Table of Contents

<toc>
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<bookmark index='0'>
<pageno>1</pageno>
<text>AS 1528.2-2001 TUBES (STAINLESS STEEL) AND TUBE FITTINGS FOR THE FOOD INDUSTRY - SCREWED COUPLINGS</text>
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<pageno>4</pageno>
<text>PREFACE</text>
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<bookmark index='2'>
<pageno>5</pageno>
<text>CONTENTS</text>
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<pageno>6</pageno>
<text>SECTION 1 RECESSED RING JOINT TYPE</text>
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<pageno>6</pageno>
<text>1.1 SCOPE OF SECTION</text>
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<bookmark index='5'>
<pageno>6</pageno>
<text>1.2 APPLICATION</text>
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<pageno>6</pageno>
<text>1.3 REFERENCED DOCUMENTS</text>
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<bookmark index='7'>
<pageno>6</pageno>
<text>1.4 TYPES AND ASSEMBLIES</text>
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<pageno>6</pageno>
<text>1.5 MATERIALS</text>
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<pageno>6</pageno>
<text>1.5.1 Male parts, liners, nuts and blank caps</text>
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<bookmark index='10'>
<pageno>6</pageno>
<text>1.5.2 Pressure and temperature specification</text>
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<bookmark index='11'>
<pageno>7</pageno>
<text>1.5.3 Joint rings</text>
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<bookmark index='12'>
<pageno>7</pageno>
<text>1.6 DIMENSIONS AND TOLERANCES</text>
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<pageno>7</pageno>
<text>1.6.1 Male parts, liners, nuts and blank caps</text>
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<bookmark index='14'>
<pageno>7</pageno>
<text>1.6.2 Joint rings</text>
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<bookmark index='15'>
<pageno>7</pageno>
<text>1.7 SCREW THREADS</text>
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<bookmark index='16'>
<pageno>10</pageno>
<text>1.8 SURFACE FINISH</text>
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<pageno>10</pageno>
<text>1.8.1 External surfaces</text>
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<bookmark index='18'>
<pageno>10</pageno>
<text>1.8.2 Internal surfaces</text>
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<pageno>10</pageno>
<text>1.9 PACKAGING</text>
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<pageno>10</pageno>
<text>1.10 MARKING</text>
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<pageno>10</pageno>
<text>1.10.1 On the container</text>
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<pageno>10</pageno>
<text>1.10.2 On parts</text>
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<pageno>11</pageno>
<text>SECTION 2 TRAPEZOIDAL THREAD TYPE SCREWED COUPLINGS (IDF TYPE)</text>
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<pageno>11</pageno>
<text>2.1 SCOPE OF SECTION</text>
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<bookmark index='25'>
<pageno>11</pageno>
<text>2.2 APPLICATION</text>
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<bookmark index='26'>
<pageno>11</pageno>
<text>2.3 REFERENCED DOCUMENTS</text>
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<bookmark index='27'>
<pageno>11</pageno>
<text>2.4 MATERIALS</text>
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<pageno>11</pageno>
<text>2.4.1 Male parts, liners, nuts and support rings</text>
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<pageno>11</pageno>
<text>2.4.2 Filler rods for welding</text>
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<pageno>12</pageno>
<text>2.5 SYMBOLS</text>
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<pageno>13</pageno>
<text>2.6 EXPANDED-TYPE MALE PART</text>
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<pageno>14</pageno>
<text>2.7 EXPANDED-TYPE LINER</text>
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<pageno>15</pageno>
<text>2.8 WELDED-TYPE MALE PART</text>
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<pageno>16</pageno>
<text>2.9 WELDED-TYPE LINER</text>
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<pageno>17</pageno>
<text>2.10 HEXAGON NUT</text>
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<pageno>18</pageno>
<text>2.11 ROUND NUT</text>
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<bookmark index='37'>
<pageno>19</pageno>
<text>2.12 IDF GASKET</text>
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<bookmark index='38'>
<pageno>20</pageno>
<text>2.13 ASSEMBLING</text>
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<pageno>20</pageno>
<text>2.13.1 Welding</text>
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<bookmark index='40'>
<pageno>20</pageno>
<text>2.13.2 Expanding</text>
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<bookmark index='41'>
<pageno>20</pageno>
<text>2.14 HYGIENIC REQUIREMENTS</text>
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<pageno>20</pageno>
<text>2.14.1 Accessibility of surface of coupling</text>
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<pageno>20</pageno>
<text>2.14.2 Welded male parts and liners</text>
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<pageno>20</pageno>
<text>2.14.3 Gasket</text>
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<bookmark index='45'>
<pageno>20</pageno>
<text>2.15 SURFACE FINISH</text>
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<pageno>20</pageno>
<text>2.15.1 External surfaces</text>
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<pageno>20</pageno>
<text>2.15.2 Internal surfaces</text>
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<pageno>21</pageno>
<text>APPENDIX A - INFORMATION TO BE SUPPLIED BY THE PURCHASER</text>
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<bookmark index='49'>
<pageno>22</pageno>
<text>APPENDIX B - GUIDE FOR EXPANDING WITH STRAIGHT TUBE- RECESSED RING JOINT SCREWED COUPLINGS</text>
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<pageno>22</pageno>
<text>B1 INTRODUCTION</text>
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<bookmark index='51'>
<pageno>22</pageno>
<text>B2 TOOLS</text>
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<bookmark index='52'>
<pageno>22</pageno>
<text>B3 PROCEDURE</text>
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<pageno>22</pageno>
<text>B3.1 Preparation</text>
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<bookmark index='54'>
<pageno>23</pageno>
<text>B3.2 Cutting the tube</text>
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<pageno>23</pageno>
<text>B3.3 Expansion</text>
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<pageno>25</pageno>
<text>APPENDIX C - GUIDE FOR WELDING</text>
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<pageno>25</pageno>
<text>C1 INTRODUCTION</text>
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<bookmark index='58'>
<pageno>25</pageno>
<text>C2 METHODS</text>
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<pageno>25</pageno>
<text>C2.1 Method 1-Arc with filler rod</text>
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<bookmark index='60'>
<pageno>25</pageno>
<text>C2.2 Method 2-Gas Tungsten Arc Welding (GTAW) without filler rod but with inert gas protection on both sides of the weld</text>
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<bookmark index='61'>
<pageno>25</pageno>
<text>C3 PROCEDURE</text>
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<bookmark index='62'>
<pageno>26</pageno>
<text>APPENDIX D - CROSS-SECTIONS OF SCREWED COUPLING ASSEMBLIES</text>
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<bookmark index='63'>
<pageno>28</pageno>
<text>APPENDIX E - DIMENSIONS OF RECESSED RING JOINT SCREWED COUPLINGS AND COMPONENTS</text>
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<pageno>28</pageno>
<text>E1 EXPANDED-TYPE MALE PART</text>
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<bookmark index='65'>
<pageno>29</pageno>
<text>E2 EXPANDED-TYPE LINER</text>
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<bookmark index='66'>
<pageno>30</pageno>
<text>E3 WELDED-TYPE MALE PART LIP REMOVED, SUITABLE FOR FLAT FACED COUPLING</text>
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<bookmark index='67'>
<pageno>31</pageno>
<text>E4 WELDED-TYPE MALE PART</text>
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<bookmark index='68'>
<pageno>32</pageno>
<text>E5 WELDED-TYPE FACE LINER</text>
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<bookmark index='69'>
<pageno>33</pageno>
<text>E6 WELDED-TYPE LINER</text>
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<bookmark index='70'>
<pageno>34</pageno>
<text>E7 SLOTTED ROUND NUT</text>
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<bookmark index='71'>
<pageno>35</pageno>
<text>E8 HEX NUT</text>
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<bookmark index='72'>
<pageno>36</pageno>
<text>E9 BLANK CAP</text>
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</bookmark>
<bookmark index='73'>
<pageno>37</pageno>
<text>APPENDIX F - GROOVES FOR EXPANDED- TYPE MALE PARTS AND LINERS</text>
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<bookmark index='74'>
<pageno>38</pageno>
<text>APPENDIX G - DIMENSIONS OF JOINT RINGS FOR RECESSED RING JOINTS</text>
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<pageno>38</pageno>
<text>G1 FLAT FACED MODIFIED SEAL, STANDARD O&#146;RING, AUSTRALIAN CREVICE FREE SEAL</text>
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<bookmark index='76'>
<pageno>39</pageno>
<text>APPENDIX H - TRAPEZOIDAL THREAD INTENDED FOR SCREWED COUPLINGS</text>
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<pageno>39</pageno>
<text>H1 EXPLANATION OF TERMS</text>
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<pageno>39</pageno>
<text>H1.1 Basic profile</text>
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<bookmark index='79'>
<pageno>39</pageno>
<text>H1.2 Pitch (P)</text>
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<pageno>39</pageno>
<text>H1.3 Major diameter</text>
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<bookmark index='81'>
<pageno>39</pageno>
<text>H1.4 Pitch diameter</text>
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<pageno>39</pageno>
<text>H1.5 Minor diameter</text>
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<pageno>39</pageno>
<text>H1.6 GO side profile</text>
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</bookmark>
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<pageno>40</pageno>
<text>H2 DETERMINATION OF THREAD LIMITING DIMENSIONS</text>
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<pageno>40</pageno>
<text>H2.1 Thread diameters</text>
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<bookmark index='86'>
<pageno>40</pageno>
<text>H2.2 Root width of threads (w, W) on GO side profile</text>
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<bookmark index='87'>
<pageno>41</pageno>
<text>H3 THREAD DIMENSIONS</text>
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<pageno>41</pageno>
<text>H3.1 Male Part</text>
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<bookmark index='89'>
<pageno>42</pageno>
<text>H3.2 Nut</text>
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</bookmark>
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<bookmark index='90'>
<pageno>43</pageno>
<text>APPENDIX I - GASKET FOR TRAPEZOIDAL THREADS TYPE COUPLING</text>
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<bookmark index='91'>
<pageno>44</pageno>
<text>APPENDIX J - GUIDE FOR EXPANDING WITH STRAIGHT TUBE- TRAPEZOIDAL THREADS SCREWED COUPLINGS</text>
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<pageno>44</pageno>
<text>J1 INTRODUCTION</text>
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<bookmark index='93'>
<pageno>44</pageno>
<text>J2 TOOLS</text>
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<bookmark index='94'>
<pageno>44</pageno>
<text>J3 PROCEDURE</text>
<bookmark index='95'>
<pageno>44</pageno>
<text>J3.1 Preparation (see Figure J1)</text>
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<bookmark index='96'>
<pageno>44</pageno>
<text>J3.2 Cutting the tube (see Figure J1)</text>
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<bookmark index='97'>
<pageno>45</pageno>
<text>J3.3 Expansion (see Figure J1 and J2)</text>
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<bookmark index='98'>
<pageno>46</pageno>
<text>J3.4 Facing off (see Figure J3)</text>
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</toc>

Abstract

Specifies the requirements for screwed couplings. Section 1 applies to recessed ring joint type. Section 2 applies to trapezoidal threads type. These couplings are used for effecting joins in pipelines in food processing plants. Both sections propose dimensions, tolerances, surface roughness materials, assembling and hygienic requirements for both welded-type and expanded-type male parts and liners and for nuts, ring joints or gaskets. In this revision new dimensions have been included. Appendices irrelevant for the industry with changing technologies have been deleted.

Scope

This Section applies to screwed couplings of the compressible ring joint type (RJT) for effecting joins in pipelines in food processing plants. It specifies dimensional, material and surface finish requirements for the individual components of the couplings.
NOTE: Information to be supplied by the purchaser is given in Appendix A.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	Standards Australia
Pages
ISBN
Committee	FT-027
Under Revision	DR AS 1528.2:2018
Supersedes	AS 1528.2-1976 DR 99456 DR 99455