Sonatest

What Sonatest does

Sonatest Limited is a privately held UK-headquartered manufacturer of ultrasonic and advanced non-destructive testing (NDT) instruments, founded in 1958 in Milton Keynes. The company designs, manufactures, and markets a comprehensive portfolio spanning phased array flaw detectors (Veo3, XEO, RSflite), conventional ultrasonic flaw detectors (WAVE, Masterscan D-70/700m, Sitescan D-50/500S, Railscan 125+), thickness gauges (Alph gage+, Son gage IV, T-Gage V), wheel probes and scanners (WheelProbe 2, AXYS, Odi, Bracelet, STIX, ROTIX), specialized ToFD and HTHA transducers, calibration blocks, and a proprietary software stack for scan planning, post-acquisition analysis, and remote access (UTstudio+, UTmap, Xpair, WAVE Companion, UTlity). Within the UK, Sonatest also distributes the Carestream INDUSTREX radiographic product line, adding CR readers, DR detectors, film processors, imaging plates, and chemicals to its portfolio. Its proprietary TFMi™ (Intermodal Total Focusing Method) technology, co-developed with Holloway NDT, enables simultaneous multi-mode ultrasonic imaging for complex-geometry inspection such as blind hole assessment, and is a registered trademark differentiating the Veo3 platform.

The company sells into twelve vertical markets including aerospace (Boeing, Airbus), oil and gas (Shell), power generation (Eon), rail (Network Rail), chemical and petrochemical, maritime, military, automotive, mining, construction and infrastructure, NDT service providers, and NDT education. It monetizes through a mix of hardware sales (the dominant revenue stream), software licenses, calibration and repair services (RMA), operator training, and UK radiographic product distribution, with all transactions handled through quote requests rather than transparent pricing.

Sonatest operates from three locations: its headquarters and primary manufacturing base in Milton Keynes, UK; a research centre in Quebec City, Canada; and a production facility in San Antonio, USA. Go-to-market is sales-led and channel-driven, combining direct field and inside sales for the UK, USA, and Canada with a global network of more than 80 named distributors and agents covering 50+ countries across Africa, Asia, Europe, the Middle East, North America, and South America. Demand generation is built on technical content marketing (blog, application notes, technical papers), a YouTube channel, LinkedIn engagement, and recurring participation in industry conferences such as ASNT 2024 and ASNT 2025.

Name

Sonatest

Legal name

Sonatest Limited

Website

https://sonatest.com

Company type

Private

Founded year

1958

Operating status

Operating

Headcount range

101–250 employees

Short description

Sonatest designs, manufactures, and markets ultrasonic and advanced non-destructive testing instruments (phased array flaw detectors, thickness gauges, wheel probes, scanners, and analysis software) used across aerospace, oil and gas, rail, maritime, automotive, and other industrial sectors worldwide.

Ownership category

akta.pro rank

Product category

Non-Destructive Testing (NDT) Equipment

NAICS

Navigational, Measuring, Electromedical, and Control Instruments Manufacturing (3345), Navigational, Measuring, Electromedical, and Control Instruments Manufacturing (33451), Irradiation Apparatus Manufacturing (334517), Testing Laboratories and Services (541380)

SIC

Industrial Instruments For Measurement, Display, And Control (3823), Measuring & Controlling Devices, Nec (3829), X-Ray Apparatus & Tubes & Related Irradiation Apparatus (3844), Laboratory Analytical Instruments (3826)

akta.pro primary industry

NDT/NDE Inspection Equipment (Ultrasonic, eddy current, radiography, thermography) (IMAGAFAI)

akta.pro secondary industries

Non-Destructive Testing (NDT) & Advanced Inspection (Phased Array, TOFD, Guided Wave) (EUAEAKAF), NDT/Inspection & Testing Services (Aviation) (IMABALAJ), Industrial Radiography & NDT Services (Gamma radiography, source handling, field inspection) (EUAKAIAF), Marine Surveys, Testing & NDT (Thickness Gauging, UT/MPI, Pressure Testing, Commissioning) (TLAHAMAK)

Keywords

• Ultrasonic flaw detection
• Phased array testing
• Non-destructive testing
• Thickness measurement instruments
• NDT inspection equipment

Headquarters

HQ city

Wolverton

HQ country

United Kingdom

HQ region

Europe

Offices3 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Operations, Personnel, Technology or R&D, Marketing or Sales, Supply Chain, Infrastructure

Revenue model

1. Hardware Sales: Sale of ultrasonic flaw detectors, phased array systems, thickness gauges, transducers, scanners, and peripheral equipment. Products include Veo3, XEO, WAVE, Masterscan, Sitescan, Railscan, RSflite, and related hardware.
2. Software Licenses and Subscriptions: Sale and licensing of software products including UTstudio+, UTmap, Xpair, WAVE Companion, UTLity for data analysis, remote access, and inspection planning.
3. Service & Repair: Return Merchandise Authorisation (RMA) system for fault repair and annual calibration services. Offers full or summary calibration reports for PA units.
4. Training Services: Training services for NDT personnel on equipment operation and inspection techniques.
5. Application Evaluation: Technical application evaluation services to support customer inspection requirements.
6. Radiographic Products Distribution: Distribution of Carestream INDUSTREX products including digital imaging plates, processors, chemicals, and X-ray films within the UK only.

Go-to-market motion1 record

Distribution channels4 records

Marketing channels6 records

Core offering

Sonatest designs, manufactures, and markets ultrasonic non-destructive testing (NDT) instruments used to detect defects in industrial components without causing damage. Its product portfolio spans phased array flaw detectors (Veo3, XEO, RSflite), conventional ultrasonic flaw detectors (WAVE, Masterscan, Sitescan, Railscan), thickness gauges, wheel probes, scanners, transducers, and analysis software. The company also offers calibration, repair, and training services, and distributes Carestream INDUSTREX radiographic products in the UK.

Product overview

Sonatest is a manufacturer of ultrasonic and advanced non-destructive testing equipment, offering a comprehensive portfolio of flaw detectors, thickness gauges, phased array systems, scanners, transducers, and analysis software. The product range includes phased array instruments (Veo3, XEO, RSflite), conventional ultrasonic flaw detectors (WAVE, Masterscan D-70, Masterscan 700m, Sitescan D-50, Sitescan 500S, Railscan 125+), thickness gauges (Alph gage+, Son gage IV, T-Gage V), wheel probes and scanners (WheelProbe 2, AXYS, STIX, ROTIX), transducers (DAAH, X-Series, angle beam, compression, immersion), calibration blocks, and analysis software (UTstudio+, UTmap, Xpair, WAVE Companion). Sonatest also distributes Carestream radiographic products including CR readers (HPX Pro, HPX1-Plus), DR detectors, film processors (M37, M43ic), digital imaging plates, and INDUSTREX chemicals. The ecosystem includes specialized software for remote access, data analysis, and automated defect detection.

Differentiator

Problem solved

Functional benefit

Brands

• XEO: The NEWEST and FASTEST PAUT Device on the market.

Products and services

• Veo3 High-speed 128-channel phased array ultrasonic testing (PAUT) instrument with 125 MHz acquisition frequency for comprehensive weld and corrosion inspection in field and in-house environments.
• XEO Newest and fastest PAUT (phased array ultrasonic testing) device, representing the latest-generation phased array flaw detector from Sonatest.
• WAVE Digital ultrasonic flaw detector with interactive scan plan and DXF CAD import for complex part inspection.
• Masterscan D-70 Broadband ultrasonic flaw detector in a portable D-Series casing designed for field inspections.
• Masterscan 700m Rugged portable ultrasonic flaw detector for demanding industrial environments.
• Sitescan D-50 Entry-level broadband ultrasonic flaw detector with T-log thickness logging capability.
• Sitescan 500S Portable ultrasonic flaw detector for general inspection applications.
• Railscan 125+ Specialized ultrasonic flaw detector purpose-built for rail-sector inspection, including bolt hole and axle inspection.
• RSflite Compact 128-channel linear scanning phased array instrument optimized for composite inspection workflows.
• Alph gage+ High-precision ultrasonic thickness gauge designed for corrosion monitoring and precision thickness measurement applications.
• Son gage IV Ultrasonic thickness gauge for industrial thickness measurement applications.
• T-Gage V Portable ultrasonic thickness gauge for various industrial measurement applications.
• WheelProbe 2 Patented phased array probe in an adaptive rubber wheel with captive array for corrosion mapping on uneven, curved, and large surface areas; available in 64 or 128 element versions with multiple frequency options.
• AXYS Compact single-axis encoder for precise linear scanning when paired with phased array systems.
• Odi II Enhanced-version ultrasonic scanner for advanced non-destructive inspection applications.
• Bracelet Ultrasonic scanner specifically designed for bore and pipe weld inspection.
• STIX Upgradeable Upgradeable weld scanner with modular capabilities for phased array weld inspection.
• STIX Long Seam Specialized ultrasonic scanner for long-seam weld inspection applications.
• ROTIX Rotary ultrasonic scanner for circumferential and rotary inspection applications.
• DAAH Dual Linear Array Probe Dual linear array phased array probe designed for manual and encoded weld inspection applications.
• HTHA Transducer High-Temperature Hydrogen Attack (HTHA) transducer for specialized ultrasonic inspection in petrochemical environments.
• ToFD Transducer Time of Flight Diffraction (ToFD) transducer for crack detection and sizing in weld and component inspection.
• UTstudio+ Comprehensive PC-based post-acquisition data analysis software for phased array inspection results.
• UTmap PC-based C-scan data review software for analyzing corrosion mapping data and composite panel inspection, with automated defect detection algorithms.
• Xpair PC-based remote access software enabling remote viewing and control of Sonatest instruments via local network or cloud connection.
• WAVE Companion PC-based configuration platform for creating custom applications, uploading drawings, creating scan plans, and transferring files to and from WAVE units.
• Carestream HPX Pro Portable CR (computed radiography) imaging system with single-pass scan/erase protocol for high image quality in field conditions; distributed by Sonatest in the UK.
• Carestream HPX1-Plus Full-width CR reader capable of handling extra-long imaging plates with high sensitivity for comprehensive radiographic imaging; distributed by Sonatest in the UK.
• HPX-DR Non-Glass DR Detector Durable digital radiography (DR) detector with plastic housing for maximum durability, featuring wireless operation and IP57 weatherproof rating; distributed by Sonatest in the UK.
• Service & Repair (RMA and Calibration) Factory-authorised Return Merchandise Authorisation (RMA) fault repair service and annual calibration service for PA units, offering full or summary calibration reports.
• Training Services for NDT Personnel Training services for NDT personnel covering equipment operation and ultrasonic inspection techniques.
• Application Evaluation Services Technical application evaluation services to support customer inspection requirements and feasibility assessments.

Quantifiable outcome

• 125 MHz acquisition frequency on Veo3 for industry-leading scanning speed
• +2 more outcomes

Named customers5 records

Segments11 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

AI capability5 records

Feature6 records

Partnerships

Ten partnerships are on record, tiered core, major, regional and minor.

• Holloway NDTcoreStrategic or Co-development PartnerStrategic partnership for development of TFMi™ (Intermodal Total Focusing Method) technology, enabling multi-mode imaging capabilities in Sonatest's Veo3 instrument for improved complex geometry assessment.
• Carestream HealthmajorTechnology or IntegrationUK distributor for Carestream INDUSTREX NDT products including digital imaging plates, processors, chemicals, X-ray films, and digital imaging software. Partnership covers radiographic testing equipment complementing Sonatest's ultrasonic product line.
• Gammatec NDT Supplies (PTY) LtdregionalChannel Partner/ Reseller/ DistributorDistributor for South Africa covering sales and service of Sonatest products in the region.
• FOERSTER GroupregionalChannel Partner/ Reseller/ DistributorDistributor for Germany and USA, providing sales and service coverage for Sonatest products in these markets.
• Aimil LtdregionalChannel Partner/ Reseller/ DistributorDistributor for India, providing sales and service coverage for Sonatest products in the Indian market.
• Russell Fraser Sales Pty LtdregionalChannel Partner/ Reseller/ DistributorDistributor for Australia, providing sales and service coverage for Sonatest products in the Australian market.
• De Hua Materials Testing Co. Ltd.regionalChannel Partner/ Reseller/ DistributorDistributor for Hong Kong, providing sales and service coverage for Sonatest products.
• Oceanscan LtdregionalChannel Partner/ Reseller/ DistributorDistributor for United Kingdom, providing specialized marine and offshore sales and service coverage.
• Innerspec TechnologiesregionalChannel Partner/ Reseller/ DistributorDistributor for Spain, providing sales and service coverage for Sonatest products.
• WeeeCare Compliance SchememinorOthersWEEE compliance scheme membership for UK WEEE Regulations compliance, providing producer registration number WEE/GB0002ZR.

Scale indicators3 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Evident (formerly Olympus Industrial / Olympus IMS): Evident is the largest direct competitor in ultrasonic, phased array, and eddy-current NDT instruments, mirroring Sonatest's core offering and competing on similar aerospace, oil & gas, and power-generation accounts with a broader multi-modality portfolio.
• Waygate Technologies (a Baker Hughes business): Waygate combines legacy GE Inspection Technologies and Baker Hughes NDT product lines into a direct rival selling ultrasonic, phased array, and radiographic instruments into overlapping industrial and energy end markets.
• Eddyfi Technologies: Eddyfi specializes in advanced ultrasonic (PAUT, ToFD, TFM) and eddy-current NDT instruments, head-to-head with Sonatest's Veo3/XEO/Rsflite phased array platform and competing for the same aerospace, oil & gas, and power-generation inspection budgets.
• Zetec (Roper Technologies subsidiary): Zetec designs and manufactures ultrasonic and eddy-current NDT instruments and probes — a direct rival in phased array, ToFD, and bolt-hole inspection workflows used in aerospace MRO and energy asset integrity.
• NDT Systems & Services (Nippon Steel subsidiary): NDT Systems & Services manufactures ultrasonic, eddy-current, and remote-visual inspection equipment for industrial customers, directly overlapping Sonatest's ultrasonic portfolio and serving petrochemical, power, and aerospace accounts.

Broad incumbents

• Mistras Group: Mistras is a broad NDT services and instrumentation incumbent — overlapping with Sonatest's ultrasonic instruments while also being an end-customer of NDT service providers that buy Sonatest equipment, making it both competitor and indirect channel.
• Intertek: Intertek operates a global TIC (testing, inspection, certification) network and is one of the largest indirect buyers of ultrasonic NDT equipment, competing with Sonatest at the services layer and shaping enterprise buying standards for instruments.
• Bureau Veritas: Bureau Veritas is a global TIC incumbent whose industrial and asset-integrity inspection services consume ultrasonic NDT equipment at scale, competing indirectly with Sonatest through its service-provider accounts and standards influence.

Regional players

• Ashtead Technology: Ashtead is a UK-headquartered NDT equipment rental and sales specialist focused on Europe, the Middle East, and Africa — it competes for the same industrial NDT equipment budgets and often substitutes for outright sales of instruments like Sonatest's Veo3 and WAVE.

Emerging players

• ETher NDE: ETher NDE is a UK-based emerging specialist in ultrasonic and eddy-current NDT, overlapping with Sonatest's Veo3/WAVE/Railscan product lines among rail, aerospace, and power-generation customers and competing for the same mid-market phased array deals.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks7 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/user/TheSonatest
• LinkedInlinkedin.com/company/sonatest
• Xx.com/sonatestltd

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Sonatest