AS 1528.2-2001

Table of Contents

<toc>
<bookmarktable>
<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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<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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<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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<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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<pageno>6</pageno>
<text>1.5.2 Pressure and temperature specification</text>
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<pageno>7</pageno>
<text>1.5.3 Joint rings</text>
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<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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<pageno>7</pageno>
<text>1.6.2 Joint rings</text>
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<pageno>7</pageno>
<text>1.7 SCREW THREADS</text>
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<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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<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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<pageno>19</pageno>
<text>2.12 IDF GASKET</text>
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<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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<pageno>20</pageno>
<text>2.13.2 Expanding</text>
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<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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<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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<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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<pageno>22</pageno>
<text>B2 TOOLS</text>
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<pageno>22</pageno>
<text>B3 PROCEDURE</text>
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<pageno>22</pageno>
<text>B3.1 Preparation</text>
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<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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<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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<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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<pageno>25</pageno>
<text>C3 PROCEDURE</text>
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<pageno>26</pageno>
<text>APPENDIX D - CROSS-SECTIONS OF SCREWED COUPLING ASSEMBLIES</text>
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<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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<pageno>30</pageno>
<text>E3 WELDED-TYPE MALE PART LIP REMOVED, SUITABLE FOR FLAT FACED COUPLING</text>
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<pageno>31</pageno>
<text>E4 WELDED-TYPE MALE PART</text>
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<pageno>32</pageno>
<text>E5 WELDED-TYPE FACE LINER</text>
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<pageno>33</pageno>
<text>E6 WELDED-TYPE LINER</text>
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<pageno>34</pageno>
<text>E7 SLOTTED ROUND NUT</text>
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<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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<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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<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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<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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<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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<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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<pageno>40</pageno>
<text>H2.2 Root width of threads (w, W) on GO side profile</text>
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<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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<pageno>42</pageno>
<text>H3.2 Nut</text>
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<pageno>43</pageno>
<text>APPENDIX I - GASKET FOR TRAPEZOIDAL THREADS TYPE COUPLING</text>
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<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>
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<pageno>44</pageno>
<text>J3.1 Preparation (see Figure J1)</text>
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<pageno>44</pageno>
<text>J3.2 Cutting the tube (see Figure J1)</text>
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<pageno>45</pageno>
<text>J3.3 Expansion (see Figure J1 and J2)</text>
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<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