NNT

What NNT does

NNT Sp. z o.o. is a privately-held Polish limited liability company headquartered in Gdańsk, operating in the non-destructive testing (NDT) niche with a focus on magnetic measurement of steel structures. The company designs, manufactures, and sells proprietary diagnostic equipment centred on the Barkhausen effect and related magnetoelastic phenomena, enabling direct measurement of stress state (in MPa), microstructure degradation, and discontinuity presence in ferromagnetic steel without surface preparation. Core products include the MagStress5c fifth-generation handheld stress meter, the MagStress5D advanced full-stress diagnostic system with rotating magnetic field probe, the MagStress Burn thermal damage detector, and supporting modules (MEB3c, MEB4c, AEMS acoustic Barkhausen, ECT 2.1/3 eddy current, MPR-H2 flux leakage). The company also offers AquaGuard autonomous water purification drones and ancillary 3D printing services.

NNT's revenue model combines custom hardware sales (configured per client with probes, software, transport cases), on-site and laboratory diagnostic testing services, expert training and consultancy, and R&D project support (including EU-funded sub-contracting). Pricing is not publicly disclosed; all equipment is quoted on a contact basis. The go-to-market is sales-led and event-driven, targeting enterprise technical buyers in steel production, shipbuilding, power generation, defence, heavy industry, machinery, and increasingly railway. Recognised clients include ArcelorMittal, Stocznia CRIST, ALSTOM Elbląg, BOT Bełchatów/Opole/Turów, Ethos Energy, EC Gdańsk, Keller, Huta Ostrowiec (CELSA Group), and České dráhy. Methodology is formally recognised by UDT (Office of Technical Inspection) and PRS (Polish Register of Shipping), providing regulatory credibility in shipbuilding and power generation.

The company is academic-rooted, originating from research at Politechnika Gdańska, and maintains collaborative ties with IPPT PAN, Instytut Spawalnictwa Gliwice, Southwest Research Institute, EPRI, and several European and Japanese universities. Funding has come exclusively from non-dilutive EU grant programmes (cumulative disclosed value ~PLN 6.95M across three projects spanning 2014-2027) rather than venture capital. Headcount remains small at 1-10 employees, and the company is currently recruiting engineers to support R&D activities at the Gdańsk Science and Technology Park.

Name

NNT

Legal name

NNT Sp. z o.o.

Website

https://nntlab.com

Company type

Private

Founded year

2005

Operating status

Operating

Headcount range

1–10 employees

Short description

NNT Sp. z o.o. is a Gdańsk-based Polish company that designs and sells proprietary magnetic Barkhausen-effect non-destructive testing equipment and diagnostic services for stress, degradation, and flaw measurement in ferromagnetic steel structures, serving enterprise clients in shipbuilding, power generation, steel production, defence, heavy industry, and railway.

Ownership category

akta.pro rank

Product category

Non-destructive testing equipment

NAICS

Other Measuring and Controlling Device Manufacturing (334519), Testing Laboratories and Services (54138), Navigational, Measuring, Electromedical, and Control Instruments Manufacturing (3345), Testing Laboratories and Services (541380)

SIC

Industrial Instruments For Measurement, Display, And Control (3823), Services-Testing Laboratories (8734), Laboratory Analytical Instruments (3826)

akta.pro primary industry

Non-Destructive Testing (NDT) & Advanced Inspection (Phased Array, TOFD, Guided Wave) (EUAEAKAF)

akta.pro secondary industries

Electrical Testing & Certification (Protection Relays, Switchgear, Transformers) (EUAEAHAG), Marine Surveys, Testing & NDT (Thickness Gauging, UT/MPI, Pressure Testing, Commissioning) (TLAHAMAK), Non-Destructive Testing (NDT) & Inspection Services (IMAIACAI), NDT/NDE Inspection Equipment (Ultrasonic, eddy current, radiography, thermography) (IMAGAFAI), Corrosion Inspection & Coating/CP Surveys (CUI, CP, DCVG/ACVG) (EUAEAHAF)

Keywords

• Non-destructive testing
• Steel stress measurement
• Barkhausen effect analysis
• Magnetic NDT equipment
• Structural diagnostics

Headquarters

HQ city

Gdansk

HQ country

Poland

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Diagnostic Equipment Sales: NNT designs, manufactures, and sells proprietary diagnostic equipment including the MagStress family (MagStress5c, MagStress5D, MagStress Burn), MPR-H2 flux leakage meters, ECT eddy current devices, AEMS acoustic Barkhausen systems, and MEB-series Barkhausen analyzers. Equipment is sold as complete kits with probes, software, and transport cases, often customized per client need.
2. Diagnostic Testing Services: NNT performs on-site and laboratory diagnostic testing services for steel structures, including stress measurements, microstructure degradation assessments, and discontinuity detection using its magnetic NDT methods. Services include expert certifications recognized by UDT and PRS.
3. Training and Consultancy: NNT provides training programs on Barkhausen effect measurement methods and general steel non-destructive testing. Training is bundled with equipment purchases and offered separately for industry professionals. Expert consulting and technical expertise services are also provided.
4. R&D Project Support: NNT supports clients in EU-funded R&D projects by providing specialized apparatus, research documentation, feasibility studies, and expertise. R&D subcontracting and innovation support services are offered to steel industry companies seeking EU funding.
5. 3D Printing Services: NNT offers 3D printing services using FFF technology with a range of materials (ABS, PLA, PC, TPU, PET-G, Nylon, ASA, HIPS) and dual-extruder capabilities for prototyping and small-batch production.

Go-to-market motion3 records

Distribution channels3 records

Marketing channels7 records

Core offering

NNT develops, manufactures, and sells proprietary magnetic non-destructive testing (NDT) equipment for steel structures, centered on the MagStress family of Barkhausen-effect-based stress measurement devices (MagStress5c, MagStress5D, MagStress Burn) and supporting modules (MEB3c, MEB4c, AEMS, ECT 2.1, ECT 3, MPR-H2). The company also performs on-site and laboratory diagnostic testing, training, R&D consulting, and 3D printing services, and offers the AquaGuard autonomous water-purification drone system as a separate product line.

Product overview

NNT offers a comprehensive portfolio of diagnostic devices for non-destructive testing of steel structures, centered on the MagStress family of Barkhausen effect-based stress measurement instruments. The core MagStress5c and MagStress5D systems provide rapid, non-invasive steel stress diagnostics with results displayed directly in MPa. Supporting modules include MEB3c/MEB4c/AEMS for Barkhausen effect variants, ECT 2.1/ECT 3 for eddy current testing, and MPR-H2 for stray field detection. MagStress Burn targets grinding burn detection in machined steel. The company also offers AquaGuard autonomous water purification drones and 3D printing services, extending beyond its core NDT offerings.

Differentiator

Problem solved

Functional benefit

Brands

• MagStress: Family of devices measuring internal steel stress using the Barkhausen effect. Includes MagStress5c (5th generation gauge) and MagStress5D (advanced system with rotating magnetic field probe for full stress diagnostics).
• AquaGuard
• MagStress Burn
• Druk 3Dx

Products and services

• MagStress5c Fifth-generation handheld Barkhausen-effect intensity meter for rapid stress state diagnosis in ferromagnetic steel components and structures. It magnetically excites the test material and analyzes Barkhausen electromagnetic signals in real time, displaying stress values directly in MPa. Capable of testing through paint coatings under atmospheric conditions, providing results in less than 10 seconds for industrial quality control applications.
• MagStress5D (MEB2D) Advanced system for full and rapid stress diagnostics in steel elements, featuring an innovative cross-measuring probe that generates a rotating magnetic field to enable 360° stress distribution mapping from a single probe placement. Integrates with the MagStressACS automatic two-axis calibration system and provides full planar stress state with principal components s1 and s2 displayed in MPa, with measurement time under 1 second.
• MagStress Burn Specialized Barkhausen-effect-based tool for detecting thermal damage caused by grinding burns in steel. Designed for quality control of steel after machining and gear tooth inspection, with capability for robotic inspection integration in production environments.
• MEB3c Set for measuring Barkhausen effect intensity primarily in industrial conditions, featuring a yoke electromagnet and a ferrite-core detection coil for analysis of ferromagnetic steel magnetization dynamics.
• MEB4c Set for measuring the voltage signal of the Barkhausen effect and performing magnetic hysteresis loop analysis, with 1 MHz processing frequency and 16-bit resolution for high-precision laboratory magnetic measurements.
• AEMS (Acoustic Barkhausen Effect Testing System) Set for acoustic Barkhausen effect testing, equipped with a broadband acoustic emission probe, 2 MHz maximum processing frequency, and advanced analytical software for capturing magnetoacoustic emission signals from ferromagnetic steels.
• ECT 2.1 Eddy current testing device (ECT 2.1) used to evaluate changes in electromagnetic properties — electrical conductivity and magnetic susceptibility — related to microstructure modifications in steel, including austenitic steels and power plant pipe materials.
• ECT 3 Eddy current testing device (ECT 3) designed for rapid scanning of steel pipe microstructure state, optimized for automatic measurements in superheater tubes in power plant environments.
• MPR-H2 Magnetic Flux Leakage Meter Stray field intensity meter for magnetic induction measurement and defect detection in steel structures. Measures local changes in magnetic flux leakage field distribution to detect surface and subsurface discontinuities including cracks.
• AquaGuard Autonomous Water Purification Drones Multi-functional autonomous floating drone system for simultaneous cleaning of water from petrochemical and biological contaminants. Features autonomous navigation (GPS, ultrasonic radar), swarming capability, interchangeable cleaning cartridges, and real-time data communication. Designed for environmental remediation and industrial water-purification use cases.
• Diagnostic Testing Services for Steel Structures On-site and laboratory diagnostic testing services for steel structures, including stress measurements, microstructure degradation assessments, and discontinuity detection using NNT's proprietary magnetic NDT methods (Barkhausen effect, ECT, EMA, magnetic flux leakage). Services include expert certifications recognized by UDT and PRS regulatory bodies.
• Training and Consultancy Services Training programs on Barkhausen-effect measurement methods and general steel non-destructive testing, typically bundled with equipment purchases and also offered separately. Expert consulting and technical advisory services for industry professionals and R&D teams.
• 3D Printing Services (Druk 3Dx) FFF (Fused Filament Fabrication) 3D printing service with dual-channel extruder heads, supporting a range of materials including ABS, PLA, PC, TPU, PET-G, Nylon, ASA, and HIPS for prototyping and small-batch production runs.

Quantifiable outcome

• Stress measurement in less than 10 seconds (MagStress5c)
• +3 more outcomes

Named customers9 records

Segments6 records

Ideal customer profiles6 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature7 records

Partnerships

19 partnerships are on record, tiered core and minor.

• Evoluma Klaster Przemysłowy (formerly Klaster Obróbki Metali)coreStrategic or Co-development Partner · 15 February 2024NNT is a member of the Evoluma Industrial Cluster, a manufacturing and metal processing industry cluster based in the Pomerania region. NNT participates as a non-destructive testing expert, contributing specialized steel diagnostics knowledge to cluster activities and joint industry events.
• Bank Gospodarstwa Krajowego (BGK)minorOthers · 15 February 2024Bank Gospodarstwa Krajowego was a partner of the Cooperation in the Metal Industry Conference co-organized by Evoluma Klaster Przemysłowy, which NNT participated in as an expert partner presenting magnetic NDT solutions.
• PGZ Stocznia WojennacoreStrategic or Co-development Partner · 15 February 2024PGZ Stocznia Wojenna (Polish Armaments Group – Naval Shipyard) partnered with NNT at the Cooperation in the Metal Industry Conference, indicating potential collaboration in shipbuilding steel diagnostics and naval steel structure testing.
• Warmińsko-Mazurska Agencja Rozwoju Regionalnego (WMA.RR)minorOthers · 15 February 2024Regional development agency as a partner of the Cooperation in the Metal Industry Conference, supporting regional industrial development initiatives in which NNT participates.
• Instytut Kolejnictwa (Railway Research Institute, Poland)coreStrategic or Co-development Partner · 1 February 2017NNT participated in a seminar at the Railway Research Institute, presenting Barkhausen-based methods for railway steel component diagnostics to industry representatives from the institute, railway companies, and the Ministry of Infrastructure and Construction.
• Politechnika Gdańska (Gdańsk University of Technology)coreStrategic or Co-development PartnerNNT's origins trace to scientific work at Politechnika Gdańska in magnetic properties of solids. The company maintains ongoing collaborative relationships with the university for research and development of magnetic NDT methods.
• Instytut Energetyki WarszawacoreStrategic or Co-development PartnerReference institution for NNT's methods in power plant diagnostics. Collaborative validation and research on steel degradation testing in energy sector applications.
• IPPT PAN (Instytut Podstawowych Problemów Techniki, Polish Academy of Sciences)coreStrategic or Co-development PartnerLong-standing research collaboration with Poland's leading technical science institute on fundamental magnetic NDT methodologies.
• Instytut Spawalnictwa w GliwicachcoreStrategic or Co-development PartnerCollaboration with the Welding Institute in Gliwice for joint seminars and validation of NDT methods in welded steel structures, with reciprocal conference participation.
• Instytut Transportu Samochodowego, WarszawaminorStrategic or Co-development PartnerResearch collaboration on automotive steel component testing using magnetic NDT methods.
• Instytut Metalurgii Żelaza (IMŻ) GliwiceminorStrategic or Co-development PartnerCollaborative research institution in metallurgical testing and iron metallurgy, supporting NNT's steel industry diagnostics validation.
• Instytut Metalurgii i Inżynierii Materiałowej (IMN) SkawinaminorStrategic or Co-development PartnerMaterials science research institute collaborating with NNT on steel quality and degradation testing methodologies.
• space3ac Accelerator (CELSA Group)coreStrategic or Co-development PartnerNNT participated in the space3ac accelerator program, working on steel product quality testing solutions for Huta Ostrowiec (CELSA Group), a major Polish steel producer. This collaboration demonstrates commercial validation of NNT's technology in the steel industry.
• INSA de Lyon and Ecole Centrale de Lyon (France)coreStrategic or Co-development PartnerInternational research collaboration with leading French engineering schools on magnetic NDT fundamentals and applications.
• Vienna University of Technology (Austria)minorStrategic or Co-development PartnerInternational academic partnership for magnetic testing research and development.
• Science Academy Prague (Czech Republic)minorStrategic or Co-development PartnerInternational academic collaboration with Czech research institution on magnetic non-destructive testing methods.
• National Technical University of Athens (Greece)minorStrategic or Co-development PartnerInternational academic partnership in magnetic NDT research with Greek technical university.
• Southwest Research Institute San Antonio and EPRI Charlotte (USA)coreStrategic or Co-development PartnerLong-standing international partnerships with major US research institutions — Southwest Research Institute and EPRI (Electric Power Research Institute) — for validation and development of magnetic NDT in power generation applications.
• Iwate University (Japan)minorStrategic or Co-development PartnerInternational academic partnership with Japanese university for magnetic materials and NDT research collaboration.

Scale indicators5 records

Recent moves6 records

Expansion highlights7 records

Direct peers

• Stresstech: Finland-based specialist in Barkhausen noise and magnetic stress measurement equipment for industrial applications. Direct competitor to NNT in the same core technology space, serving overlapping industries including automotive, aerospace, and heavy industry.
• Magnetic Analysis Corporation: US-based manufacturer of non-destructive testing equipment including eddy current and magnetic flux leakage systems for metal inspection. Direct competitor in magnetic NDT methods for steel tube, bar, and wire inspection in industrial production environments.
• Institut Dr. Foerster: German specialist in electromagnetic NDT equipment including eddy current and magnetic testing systems for metals. Direct competitor in industrial magnetic testing methods for steel quality control and stress measurement.

Broad incumbents

• Applus+ IDIADA: Global testing, inspection, and certification services company with NDT capabilities across multiple industries. Comparable to NNT's services business with broader geographic reach and diversified inspection offerings.
• Bureau Veritas: International testing, inspection, and certification company providing industrial asset integrity services including NDT. Competes with NNT's services offering to shipbuilding, energy, and infrastructure clients globally.
• Sonatest: UK-based manufacturer of ultrasonic flaw detectors and NDT equipment for industrial inspection. Competes in adjacent NDT technologies with similar customer base in aerospace, energy, and infrastructure inspection.
• Evident (formerly Olympus Industrial): Major manufacturer of industrial NDT equipment including ultrasonic, eddy current, and visual testing systems. Broader incumbent offering competing technologies to NNT's magnetic methods, serving similar industrial clients with wider product portfolios.
• SGS Industrial: Global leader in inspection, verification, and testing services with extensive NDT capabilities for industrial applications. Provides similar steel structure inspection services to NNT across multiple geographies.

Others

• EPRI (Electric Power Research Institute): US-based non-profit research organization that conducts collaborative NDT research for power generation applications. NNT has a stated partnership with EPRI Charlotte, positioning it as both a research collaborator and potential indirect competitor in power plant NDT research.

Emerging players

• TWI (The Welding Institute): UK-based research and technology organization offering welding and NDT expertise including stress measurement and materials characterization. Comparable to NNT in welding-related NDT and collaborative research approach.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/@NNTLab
• Facebookfacebook.com/NNT.LAB
• LinkedInlinkedin.com/company/nnt-sp-z-o-o

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Funding overview

Funding rounds4 records

Investors3 records

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 NNT