SC Pressure And Process Piping Practice Questions - South Carolina Pressure And Process Piping Contractor Examination Exam

Which condition is the most common cause of porosity in a pipe weld?

A perfectly dry, well-purged joint welded to the WPS Moisture, oil, mill scale, or wind that contaminates the shielding or the molten puddle Using the specified filler metal listed on the WPS Maintaining the required preheat and interpass temperatures

Correct Answer:

Moisture, oil, mill scale, or wind that contaminates the shielding or the molten puddle

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