1、May 2003 English price group 5No part of this standard may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 21.040.30!$VcW“1516452www.din.deDThis su
2、pplement provides information relating to DIN EN ISO 228-1, but does not contain any additional specifications.DIN EN ISO 228-1 Supplement 1Pipe threads where pressure-tight joints are not made on the threads Part 1: Dimensions, tolerances and designation Limits of sizeRohrgewinde fr nicht im Gewind
3、e dichtende Verbindungen Teil 1: Mae, Toleranzen und Bezeichnung; GrenzmaeEnglische Fassung DIN EN ISO 228-1 Beiblatt 1:2003-05SupersedesDIN ISO 228-1 Supplement1:1994-12www.beuth.deEnglish version of DIN EN ISO 228-1 Supplement 1:2003-05Document comprises 4 pagesDIN EN ISO 228-1 Suppl. 1:2003-05 2
4、National foreword This supplement has been prepared by Section B Gewinde, Technical Committee NATG-B.4 Rohrgewinde of the Normenausschuss Technische Grundlagen (Fundamental Technical Standards Committee). International Standard ISO 228-1:2000 has been adopted by CEN as European Standard EN ISO 228-1
5、:2003 without any modifications. With the publication of that standard at German national level as DIN EN ISO 228-1, DIN ISO 228-1:2001-04 has been withdrawn. As a consequence and in order to avoid confusion, Supplement 1 to DIN ISO 228-1:1994-12 has also been withdrawn and superseded by Supplement
6、1 to DIN EN ISO 228-1. Amendments This supplement differs from Supplement 1 to DIN ISO 228-1:1994-12 in that it has been editorially revised. The substance and technical content have not been changed. Previous editions Supplement 1 to DIN ISO 228-1: 1994-12 DIN EN ISO 228-1 Suppl. 1:2003-05 3 1 Scop
7、e This supplement specifies limits of size for external and internal threads. 2 Limits of size The values given in Tables 1 and 2 are calculated from the tolerances specified in DIN EN ISO 228-1. 2.1 Limits of size for external threads Table 1 External threads Dimensions in millimetres Major diamete
8、r d Pitch diameter d2minimum Thread size maximum minimum maximum tolerance class A tolerance class B 1/16 7,723 7,509 7,142 7,035 6,928 1/8 9,728 9,514 9,147 9,040 8,933 1/4 13,157 12,907 12,301 12,176 12,051 3/8 16,662 16,412 15,806 15,681 15,556 1/2 20,955 20,671 19,793 19,651 19,509 5/8 22,911 22
9、,627 21,749 21,607 21,465 3/4 26,441 26,157 25,279 25,137 24,995 7/8 30,201 29,917 29,039 28,897 28,755 1 33,249 32,889 31,770 31,590 31,410 1 1/8 37,897 37,537 36,418 36,238 36,058 1 1/4 41,910 41,550 40,431 40,251 40,071 1 1/2 47,803 47,443 46,324 46,144 45,964 1 3/4 53,746 53,386 52,267 52,087 51
10、,907 2 59,614 59,254 58,135 57,955 57,775 2 1/4 65,710 65,276 64,231 64,014 63,797 2 1/2 75,184 74,750 73,705 73,488 73,271 2 3/4 81,534 81,100 80,055 79,838 79,621 3 87,884 87,450 86,405 86,188 85,971 3 1/2 100,330 99,896 98,851 98,634 98,417 4 113,030 112,596 111,551 111,334 111,117 4 1/2 125,730
11、125,296 124,251 124,034 123,817 5 138,430 137,996 136,951 136,734 136,517 5 1/2 151,130 150,696 149,651 149,434 149,217 6 163,830 163,396 162,351 162,134 161,917 DIN EN ISO 228-1 Suppl. 1:2003-05 4 2.2 Limits of size for internal threads Table 2 Internal threads Dimensions in millimetres Pitch diame
12、ter D2Minor diameter D1Thread size minimum maximum minimum maximum 1/16 7,142 7,249 6,561 6,843 1/8 9,147 9,254 8,566 8,848 1/4 12,301 12,426 11,445 11,890 3/8 15,806 15,931 14,950 15,395 1/2 19,793 19,935 18,631 19,172 5/8 21,749 21,891 20,587 21,128 3/4 25,279 25,421 24,117 24,658 7/8 29,039 29,18
13、1 27,877 28,418 1 31,770 31,950 30,291 30,931 1 1/8 36,418 36,598 34,939 35,579 1 1/4 40,431 40,611 38,952 39,592 1 1/2 46,324 46,504 44,845 45,485 1 3/4 52,267 52,447 50,788 51,428 2 58,135 58,315 56,656 57,296 2 1/4 64,231 64,448 62,752 63,392 2 1/2 73,705 73,922 72,226 72,866 2 3/4 80,055 80,272 78,576 79,216 3 86,405 86,622 84,926 85,566 3 1/2 98,851 99,068 97,372 98,012 4 111,551 111,768 110,072 110,712 4 1/2 124,251 124,468 122,772 123,412 5 136,951 137,168 135,472 136,112 5 1/2 149,651 149,868 148,172 148,812 6 162,351 162,568 160,872 161,512
