General Welding Guidelines - MCAAExplore further
2016-4-5u2002·u2002Alignment shall be done using external alignment clamps or by tack welding the ends. The use of welded lugs or attachments and wedges to bring pipe into alignment is permitted. If the base metal is alloy steel, the preheat required by the WPS shall be used for tack welding and for attachment of alignment materials. Lugs should be removed
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