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PolyPipe®

R E C O M M E N D E D

Heat Fusion

Joining Procedures

TABLE OF CONTENTS

INTRODUCTION
1
FEDERAL REGULATIONS
1
QUALIFICATION PROCEDURE2
HEAT FUSION2
INCLEMENT WEATHER3
NOTES ON FUSION CONFIDENCE4
FUSION CHECKLIST5
BUTT FUSION6
PROCEDURE6
QUALIFICATION10
SADDLE FUSION14
DEFINITIONS14
PROCEDURE15
QUALIFICATION17
SOCKET FUSION21
EQUIPMENT REQUIREMENTS21
HEATER TEMPERATURE21
PROCEDURE21
QUALIFICATION23
APPENDIX A27
HYDRAULIC FUSION MACHINE GAUGE PRESSURE27
REFERENCES28
FIGURES
FIGURE I – BUTT FUSION BENT STRAP TEST SPECIMEN10
FIGURE II – SADDLE FUSION BENT STRAP TEST SPECIMEN17
FIGURE III – SOCKET FUSION BENT STRAP TEST SPECIMEN23
TABLES
TABLE I – BUTT FUSION: APPROXIMATE MELT BEAD SIZE7
TABLE II – BUTT FUSION: BEAD WIDTHS PER WALL THICKNESS9
TABLE III – BUTT FUSION: TROUBLESHOOTING GUIDE13
TABLE IV – SADDLE FUSION: MAXIMUM HEATING/MINIMUM COOLING TIMES15
TABLE V – SADDLE FUSION: TROUBLESHOOTING GUIDE20
TABLE VI – SOCKET FUSION: TIME CYCLES22
TABLE VII – SOCKET FUSION: TROUBLESHOOTING GUIDE26


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PolyPipe Recommended Heat Fusion Joining Procedures