GB/T 42662-2023
ActiveNon-destructive testing of steel tubes—Automated ultrasonic testing for the detection of laminar imperfections in strip/plate used for the manufacture of welded steel tubes
钢管无损检测 焊接钢管用钢带/钢板分层缺欠的自动超声检测
钢管无损检测 焊接钢管用钢带/钢板分层缺欠的自动超声检测