How many tack welds are needed to hold a pipe joint in alignment for welding?
A) 4, one at the 12:00, 3:00, 6:00, and 9:00 o'clock positions.
B) 5 to 6
C) It depends on the size of the tack welds.
D) The number will vary depending on the pipe's diameter.
Correct Answer:
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