1、ASD STANDARD NORME ASD ASD NORM prEN 3274 Edition P 2 February 2010 PUBLISHED BY THE AEROSPACE AND DEFENCE INDUSTRIES ASSOCIATION OF EUROPE - STANDARDIZATIONAvenue de Tervuren, 270 - B-1150 Brussels - Tel. 32 2 775 8126 - Fax. 32 2 775 8131 - www.asd-stan.orgICS: Supersedes edition P 1 of December 1
2、989 and will supersede EN 3274:2001Descriptors: ENGLISH VERSION Aerospace series Pipe coupling 830 Thread end Geometric configuration Srie arospatiale Systme de raccordement 830 Extrmit de filetage Configuration gomtrique Luft- und Raumfahrt Rohrverschraubung 830 Gewindeende Konstruktionsblatt This
3、“Aerospace Series“ Prestandard has been drawn up under the responsibility of ASD-STAN (The AeroSpace and Defence Industries Association of Europe - Standardization). It is published for the needs of the European Aerospace Industry. It has been technically approved by the experts of the concerned Dom
4、ain following member comments. Subsequent to the publication of this Prestandard, the technical content shall not be changed to an extent that interchangeability is affected, physically or functionally, without re-identification of the standard. After examination and review by users and formal agree
5、ment of ASD-STAN, it will be submitted as a draft European Standard (prEN) to CEN (European Committee for Standardization) for formal vote and transformation to full European Standard (EN). The CEN national members have then to implement the EN at national level by giving the EN the status of a nati
6、onal standard and by withdrawing any national standards conflicting with the EN. Edition approved for publication 28 February 2010 Comments should be sent within six months after the date of publication to ASD-STAN Mechanical Domain Copyright 2010 by ASD-STAN prEN 3274:2010 (E) 2 Contents Page Forew
7、ord2 1 Scope 3 2 Normative references 3 3 Required characteristics.3 4 Designation . 10 Foreword This standard was reviewed by the Domain Technical Coordinator of ASD-STANs Mechanical Domain. After inquiries and votes carried out in accordance with the rules of ASD-STAN defined in ASD-STANs General
8、Process Manual, this standard has received approval for Publication. prEN 3274:2010 (E) 3 1 Scope This standard specifies the characteristics of the thread end for 830 pipe couplings, nominal pressure up to 28 000 kPa, for aerospace applications. 2 Normative references The following referenced docum
9、ents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 2491, Aerospace series Molybdenum disulphide dry lubricants Coating methods
10、ISO 5855-3, Aerospace MJ threads Part 3: Limit dimensions for fittings for fluid systems ISO 8788, Aerospace Nuts, metric Tolerances of form and position 3 Required characteristics 3.1 Configuration Dimensions Dimensions are in millimetres. Dimensions and tolerances apply before lubrication. Threads
11、 and sealing face shall be lubricated according to EN 2491. 3.1.1 Form B According to Figure 1 and Table 1. 3.1.2 Forms C to L According to Figures 2 to 10 and Tables 1 and 2. 3.2 Surface roughness According to Figures 1 to 10. The O-ring sealing groove shall not contain any radial tool marks. prEN
12、3274:2010 (E) 4 aThread Figure 1 Form B prEN 3274:2010 (E) 5 Table 1 Thread b d1d2d3e1g1l1r1s1T c Code a 4g6g H11 0 0,2 nom. tol. min. 0 0,2 0,2 0 0,2 h13 04 MJ81 3,2 6,5 6,6 11,05 10 05 MJ101 4,2 8,5 8,6 0 0,2 12,12 2 7,3 0,5 11 0,36 06 MJ121,25 5 10,2 10,3 14,38 2,5 9 0,6 13 08 MJ141,5 6,7 12 12 1
13、7,77 16 10 MJ161,5 8,7 14 14 18,90 17 12 MJ181,5 10,6 16 16 21,10 19 0,43 14 MJ201,5 11,4 18 18 24,49 22 16 MJ221,5 13,3 20 20 26,75 24 18 MJ241,5 15,3 22 22 30,14 27 20 MJ271,5 18 25 25 33,53 30 22 MJ301,5 20,8 28 28 35,72 32 0,52 25 MJ331,5 22,4 31 31 37,72 34 28 MJ361,5 25,6 34 34 45,63 41 32 MJ3
14、91,5 28,3 37 37 0 0,3 45,63 3 10,8 0,8 41 0,62 aCorresponds to the pipe nominal outside diameter. bAccording to ISO 5855-3. cAccording to ISO 8788. X as form BaThread Figure 2 Form C prEN 3274:2010 (E) 6 X as form BaThread Figure 3 Form D X as form BY as form DaThread Figure 4 Form E prEN 3274:2010
15、(E) 7 X as form BY as form DaThread Figure 5 Form F X as form BY as form DZ as form FaThread bOn both faces Figure 6 Form G prEN 3274:2010 (E) 8 X as form BY as form DaThread Figure 7 Form H X as form BY as form DaThread Figure 8 Form J prEN 3274:2010 (E) 9 X as form BY as form DZ as form FaThread F
16、igure 9 Form K X as form BY as form DZ as form FaThread bOn both faces Figure 10 Form L prEN 3274:2010 (E) 10 Table 2 b1b2b3c1c2d4d5d6d7d8e2e3g2l2l3r2s2s3Code a 0,3 0 0 0,1 0,25 0,2 0,2 nom. tol. 0 0,3 0 0,2 0 0,2 0,1 min. min. 0,30 0,2 0,2 0,2 0 h13 h13 04 4 5,5 12 21 8 19 13,2 24,5 14,5 18,5 12 22
17、 05 6 6,5 14 23 10 21 15,5 26,7 2 15,5 19,5 0,5 14 24 06 7 5 7,5 17 27 12 24 18,9 30,1 2,5 18 22 0,6 17 27 08 9,5 + 0,8 0 19 30 14 26 21,1 33,5 22 25 19 30 10 11,5 22 32 16 28 24,5 35,7 26 22 32 12 13,5 24 34 18 30 26,7 37,7 24 34 14 5 14,5 27 36 20 32 30,1 39,9 27 36 16 16,5 30 38 22 34 33,5 30 18
18、18,5 32 40 24 36 35,7 45,6 32 41 20 22 34 43 27 39 37,7 34 22 6 25 36 46 30 42 39,9 51,2 36 46 25 27 41 50 33 45 45,6 55,8 23 27 41 50 28 6 30,5 46 52 36 48 51,2 3 46 32 8 2,9 4,2 7 7 33,5 + 0,2 0 50 55 39 51 55,8 61,3 4 24,5 28,5 0,8 50 55 aCorresponds to the pipe nominal outside diameter. 4 Designation EXAMPLE EN3274C05 Number of this standard Form (see Figures 1 to 10) Code (see Table 1)
