Transcription of HDPE Buttwelding Principles - HDPE Pipe Solutions
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HDPE Buttwelding Principles - HDPE Pipe Solutions
HDPE Buttwelding PrinciplesHDPE_buttwelding_v002 Copyright Marley pipe Systems (Pty) Ltd 2010 HDPE_buttwelding_v002 HDPE Buttwelding Principles2/11 ContentsGeneral 3 The Marley System 3 Equipment 4 Jointing Method 4 Pre-Welding Checks 4 Dummy Welds 5 Manual Welding Procedure 5 Rules for Butt-Fusion 8 Summary 8 Buttweld Time and Pressure Tables 9 Disclaimer 11 HDPE_buttwelding_v002 HDPE Buttwelding Principles /11 GeneralButt-fusion jointing is a thermofusion process which involves the simultaneous heating of the ends of two components which are to be joined until a melt state is attained on each contact
HDPE_buttwelding_v002 HDPE Buttwelding Principles /11 Pupped fittings are fabricated by butt-fusing, (in the factory), 0.5m lengths of pipe
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