1、STD-AECMA PREN Li555-ENGL 2000 1OL23LL 0038705 30T D Edition approved for publication 2000-09-29 AECMA STANDARD NORME AECMA AECMA NORM Comments should be sent within six months after the date of publication to AECMA Gulledelle 94 B-1200 BRUXELLES prEN 4555 Edition P I September 2000 PUBLISHED BY THE
2、 EUROPEAN ASSOCIATION OF AEROSPACE INDUSTRIES (AECMA) Gulledelle 94 - 8-1200 BRUXELLES - Tel. (+32) 2 775 Bi 10 - Fax. (+32) 2 775 81 I1 ICs: 49.080 Descriptors: aircraft industry, hydraulic system, fluid circuit, pipe fitting, heat resistant steel, characteristic, dimension, dimensional tolerance,
3、designation ENGLISH VERSION Aerospace series Pipe coupling, 37*, in heat resisting steel Ferrules, welded Inch series Srie arospatiale Systme de raccordement 37“, en acier rsistant chaud Ajutages souder Srie inch Luft- und Raumfahrt Rohrverschraubung 37“, aus hochwarmfestem Stahl Anschweistutzen zum
4、 anschweien Inch-Reihe This “Aerospace 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 Technica
5、l Committee following comment by 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. After examination and signatur
6、e of the AECMA Standard Checking Centre (NPS) and formal agreement of fhe Official Services of the Member countries it will be submitted as a draft European Standard to CEN (European Committee for Standardization) for formai vote. Nota - Edra copies can be supplied by B.N.A.E. - Technopolis 54 - 199
7、, rue Jean-Jacques Rousseau - 92138 ISSY-LES-MOULINEAUX CEDEX I I C4 Chairman Mr Staib aecma 201 STD-AECMA PREN 4555-ENGL 2000 D LOL2311 00187Cib 24b = Page 3 prEN 4555: 2000 I Scope This standard specifies the characteristics of welded ferrules for inch series pipe couplings, 37“, in heat resisting
8、 steel, for aerospace applications. Nominal pressure: Class D in accordance with IS0 6771 2 Normative references IS0 6771 Aerospace - Fluid systems and components - Pressure and temperature classifications EN 2424 Aerospace series - Marking of aerospace products EN 3487 Aerospace series - Steel FE-P
9、A13 - Softened - 5005Rm1700MPa - Bars for machining - De I 100 mm 1) EN 4549 Aerospace series - Pipe couplings, in heat resisting steel or in heat resisting nickel alloy - Coupling end, weld - Design configuration - Inch series 1) EN 4550-4 Aerospace series - Pipe couplings, 37“ - Design configurati
10、on - Inch series - Part 1: Female sealing ends 1) EN 4560 Aerospace series - Pipe couplings, 37“, spherical, up to 21 O00 kPa - Inch series - Technical specification 1) 3 Required characteristics 3.1 See figure 1 and table 1. Dimensions and tolerances are in millimetres. Configuration - Dimensions -
11、 Tolerances - Masses 3.2 Material EN 3487 with minimum hardness HB 140 1) Published as AECMA Prestandard at the date of publication of this standard Previous page is blank - STD=AECMA PREN q555-ENGL 2000 1012311 0018707 182 H f 0,25 10,oo 10,30 11,20 12,70 13,75 Page 4 prEN 4555: 2000 Mass 2,72 . 4,
12、08 4,99 10,89 14,06 -0.3 Weld end per C 10 I o, 1 izk I A l v m M 1 I Sealing end CL? perG - (0 A per EN4550-4) I ( E per EN4550-4) Figure 1 Table 1 U 3 D VIEW EN4550405 EN4550-4-06 This code corresponds to: - tube wall thickness (A: 0,711 mm; B: 0,889 mm); - nominal diameter given in iBth of inches
13、 within two digits. Mass = quoted in kg/l O00 parts 13,70 I 20.41 14,70 I 28,58 STD.AECMA PREN 4555-ENGL 2000 1012311 0018708 019 9 Page 5 prEN 4555: 2000 4 Designation EXAMPLE: Identity block I EN4555A10 Description block FERRULE Dimensional code (see table 1) 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
