CSN ISO 9764:1994 Nondestructive testing. Electric resistance and induction welded steel tubes for pressure purposes. Ultrasonic testing of weld seam for the detection of longitudinal imperfections
1994CSN ISO 9764:1994 Nondestructive testing. Electric resistance and induction welded steel tubes for pressure purposes. Ultrasonic testing of weld seam for the detection of longitudinal imperfections