1、 AEROSPACE STANDARD CROSS, BULKHEAD, FLARELESS TUBE MA2157Copyright 2015 SAE International All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, with
2、out the prior written permission of SAE. TO PLACE A DOCUMENT ORDER: Tel: 877-606-7323 (inside USA and Canada) Tel: +1 724-776-4970 (outside USA) Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.org ISSUED 1988-04REAFFIRMED2015-04THIRD ANGLE PROJECTION CUSTODIAN: G-3/G-3
3、B FEDERAL SUPPLY CLASS 4730MA2157 SHEET 1 OF 2 PROCUREMENT SPECIFICATION: MA2005 (ISO 7169)SAE Technical Standards Board Rules provide that: “This report ispublished by SAE toadvance thestate of technicalandengineering sciences. Theuse ofthisreport is entirelyvoluntary, andits applicability and suit
4、ability forany particularuse,including any patent infringement arising therefrom, isthe soleresponsibilityofthe user.”SAE reviews eachtechnicalreport at least every five years at which time itmay berevised,reaffirmed, stabilized, orcancelled. SAE invites yourwrittencomments andsuggestions. SAE value
5、s your input. To provide feedbackon this Technical Report, please visit http:/www.sae.org/technical/standards/MA2157 RATIONALE MA2157 HAS BEEN REAFFIRMED TO COMPLY WITH THE SAE FIVE-YEAR REVIEW POLICY. AEROSPACE STANDARD MA2157 SHEET 2 OF 2 CROSS, BULKHEAD, FLARELESS TUBE NOTES:/1/ DN = NOMINAL TUBE
6、 OUTSIDE DIAMETER2. DIMENSIONS IN MILLIMETERS./3/ TOLERANCES: DECIMALS 0.3. TOLERANCE ON 90 ANGLE, 2-1/2 FOR SIZES DN05 THRU DN10, 1-1/2 FOR SIZE DN12 AND LARGER.4. ALL MACHINED SURFACES SHALL BE SMOOTH TO 3.2 MICROMETERS Ra PER ANSI B46.1.5. REMOVE ALL BURRS AND BREAK ALL SHARP EDGES.6. MATERIAL, F
7、INISH, MANUFACTURE, IDENTIFICATION, CLEANING, AND PACKAGING PER PROCUREMENT SPECIFICATION./7/ CODE LETTER FOR MATERIAL, IN PLACE OF DASH IN PART NUMBER:LETTER J, 304 CORROSION RESISTANT STEELLETTER T, 6AL4V TITANIUM ALLOY.8. THIS PART SHALL BE QUALIFIED IN A COMPLETE COUPLING ASSEMBLY IN ACCORDANCE WITH PROCUREMENT SPECIFICATION MA2005 (ISO 7169). USERS OF THIS STANDARD ARE ADVISED TO CONTROL SOURCE APPROVAL(S) BY STANDARD PAGE SUPPLEMENT OR SIMILAR MEANS.9. EXAMPLE OF PART NUMBER: MA2157J08, DN08 TUBE SIZE, 304 CORROSION RESISTANT STEEL.
