1、AECMA STANDARD NORME AECMA AECMA NORM Comments should be sent within six months after the date of publication to Edition approved for publication prEN 4552 Edition P I September 2000 C4 Chairman PUBLISHED BY THE EUROPEAN ASSOCIATION OF AEROSPACE INDUSTRIES (AECMA) Gulledelle 94 - B-1200 BRUXELLES -
2、Tel. (+32) 2 775 8110 - Fax. (+32) 2 775 8111 ICs: 49.080 Descriptors: aircraft industry, hydraulic system, fluid circuit, pipe fitting, heat resistant steel, characteristic, dimension, dimensional tolerance, designation ENGLISH VERSION Aerospace series Pipe coupling, 37“, spherical, in heat resisti
3、ng steel Straight nipples, welded Inch series Srie arospatiale Luft- und Raumfahrt Systme de raccordement sphrique 37“, en acier rsistant chaud Mamelons droits a souder Rohnrerschraubung mit Kugelbuchsen 37“, aus hochwarmfestem Stahl Gerade Verschraubungen zum Anschweien Srie inch Inch-Reihe This “A
4、erospace Series Prestandard has been drawn up under the responsibility of AECMA (The European Association of Aerospace Industries). It is published on green paper for the needs of AECMA- Members. It has been technically approved by the experts of the concerned Technical Committee following comment b
5、y the Member countries. 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. Aner examination and signature of the AECMA Standard Checking
6、 Centre (NPS) and formal agreement of the Oficial Services of the Member countries it will be submitted as a draft European Standard to CEN (European Committee for Standardization) for formal vote. 2000-09-29 AECMA Gulledelle 94 8-1200 BRUXELLES Mr Staib I I I 0 aecrna 2000 Copyright Association Eur
7、opeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-STD.AECMA PREN 4552-ENGL 2000 = 101231L 00LBb1 T75 = Page 3 prEN 4552: 2000 I Scope This standard specifies the characteristics
8、of welded straight nipples for inch series pipe couplings, 37, spherical, in heat resisting steel, for aerospace applications. Nominal pressure: Class D in accordance with IS0 6771 2 Normative references IS0 3161 IS0 6771 EN 2424 EN 3468 EN 3487 EN 4549 EN 4550-1 EN 4560 Aerospace - UNJ threads - Ge
9、neral requirements and limit dimensions Aerospace - Fluid systems and components - Pressure and temperature classifications Aerospace series - Marking of aerospace products Aerospace series - Steel FE-PA13 - Softened - 500 I R, I 700 MPa - Forgings - De I 100 mm 1) Aerospace series - Steel FE-PA13 -
10、 Softened - 500 S R, 5 700 MPa - Bars for machining - De S 1 O0 mm 1) Aerospace series - Pipe couplings, in heat resisting steel or in heat resisting nickel alloy - Coupling end, weld - Design configuration - Inch series 1) Aerospace series - Pipe couplings, 37“, spherical - Design configuration - I
11、nch series - Part 1: Male sealing ends 1) Aerospace series - Pipe couplings, 37“, spherical, up to 21 O00 kPa - Inch series - Technical specification 1) 3 Required characteristics 3.1 Configuration - Dimensions - Tolerances - Masses See figures 1 and 2 and tables 1 to 4. Dimensions and tolerances ar
12、e in millimetres. I N I without lockina wire hole I 3.2 Materials EN 3468 with minimum hardness HB 140 or EN 3487 with minimum hardness HB 140 Previous page is blank 1) Published as AECMA Prestandard at the date of publication of this standard Copyright Association Europeene des Constructeurs de Mat
13、eriel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,- STD-AECMA PREN 4552-ENGL 2000 W 1OL23LL 00LBb92 921 D Page 4 prEN 4552: 2000 4.3 Ra 7 (dSee EN4550-I STYLE SECT I ON A-A Threads surface will be achieved by n
14、ormal methods of manufacture. A A D except dlmensim I Figure I - Hexagonal larger than thread STYLE B OTHERW I SE SAME AS STYLE A SECT I ON B-B 3 D ViEW 3 0 VIEW Figure 2 - Hexagonal smaller than thread Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under l
15、icense with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-STDnAECMA PREN 4552-ENGL 2000 LOL23LL 0ULBb93 8b8 limansional code A03 BO3 BO4 A05 BO5 A06 BO6 A08 BO8 Al O Bi O Al 2 812 Al 6 Bi6 - Page 5 prEN 4552: 2000 Nominal Wall Thread AB C D E J Style diamete
16、r thickness + 0,25 of tube fO,25 f0,25 -0,25 min. 0,711 EN4549AO03 0,889 EN4549B003 0,711 EN4549A004 0,889 EN4549B004 0,711 EN4549A005 0,889 EN45496005 0,711 EN4549A006 0,889 EN45496006 0,711 EN4549A008 0,889 EN 4 54 9 BO O 8 0,711 EN4549A010 0,889 EN4549B010 0,711 EN4549A012 0,889 EN45498012 0,711
17、EN4549A016 0.889 EN4549BOl6 4,763 .375 0-24UNJF-3A 22,35 12,20 . EN4550-1-03 8,70 9,50 .437 5-20UNJF-3A 23,62 13,50 . EN4550-1-04 11,lO 12,24 6,350 A 7,924 .500 0-20UNJF-3A 24,13 . EN4550-1-05 12,70 14,02 14,OO 9,525 .562 5-18UNJF-3A 26,67 EN4550-1-06 l4,30 15,80 12,700 ,750 0-16UNJF-3A 28,19 15,50
18、EN4550-1-06 15,SO 17,63 15,875 .875 0-14UNJF-3A 30,48 17,80 . EN4550-1-10 19,05 21,23 B 19,050 1.062 5-12UNJ-3A 32,51 19,80 EN4550-1-12 20,65 23,06 25,400 2 I .312 5-12UNJ-3A 34,04 21,30 EN4550-1-16 27,OO 30,25 Table 2 Al O B1 O - 15,875 3,05 18,SO 19,65 - Mass - 6,80 935 11,80 16,35 2430 34,50 42,7
19、0 59,50 - Table 3 (For style B only) Dimensional Nominal L F T I I diameter I f0,25 I f0,10 I I 19,050 25,400 BI6 a This code corresponds to: - lube wall thickness (A: 0.71 1 mm; 8 0,889 mm); - nominal diameter given in 16th of inches within two digits, Copyright Association Europeene des Constructe
20、urs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Page 6 prEN 4552: 2000 Al O Bi0 Al 2 812 Al 6 Bi6 Table 4 8,65 1,65 8,90 1,90 10,05 1,65 1,90 10,30 12,90 1,65 13,40 I ,90 15,875 2.55 19,050 25,400
21、4 Designation EXAMPLE: Description block I Identity block NIPPLE, STRAIGHT EN4552AlON Number of this standard Dimensional code (see tables 2 to 4) Locking wire hole option code (see table 1) NOTE If necessary, the code 19005 shall be placed between the description block and the identity block. 5 Marking EN 2424, style A, as indicated on figure 1. 6 Technical specification According to EN 4560 Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
