scope:

This Standard specifies the automated angle beam ultrasonic examination (including the method using phased array probe) of longitudinal imperfections of seamless steel tubes and longitudinal imperfections of the welds of welded steel tubes (excluding submerged arc-welded tubes). It is normally applicable to steel tubes with an outside diameter equal to or greater than 10 mm.

If so specified by the product standard or agreed between the purchaser and the manufacturer, the method may be applied for inspection of transverse imperfections on seamless steel tubes, and longitudinal imperfections on the parent material of welded steel tubes.

NOTE 1 This Standard is normally applied to steel tubes with a ratio of the wall thickness to the outside diameter equal to or smaller than 20 %.

NOTE 2 ISO 10332, ISO 10893-10 and ISO 10893-11 permit the use of the Lamb wave technique for inspection of longitudinal imperfections.

NOTE 3 The International Standards corresponding to this Standard and the symbol of degree of correspondence are as follows.

ISO 10332 : 2010 Non-destructive testing of steel tubes - Automated ultrasonic testing of seamless and welded (except submerged arc-welded) steel tubes for verification of hydraulic leak-tightness

ISO 10893-10 : 2011 Non-destructive testing of steel tubes - Part 10 : Automated full peripheral ultrasonic testing of seamless and welded (except submerged arc-welded) steel tubes for the detection of longitudinal and/or transverse imperfections + Amendment 1 : 2020

ISO 10893-11 : 2011 Non-destructive testing of steel tubes - Part 11 : Automated ultrasonic testing of the weld seam of welded steel tubes for the detection of longitudinal and/or transverse imperfections + Amendment 1 : 2020 (Overall evaluation : MOD)

In addition, symbols which denote the degree of correspondence in the contents between the relevant International Standards and JIS are IDT (identical), MOD (modified), and NEQ (not equivalent) according to ISO/IEC Guide 21-1.