​What Is the Minimum Acceptance Criteria for the Depth of Porosity

question 8

Multiple Choice

​What is the minimum acceptance criteria for the depth of porosity for visual inspection of tubing welds?

• A) ​no porosity allowed
• B) ​1/64 in (0.4 mm)
• C) ​25% of the base metal thickness
• D) ​Ok as long as the weld does not leak

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