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Keywords: Why-Why analysis
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Proceedings Papers

Proc. ASME. IOGPC2021, ASME 2021 India Oil and Gas Pipeline Conference, V001T02A005, September 23–24, 2021
Publisher: American Society of Mechanical Engineers
Paper No: IOGPC2021-64352
... in high research by Why-Why analysis, it is clear that the reason frequency ERW process, weld area is subjected to of sub-surface defects on ERW pipe is due to presence of ultrasonic testing (UT). The purpose of UT is to detect non-metallic inclusions. On the basis of the composition any flaws...