On 5G welds, what usually determines the direction of the root pass?
The direction of the root pass in 5G welds.
The 5G horizontal fixed pipe position is most often used for welding of pipe. Weld produced in flat vertical up or vertical down and overhead position must be uniform in appearance and high quality.
When practicing these welds, the top of the pipe must be marked for future references. Moving the pipe will make welding easier, but the same side must stay on the top as shown in Figure-1.
The below figure represents the 5G horizontal fixed position.
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āāFigure-(1)
The welding of the root pass can be performed by welding uphill or downhill...
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