Wedge ultrasonic transducer BBND-WI

direct-contacthigh-temperaturewith delay line

Product overview
The BBND‑WI is an ultrasonic angle‑beam probe designed for weld inspection on pipelines, pressure vessels, tanks, steel structures, bridges, rail components and industrial equipment. It introduces ultrasound at a selectable angle to detect cracks, lack of fusion, incomplete penetration, slag inclusions and other discontinuities in the weld and heat‑affected zone.

Key features

• Angle‑beam ultrasonic weld flaw detection for industrial applications
• Multiple frequencies, inspection angles and element sizes
• Configurations for large components, small parts and restricted access
• Shear‑wave and refracted longitudinal‑wave inspection solutions
• Conventional single‑element, dual‑element and phased‑array variants
• Integral, replaceable and elevated‑temperature wedge options
• Suitable for manual inspection and scanner integration

Conventional configuration range
Parameter: Available options
Product type: Ultrasonic weld inspection probe
Inspection method: Contact angle‑beam inspection
Frequency: 1, 2, 2.25, 4, 5 MHz
Inspection angle: 35°, 38°, 45°, 60°, 70°, 77°, 80°, 90°
Element arrangement: Single or dual element
Probe body: Large, compact, small
Wedge: Integral, replaceable, quick‑change, custom curved
Connector: Lemo 1, Lemo 00, BNC, Microdot, MMD
Elevated‑temperature wedge: Selected configurations for short contact up to 200°C


Phased‑array configuration range
Parameter: Available options
Frequency: 1, 1.5, 2.25, 3.5, 5, 7.5 MHz
Element count: 16, 32, 64, 128
Pitch: 0.25–3 mm
Elevation: 6–25 mm
Wedge: Flat or curved angle wedge and delay line
Scanning functions: Electronic angle control, focusing, linear scanning


Application configurations
Inspection task: Recommended configuration direction
General weld inspection: Standard body with multiple angle options
Thick‑wall pipes and pressure vessels: Low‑to‑medium frequency with larger element
Small welds and restricted access: Compact or small‑body configuration
Coarse‑grain and austenitic welds: Lower frequency, refracted longitudinal wave, or dual element
Elevated‑temperature welds: Elevated‑temperature wedge
Multi‑angle and wide‑area inspection: Phased‑array configuration


Typical applications

• Pipeline girth and longitudinal weld inspection
• Pressure‑vessel, tank and boiler weld inspection
• Bridge and structural‑steel weld inspection
• Rail, wheel, axle and transportation component inspection
• Inclined flaw detection in castings, forgings and complex structures
• Austenitic and coarse‑grain weld inspection
• Aerospace structures and critical load‑bearing components

Selection parameters
Selection is based on test material, weld type, wall thickness, joint geometry, inspection standard, required beam angle, frequency, scan coverage, wedge curvature, operating temperature and instrument interface.

Compatible equipment

• Conventional ultrasonic flaw detector or phased‑array instrument
• Probe cable
• Matching wedge
• Ultrasonic couplant
• Weld calibration block
• Manual or automated scanner

Operating requirements

• Match inspection angle and frequency to weld geometry, material and applicable standard
• Match wedge contact surface to component curvature and maintain stable coupling
• Calibrate sound path, angle, sensitivity and gain with an appropriate reference block before inspection
• Follow contact‑time and cooling requirements for elevated‑temperature configurations

Technical specifications

• Model / Series: BBND‑WI
• Conventional frequencies: 1, 2, 2.25, 4, 5 MHz
• Phased‑array frequencies: 1, 1.5, 2.25, 3.5, 5, 7.5 MHz
• Inspection angles (conventional): 35°, 38°, 45°, 60°, 70°, 77°, 80°, 90°
• Element arrangement (conventional): Single or dual
• Phased‑array element counts: 16, 32, 64, 128
• Phased‑array pitch: 0.25–3 mm
• Phased‑array elevation: 6–25 mm
• Probe body sizes: Large, compact, small
• Wedge types: Integral, replaceable, quick‑change, custom‑curved; flat or curved angle wedge and delay line (PA)
• Connectors: Lemo 1, Lemo 00, BNC, Microdot, MMD
• Elevated‑temperature capability: Selected wedge configurations for short contact on surfaces up to 200°C
• Scanning functions (PA): Electronic angle control, focusing, linear scanning