May I ask about pipeline welding processes and the selection of welding materials, as well as how to inspect after welding and what standards to follow?
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May I ask about pipeline welding processes and the selection of welding materials, as well as how to inspect after welding and what standards to follow?
6. Non-destructive testing: The internal quality of pipe welds shall be inspected by radiographic testing or ultrasonic testing in accordance with the provisions of the design documents. The methods and quality grading criteria for radiographic inspection or ultrasonic inspection shall comply with the provisions of the current **standard, ‘Construction and Acceptance Standards for Welding of Field Equipment and Industrial Pipelines’. 6.2 For the non-destructive testing of pipelines carrying toxic and flammable media, SH 3501 shall be followed in accordance with design requirements; for other pipelines, GB50235 shall apply.