 Factors used to determine tube pressure ratings at elevatedtemperatures 38Table 29 Letter symbols for connectors 41Table A.1 Te
16、st fluid properties 45Table A.2 Range of tube diameters deemed to passed the fire test 52Table A.3 Results of corrosion resistance test 52Summary of pagesThis document comprises a front cover, an inside front cover, pages i to iv,pages 1 to 54, an inside back cover and a back cover.BRITISH STANDARDB
17、S 7993:2011ii BSI 2011ForewordPublishing informationThis British Standard is published by BSI and came into effect on 31 July 2011. Itwas prepared by Panel MCE/18/-/4, Connectors and associated components,under the authority of Technical Committee MCE/18, Fluid power systems andcomponents. A list of
18、 organizations represented on these committees can beobtained on request to their secretary.Information about this documentProduct certification/inspection/testing. Users of this British Standard are advisedto consider the desirability of third-party certification/inspection/witness oftesting of pro
19、duct conformity with this British Standard. Users seeking assistancein identifying appropriate conformity assessment bodies or schemes may ask BSIto forward their enquiries to the relevant association.Users of this standard are also advised to consider the desirability of requestingconformity to BS
20、EN ISO/IEC 17025 and BS EN 45011.Assessed capability. Users of this British Standard are advised to consider thedesirability of quality system assessment and registration against the appropriatestandard in the BS EN ISO 9000 series by an accredited third-party certificationbody.Hazard warningsWARNIN
21、G. This British Standard calls for the use of substances and/orprocedures that can be injurious to health if adequate precautions are nottaken. It refers only to technical suitability and does not absolve the userfrom legal obligations relating to health and safety at any stage. Attention isparticul
22、arly drawn to the danger of bursts, fine jets (which can penetrate theskin), energy release of expanding gases and the use of accumulators.WARNING. Where tests are performed, the maximum working pressureconnector (MWPC) or maximum working pressure tube (MWPT) should notexceed the manufacturers maxim
23、um pressure rating.WARNING. Do not bleed off air under pressure by undoing connector nuts, asthey might separate and cause injury.The practice(s) of intermixing and/or interchanging are not condoned orrecommended within the remit of this British Standard. However, it isrecognized that, in practice,
24、system interfaces, modification requirements etc.,can make these practices necessary, and for this purpose, this British Standardrequires suitable instructions to be made available to the user (see Clause 11).Use of this documentThis British Standard is intended for use by manufacturers of connector
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