This International Standard specifies requirements for the ultrasonic testing of strips/plates used in the manufacture of welded tubes for the detection of laminar imperfections according to three different acceptance levels.
This ultrasonic inspection of the strips/plates shall be carried out in the pipe mill before or during pipe production, in the flat form.
This International Standard covers ultrasonic testing for the detection of laminar imperfections in strips/plates used in manufacture of welded steel tubes for pressure purposes.
Three different acceptance levels of laminar imperfection are considered. The choice between these acceptance level is within the province of the ISO Technical Committee responsible for the development of the relevant product standards.
Other less severe acceptance criteria may be specified in the relevant technical delivery document.
