ISO-4039-2-1998.pdf
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1、A Reference number ISO 4039-2:1998(E) INTERNATIONAL STANDARD ISO 4039-2 First edition 1998-08-15 Road vehicles Pneumatic braking systems Part 2: Pipes, male fittings and tapped holes with conical sealing surface Vhicules routiers Dispositifs de freinage pneumatique Partie 2: Tuyauteries, raccords ml
2、es et logements surface dtanchit conique ISO 4039-2:1998(E) ISO 1998 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing f
3、rom the publisher. International Organization for Standardization Case postale 56 CH-1211 Genve 20 Switzerland Internetisoiso.ch Printed in Switzerland ii Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The
4、 work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-gove
5、rnmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for v
6、oting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. International Standard ISO 4039-2 was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 2, Braking systems and equipment. ISO 4039 consists of the following
7、 parts, under the general title Road vehicles Pneumatic braking systems: Part 1: Pipes, male fittings and tapped holes with facial sealing surface Part 2: Pipes, male fittings and tapped holes with conical sealing surface Annexes A and B of this part of ISO 4039 are for information only. INTERNATION
8、AL STANDARD ISOISO 4039-2:1998(E) 1 Road vehicles Pneumatic braking systems Part 2: Pipes, male fittings and tapped holes with conical sealing surface 1 Scope This part of ISO 4039 specifies the essential dimensions and material requirements for metallic and thermoplastic pipes, male fittings and ta
9、pped holes with a conical sealing surface, of the metric series, used in pneumatic braking systems on road vehicles using compressed air at a pressure below 2 MPa (20 bar). Annex A gives, for information, an indication as to the relationship between this part of ISO 4039 and ISO 6149, and a recommen
10、dation on how to indicate conformity with this part of ISO 4039. 2 Normative reference The following standard contains provisions which, through reference in this text, constitute provisions of this part of ISO 4039. At the time of publication, the edition indicated was valid. All standards are subj
11、ect to revision, and parties to agreements based on this part of ISO 4039 are encouraged to investigate the possibility of applying the most recent edition of the standard indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. ISO 9227:1990, Corrosion
12、tests in artificial atmospheres - Salt spray tests. 3 Pipes 3.1 Dimensions The external diameter, D1, shall be as specified in table 1. It may be used in any combination with the threads specified in table 2. Table 1 - Dimensions of pipes Dimensions in millimetres External diameter, D168101214151618
13、20 3.2 Materials Pipes may be made of metal (examples: steel, copper, copper alloys, etc.) or thermoplastics (example: polyamide, etc.). 3.3 Surface condition The inner and outer surfaces of the pipes shall be free from oxidation, and shall be smooth and clean. The outer surface shall be protected a
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