1、STD-AECMA PREN 4557-ENGL 2000 = 2OL23LL OOLA7L4 312 I I 0 aecma 200 AECMA STANDARD NORME AECMA AECMA NORM Edition approved for publication prEN 4557 Edition P 1 September 2000 Comments should be sent within six months C4 Chairman after the date of Dublication to PUBLISHED BY THE EUROPEAN ASSOCIATION
2、 OF AEROSPACE INDUSTRIES (AECMA) Gulledelle 94 - 8-1200 BRUXELLES - Tel. (+32) 2 775 81 10 - Fax. (+32) 2 775 81 11 ICs: 49.080 Descriptors: aircraft industry, hydraulic system, fluid circuit, pipe fitting, heat resistant steel, characteristic, dimension, dimensional tolerance, designation ENGLISH V
3、ERSION Aerospace series Pipe coupling, 37“, spherical, in heat resisting steel Tees nipples, welded Inch series Srie arospatiale Luft- und Raumfahrt Systme de raccordement sphrique 37“, en acier rsistant chaud Mamelons en T souder Rohrverschraubung mit Kugelbuchsen 37“, aus hochwarmfestem Stahl T Ve
4、rschraubungen zum Anschweien Srie inch 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
5、 of the concerned Technical 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. Afte
6、r examination and signature of the AECMA Standard Checking Centre (NPS) and formal agreement of the Oftcial 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 BRUXEL
7、LES Mr Staib I Scope 1 2 This standard specifies the characteristics of welded tees with nipple for inch series pipe couplings, 37“, spherical, in heat resisting steel, for aerospace applications. Nominal pressure: Class D per IS0 6771 weld end on one side weld end on both sides 2 IS0 3161 IS0 6771
8、EN 2424 EN 3363 EN 3468 EN 3487 EN 4549 Normative references Aerospace - UNJ threads - General requirements and limit dimensions Aerospace - Fluid systems and components - Pressure and temperature classifications Aerospace series - Marking of aerospace products Aerospace series - Steel FE-CM38 - Sol
9、ution treated - Rm2 485 MPa - Sands or investment casting 1) Aerospace series - Steel FE-PA13 - Softened - 500 I Rm I 700 MPa - Forgings - De S i00 mm 1) Aerospace series - Steel FE-PA13 - Softened - 500 s R, I700 MPa - Bars for machining - Da 5 100 mm 1) Aerospace series - Pipe couplings, in heat r
10、esisting steel or in heat resisting nickel alloy - Coupling end, weld - Design configuration - Inch series 1) EN 4550-1 EN 4560 Aerospace series - Pipe couplings, 37“, spherical - Design configuration - Inch series - Part I: Male sealing ends 1) Aerospace series - Pipe couplings, 37“, spherical, up
11、to 21 O00 kPa - Inch series - Technical specification 1) 3 Required characteristics 3.2 Materials EN 3363 with minimum hardness HB 140 or 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 o
12、f this standard Page 4 prEN 4557: 2000 -0.3 Threads surface will be achieved by normal methods of manufacture. Ra 7 (/%e EN4550-I Welding end option code 2 (0 E per EN4550-1) I I 1- - Welding end option code 1 3 m1n.J -, L 4-J Figure 1 - Shape for molding or forging parts 3D VIEW 30 VIEW N th0 = G/2
13、 NOTE 1 Dimensions and tolerances given in figure 1 are applicable to whole machining parts. NOTE 2 Weld end option code 1 couplings may be whole machining with the dimensions and tolerances given in figures 1 and 2. Figure 2 - Shape for whole machining parts (alternate method of manufacture) Styie
14、1 Style 2 Styie 3 Figure 3 - Configurations of diameter B STD-AECMA PREN 4557-ENGL 2000 3OL2311 0038737 O21 Page 5 prEN 4557: 2000 Table 2 Al 003 81004 t 15,875 (continued) Xmensional Nominal Wall Cb code diameter thickness Weld I fittiitti of tube sides 0,711 EN4549A010 1 A2012 0,711 EN4549A020 0,8
15、89 EN4549B010 0,889 EN45498020 0,711 EN4549A010 A2403 0,711 EN4549A024 I I 0,889 EN45496010 82403 0,889 EN4549B024 4,763 31,750 19,050 38,100 4,763 6,350 a This code corresponds to: - tube wail thickness (A: 0.71 1 mm: 8: 0,889 mm): - nominal diameter of the run sides given in 16th of inches within
16、two digits; - nominal diameter of the leg side given in 16th of inches within two digits. When weld end option code is 1, the other side is as shown on lhe bottom of figure i. . Page6 prEN 4557: 2000 Table 3 Dimensional Nomlnal Thread A codea diameter sides wed I side f 0,25 t 0,05 - 0,l EN4550-1-03
17、 7,90 EN4550-1-04 11,lO EN4550-1-06 9,25 EN4550-1-04 9,50 EN4550-1-05 11,lO EN4550-1-06 $ 11,10 11,10 7,90 EN4550-1-03 9,25 EN4550-1-04 11,10 11,10 - 14,30 17,50 - 7,90 I EN4550-1-03 I 14,30 i7,5a 7.90 - - 9,25 - 12.20 - 16,75 9,25 12,20 - 16,75 19,75 20.65 - : EN4550-1-10 I EN4550-1-03 I EN4550-1-0
18、4 EN4550-1-06 EN4550-1-08 EN4550-1-10 EN4550-1-03 I EN4550-1-04 EN4550-1-06 20 EN4550-1-08 EN455C-1-1 0 EN4550-1-12 17,50 - 17,50 - 20,65 - 20.65 STD.AECMA PREN 4557-ENGL 2000 M LOL23LL OOL87L 7T4 OH .0.05 -0,25 27,OO 33,40 41,40 Page 7 prEN 4557: 2000 fO,25 30,OO 26,OO 12,OO Table 3 (concluded) ilm
19、ensional codes Nominal Thread AB D E diameter weid I fittiitti: O sides f0,25 - 0,l f 0,25 4.763 Al 603 81603 - . I 4 I I .375 0-24UNJF-3A 7,90 EN4550-1-03 -1 25,400 112,700 I .750 0-16UNJF9A 141,30 I16,X I EN4550-1-0827,OO 15,875 .875 0-14UNJF-3A 19,75 EN4550-1-10 A1610 A1612 81612 19,050 1.062 5-1
20、2UNJ-3A 24,OO EN4550-1-12 14,7 - I I I I 24 41,45 3 109,80 This code corresponds to: - tube wall thickness (A: 0,711 mm; 8: 0,889 mm); - nominal diameter of the run sides given in 16th OF inches within two digits; - nominal diameter of the leg side given in 16h of inches within two digits. Quoted in
21、 inches in accordance with IS0 3161 Seefigure 3. Mass =quoted in kgil OW parts 14,7 I 10 136,551 3 I 80,60 4 Designation EXAMPLE: Description block TEE WITH FITTING Identity block EN4557AlOO8- TI ! Number of this standard Dimensional code (see tables 2 and 3) Weld end code (see table 1) NOTE If necessary, the code i9005 shall be placed between the description block and the identity block. 5 Marking EN 2424, style A, as indicated on figures 1 and 2. 6 According to EN 4560 Tech n cal spec i fi cat ion
