Standard Practice for Ultrasonic Testing of the Weld Zone of Welded Pipe and Tubing
NORMA vydaná dňa 1.12.2020
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Označenie normy: ASTM E273-20
Dátum vydania normy: 1.12.2020
Počet strán: 5
Približná hmotnosť: 15 g (0.03 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM
This practice describes the general ultrasonic examination procedures for the detection of discontinuities in the weld and adjacent heat affected zones of welded pipe and tubing by scanning with relative motion between the search unit and pipe or tube. When contact or unfocused immersion search units are employed, this practice is intended for tubular products having specified outside diameters and wall thicknesses. And when properly focused immersion search units are employed, this practice may also be applied to material of smaller diameter and thinner wall. This practice does not establish acceptance criteria for this procedure. A pulsed ultrasonic angle beam shall be propagated in the wall of the pipe or tube by either the surface contact or immersion method. The weld line shall then be examined from both sides to ensure detection of imperfections with a shape or orientation that produces a preferential direction of reflection.
Keywords:
angle beam, longitudinal welded pipe, longitudinal welded tubing, nondestructive examination, phased array, ultrasonic examination,, ICS Number Code 23.040.01 (Pipeline components in general. Pipelines)