4Road JA de. High speed ultrasonic inspection of field girth welds during pipeline construction[J]. European Journal of Nondestructive Testing, 1991,1(1) :33.
5Heckhauser H, Schuty S. Advanced technology in automated ultrasonic weld inspection of pipleline girth welds[J]. Insight, 1995,37(6) :440.
6Road JA de, Dijkstra FH. Machanized ultrasonic testing on girth welds during pipeline construction[J].Materials Evaluation, 1997,55 (8): 890.
7ASTM E1961-1998, Standard Practice for Mechanized Ultrasonic Examination of Girth Welds Using Zonal Discrimination with Focused Search Units[S].
8API 1104, Welding of Pipelines and Related Facilities [S].
9Section TWE-1 Total Weld Evaluation of Mechanized GMAW Pipeline Girth Welds, Transcanada Pipeline Welder Inspectors' Manual 1996[S].