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HIGH-SPEED CIRCUMFERENTIAL ROOT PASS WELDING

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A NEW HIGH-SPEED CIRCUMFERENTIAL ROOT PASS WELDING FOR PIPELINE CONSTRUCTION

MECHANICAL PROPERTIES OF WELDED JOINTSteel pipes used are API 5LX X52 and X60, with 16 inch outer dia. The wall thickness is 0.5 inch for X52 and 0.25 inch for X60. Welding wire used is of 1.2 mm dia., containing REM. Chemical compositions of pipes and the filler wire are listed in attached Table.

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