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ERW Solutions: In-Line ERW High-Temperature Inspection System

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ERW Solutions: In-Line ERW High-Temperature Inspection System

Fully Automated ERW Tube Process-Control

The In-Line ERW High-Temperature Inspection System integrates into the production line between the weld cooling and annealing, where the pipe temperature is 100 °C (212 °F) or lower. A special self-cooling wedge combined with automatic alarms protect the phased array (PA) probe against excessive temperatures.

Using conventional ultrasonic (UT) and PA technology, the system inspects the internal and external surfaces of the ERW seam and the heat-affected zone (HAZ) in pipes ranging from 60.3 mm to 508 mm (2.4 in. to 20 in.) OD. Automatic weld tracking technology connected to servomotor-driven mechanisms helps ensure coverage of the region of interest.

The following typical defects are detected:

  • Longitudinal cracks
  • Through-drilled holes
  • Lamination defects in the HAZ (up to 25 mm (1 in.) on each side of the weld)

System Performance

Standard Product Range Diameter 60.3 mm to 508 mm (2.375 in. to 20 in.)
Wall Thickness 3 mm to 16 mm (0.118 in. to 0.630 in.)
Speed Typically 600 mm/sec (limited by the production line speed)
Coverage 100% weld volume for cracks/TDH and up to 25 mm on each side of weld for lamination detection
Data Presentation Real-Time Inspection Results C-scan, A-scan, B-scan, strip charts, and alarms
Inspection Modes Typical Inspection Modes Longitudinal and lamination
Operating Temperature Up to 100°C
Detection Capabilities for Typical Reference Defects Repeatability Longitudinal notches: <3 dB; 3.2 mm TDH: <4 dB; 1.6 mm TDH: <5 dB; 6.35 mm FBH: <3 dB; 3.2 mm FBH: <4 dB
Standards ISO, API
Reporting and Data Storage Report Types Inspection, calibration, and calibration-check user-configurable reports
Storage Real-time database inspection data storage


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