EFC Solid Rings

The solid transducer rings are typically used for standard screening of pipes with nominal size between 2 and 8 inches in diameter. The rings are attached to the pipe by tightening the two large handles which push the spring loaded transducers onto the pipe to obtain good shear contact.

Standard rings have 2 rows of transducers to transmit torsional wave modes. Customised rings can be specially produced in other sizes or with 4 rows of transducers to allow for inspection using both longitudinal and torsional guided wave modes.

Spring Loaded Transducers
High Temperature Version Available
Precision Milled Body
Ergonomic Fastening Handles

Available Models


Spring-loaded transducer ring for inspection of pipes up to 6” diameter. Key application areas include:

• Bare / Painted Pipes
• Sleeved / Unsleeved Road Crossing Pipes • Buried Pipes


Similar to LITE solid ring but specifically designed to inspect higher temperature pipes (< 350°C). Key application areas are the same as the ones listed for LITE rings but also include:

• High Temperature Pipes


Number of Channels
8 or 16
Nominal Pipe Size (NPS)
2” to 8” (DN 50 to 200)
Operating Temperature (LITE Model)
-40°C to 150°C (-40°F to 302°F)
Operating Temperature (HT Model)
-40°C to 350°C (-40°F to 662°F)
Radial Clearance
76 mm (3”)
Transduction System Compatibility
Wavemaker® G4 & G4mini