2ISO 1089;5-8 Non-destructive testing of steel tubes--Part 8: Automated ultrasonic testing of seamless and welded steel tubes for the detection of laminar imperfections[S].
3ISO 10895-11 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[S].
4ISO 5185 Petroleum and natural gas industries-- Steel pipe for pipeline transportation systems[S].
5ISO 5817 Welding--Fusion--welded joints in steel, nickel, titanium and their alloys (beam welding excluded) --Quality levels for imperfections[S].
6CEN/TR 15134 Non-destructive testing-- Automated ultrasonic examination--Selection and application of systems[S].
7EN 58;3--1 Non--destructive testing--Ultrasonic examination--Part l: General principles[S].
