Questions regarding ultrasonic testing of the circumferential butt welds of φ325*7 steel pipes
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Now, NB/T 47013.3-2015 has expanded the range of ultrasonic testing, from 8–400 mm to 6–500 mm； Putting that aside for now, there is a document from June 2015 that requires an ultrasound report to be prepared; I’m not sure how to do this, so I earnestly ask for your guidance. GB11345-2013 specifies that it is applicable to ultrasonic testing for sizes over 8 mm ； JB/T 4730-2005 6.1 also specifies that ultrasonic testing of circumferential butt joints in pipes and pressure pipelines is applicable to butt joints with a wall thickness of 4 mm or more and an outer diameter of 32 mm–159 mm, or those with a wall thickness of 4–6 mm and an outer diameter of 159 mm or more. So, how should ultrasonic testing be carried out on the welds of φ325*7 steel pipes?
JB/T 4730-2005 5.1