GB/T 20490-2006
AbolishedSeamless and welded (except submerged arc-welded) steel tubes for pressure purposes - Ultrasonic testing for the detection of laminar imperfections
承压无缝和焊接（埋弧焊除外）钢管分层的超声检测
Application Summary AI generated
This standard specifies the ultrasonic testing method for detecting laminar imperfections in seamless and welded (excluding submerged arc-welded) steel tubes used for pressure purposes. It is applied in the metallurgical industry and manufacturing sectors to ensure the integrity of tubes intended for boilers, pressure vessels, and piping systems where internal flaws could compromise safety under pressure. The standard defines testing procedures, calibration requirements, and acceptance criteria for quality control during production or pre-service inspection.
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