WELD SEAM UT
Function
- Longitudinal & Spiral SAW pipe inspection
- Conventional multi-ch. or advanced phased array technique
- Primary & Final inspection system for quality control
- Pipe moving or probe moving mechanism
PERFORMANCE
- Coupling
- Water-column or water gap
- Frequency
- 2~5 MHz
- Flaw
-
Longitudinal flaw & transverse flaw
Laminar flaw in HAZ
- Test method
-
LF - Pulse echo or Tandem (mid-wall)
TF – On bead
Pulse echo + pitch catch(X-Scan)
C.V or P.A UT technique
- Flaw Detectability
-
N5 notch
3.0mm side FBH for tandem testing
According to API5L, SHELL
- Seam-tracking
- Automatic laser tracking