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1、ListofcontentsINTRODUCTION..............................................3Pipeweldinginverticaldown(downhill)withcellulosicelectrodes1-Preparationandtacking.....................................27Jointdetails.............................................................42-Jointin5G/PGposition.........
2、.............................29Jointtypes...............................................................53-Jointin6G/H-L045position...............................35Electrodepositioningangles...................................6Pipeclassification...................................................7Wel
3、dingofpipesinverticalup(uphill)Consumptionofelectrodes.....................................11withmixedcellolosic/basictechniqueASME/ENpositions..............................................131-Preparationandtacking.....................................382-Jointin5G/PFposition........................
4、..............403-Jointin2G/PCposition......................................44THEMANUALMETALARC4-Jiointin6G/H-L045position..............................47PROCESS...........................................................15Generalinformation..............................................16DEFECTS:CAU
5、SESANDREMEDIES......49Fillermaterials........................................................17Pipeweldcellulosicelectrodes................................17Basicelectrodes......................................................19AUTOMATICPIPEWELDING....................53Basicelectrodes-Technicaldata
6、............................20Cellulosicelectrodes-Technicaldfata.....................22Generalinformation..............................................54Fillermaterials........................................................55Weldingtechniquesandoperationalpractices.......57WELDINGTECHNIQUESExampl
7、esofWPS...................................................58ANDOPERATIVEPRACTICES.................25Comparisonbetweenthreeweldingmethods..........62Defectsandremedies........................................
