KontrollTechnik GmbH

What KontrollTechnik GmbH does

KontrollTechnik GmbH is a German private limited company founded in 1977 and headquartered in Schwarmstedt, Niedersachsen, that specializes in eddy current non-destructive testing (NDT) services for heavy-industrial assets. The company performs on-site inspections of heat exchanger tubes, condenser and boiler tubes, reformer tubes, storage tanks, pressure vessels, pipework, and welds for customers in power generation (including nuclear), oil & gas, petrochemical, chemical, and offshore installations. Service delivery is executed globally from its German headquarters and a French regional office in Norroy-le-Veneur (Moselle), carried out by qualified ZfP (NDT) engineers and analysts.

The firm's technical platform centers on proprietary eddy current methods registered as trademarks: SLOFEC® (eddy current combined with superimposed DC field magnetization, enabling subsurface corrosion detection through non-conductive coatings up to 10mm and wall thicknesses up to 25mm), C-MEC® (multi-frequency remote field eddy current for ferromagnetic tubes), and the TMT eddyMax® computer-integrated data acquisition and signal processing system supplied under a core technology partnership with TMT Test Maschinen Technik GmbH. Hardware offerings include the SLOFEC® FloorScanner (FS300PM.V2 / FS400EM.V2), SLOFEC® Wall Scanner, Reformer Pipe Scanner RPS 360, the Megasus Manipulator for large-diameter underground vessels, plus customized inspection solutions such as Pipe Elbow Scanners for nuclear applications and high-temperature Weldolet crack testing systems operating at 500°C+. Weld inspection is supported by an 8-sensor array system capable of detecting cracks as small as 2mm depth and 10mm length under coatings up to 6mm.

The business operates a professional services and equipment hybrid model. Revenue derives primarily from on-site inspection engagements priced on a quote-driven basis per project scope, with proprietary scanners and eddyMax® instrumentation deployed in the field. The company holds ISO 9001, SCC, Achilles, and KTA 1401 (nuclear safety) certifications that act as pre-qualifications for utility, refinery, and nuclear customers. With approximately 12 employees across both offices, ownership remains under the founding Kelb family (Wilhelm and Felix Kelb serve as Managing Directors), and growth is pursued through incremental product development and customized inspection solutions rather than M&A or external funding.

Name

KontrollTechnik GmbH

Legal name

KontrollTechnik GmbH

Website

https://kontrolltechnik.com

Company type

Private

Founded year

1977

Operating status

Operating

Headcount range

11–50 employees

Short description

KontrollTechnik GmbH is a German eddy current non-destructive testing firm founded in 1977 that delivers on-site inspection services for heat exchangers, pipes, tanks, and welds to power generation, oil & gas, petrochemical, nuclear, and offshore customers worldwide.

Ownership category

akta.pro rank

Product category

Industrial Non-Destructive Testing Services

NAICS

Testing Laboratories and Services (541380), Testing Laboratories and Services (54138)

SIC

Services-Testing Laboratories (8734), Instruments For Meas & Testing Of Electricity & Elec Signals (3825), Industrial Instruments For Measurement, Display, And Control (3823)

akta.pro primary industry

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

akta.pro secondary industries

Non-Destructive Testing (NDT) & Inspection Services (IMAIACAI), Pressure Equipment, Boilers & Heat Exchanger Inspection (EUAEAHAB), Storage Tank Inspection (AST/UST) (EUAEAHAC), NDT/NDE Inspection Equipment (Ultrasonic, eddy current, radiography, thermography) (IMAGAFAI)

Keywords

• Eddy current inspection
• Non-destructive testing
• Tank floor inspection
• Heat exchanger inspection
• Pipe inspection services

Headquarters

HQ city

Schwarmstedt

HQ country

Germany

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. On-Site Eddy Current Inspection Services: Professional inspection services performed at customer facilities including heat exchanger tubes, pipes, tanks, vessels, and welds. Services include inspection execution, data acquisition, signal analysis, and comprehensive documentation reporting.
2. Inspection Equipment Technology: Use of proprietary TMT eddyMax® eddy current data acquisition systems and SLOFEC® inspection technology. Equipment includes various scanner types (pipe scanners, tank floor scanners, weld scanners, reformer tube scanners).

Go-to-market motion1 record

Distribution channels1 record

Marketing channels2 records

Core offering

KontrollTechnik GmbH performs on-site eddy current inspection services for industrial facilities using proprietary SLOFEC® inspection technology combined with TMT eddyMax® computer-integrated data acquisition systems. The company delivers non-destructive testing of heat exchangers, pipes, storage tanks, vessels, and welds to detect corrosion, cracking, and wall thinning in power plants, chemical plants, refineries, and offshore installations. Services are executed by qualified NDT engineers and inspection technicians at customer facilities worldwide, with comprehensive documentation including color C-scan imaging.

Product overview

KontrollTechnik GmbH is an eddy current inspection solutions company founded in 1977, operating as a unified product and services portfolio centered on its proprietary SLOFEC® technology. The core product family includes the SLOFEC® Floorscanner FS300PM.V2 and FS400EM.V2 for tank floor inspection, SLOFEC® Wall Scanner for tank wall inspection, and multiple internal pipe scanner variants (PLM, PLS, PLS-M, PLM-S series) for various pipe diameters and inspection requirements. Supporting inspection methods encompass Conventional Eddy Current, Magnetic Bias Eddy Current, C-MEC® Remote Field Eddy Current, and RotoScan rotating probe techniques for tube inspection applications. The Reformer Pipe Scanner (RPS 360) provides specialized reformer tube inspection with integrated laser measurement. All inspection operations are powered by TMT eddyMax® data acquisition and signal processing systems. Customized inspection solutions including pipe elbow scanners and weld testing systems are developed in partnership with TMT Test Maschinen Technik GmbH.

Differentiator

Problem solved

Functional benefit

Brands

• Kontrolltechnik Gesellschaft für Materialprüfung mbH: Full legal name used in some company communications; website footer displays 'Kontrolltechnik Gesellschaft für Materialprüfung mbH'

Products and services

• On-Site Eddy Current Inspection Services Professional on-site eddy current inspection services performed at customer facilities worldwide, including inspection execution, data acquisition, signal analysis, and comprehensive documentation reporting. Services address heat exchanger tubes, pipes, storage tanks, vessels, and welds for industrial customers.
• SLOFEC® Inspection Technique Proprietary eddy current inspection technique combining eddy current with superimposed DC field magnetization that enables detection of topside and underside corrosion in thin and thick walled plates and pipes, including subsurface defects through coatings up to 10mm thickness with testable wall thickness up to 25mm.
• SLOFEC® FloorScanner FS300PM.V2 Floor scanner for tank floor inspection testing plate thickness up to 14mm without coating and up to 8mm with 4mm coating. Requires minimum space of 130mm under obstacles.
• SLOFEC® FloorScanner FS400EM.V2 Floor scanner for tank floor inspection testing plate thickness up to 25mm without coating and up to 12mm with 10mm coating. Requires minimum space of 300mm under obstacles.
• SLOFEC® Wall Scanner Scanner for tank wall and roof inspection to detect internal corrosion, preventing production downtime and costly repairs.
• SLOFEC® External Pipe Testing Crawler Remote controlled vehicle for external SLOFEC® pipe scanning that reduces the need for scaffolding at difficult access situations.
• SLOFEC® Internal Pipe Scanner Type PLM Drive-through internal pipe scanner for pipe diameter range 10"-30", pipe wall thickness up to 12mm, coating up to 10mm, inspection length up to 150m. Uses crawler or winch propulsion.
• SLOFEC® Internal Pipe Scanner Type PLS Scanner with rotating sensor head for pipe diameter ≥20", pipe wall thickness up to 18mm, inspection length up to 300m. Higher resolution than PLM type with reduced dead zones at butt welds.
• SLOFEC® Internal Pipe Scanner Type PLS-M Scanner for pipe diameter ≥30" with inspection length up to 250m. Designed for pipes where personal access is possible or unit can be pulled by winch. Installation through manholes is possible.
• Internal Pipe Scanner Type PLM-S.MB and PLM-S.RF Drive-through probes for small diameter pipes (1"-10"), pipe wall thickness up to 8mm, inspection length up to 300m. PLM-S.MB uses magnetic bias technique; PLM-S.RF uses remote field technique.
• External Pipe Scanner (SLOFEC®) External pipe scanning system for detection of internal and external corrosion in pipes using SLOFEC® technology for early warning of potential costly incidents.
• Umbilical Pipe Inspection Tools Type PLM and PLS Modular design pipe inspection tools for buried pipework inspection in industrial plants. Adaptable to various on-site situations with bi-directional movement capability. Capable of passing bends down to 1.5xD radius.
• Weld Scanner Eddy current weld testing system that detects surface cracks even under non-conductive coatings up to 6mm thickness. Uses 8-sensor arrays for butt, overlapped, and corner welds covering weld zone and heat affected zone. Detects cracks from 2mm depth and 10mm length.
• Conventional Eddy Current Bobbin Probe Multifrequency eddy current method for inspection of non-ferromagnetic tubes in heat exchangers, condensers, coolers, reactors, heaters, and air conditioning coolers.
• Magnetic Bias Eddy Current Bobbin Probe Magnetic bias eddy current defect detection within ferromagnetic tubes using superimposed DC field magnetization. Sensitive for local defects including pitting corrosion.
• C-MEC® Remote Field Eddy Current Multi-frequency remote field eddy current inspection method for defect detection within ferromagnetic and thick wall non-ferromagnetic tubes. Provides advantages in defect depth determination and detection of uniform tube wall thinning.
• RotoScan RP-Method C-Scan inspection with rotating eddy current probes for defect detection in bore holes, pipes, and tube expanded zones within ferromagnetic and non-ferromagnetic materials.
• Tube Line Probe Array (CRIS Technique) Eddy current testing for detection of stress corrosion cracking in austenitic tube lines in nuclear power plants. Uses 4-8 multi-difference sensors moved on outside of tube to detect stress corrosion cracking at inside of tube.
• Reformer Pipe Scanner (RPS 360) Proprietary OD and ID inspection system for reformer tubes up to 23mm wall thickness. Combines rotating eddy current probe for crack detection with integrated rotating laser for expansion measurement. Provides 360° crack detection coverage and 100% laser ID coverage. Identifies creep strain, bulging, swelling, cracking, and manufacturing flaws.
• TMT eddyMax® Data Acquisition System Computer integrated eddy current data acquisition and signal processing systems used in KontrollTechnik's inspection equipment. Provides high standard signal evaluation reliability with economical efficiency.
• Tank Crawler Remote controlled vehicle system for tank and vessel inspection operations.
• Pipe Elbow Scanner Automated scanner for combined eddy current and ultrasonic crack inspection of pipe elbows, developed with TMT Test Maschinen Technik GmbH for nuclear power plant applications.
• Weldolet Crack Testing System High temperature crack inspection system for weldolets during operation at temperatures of 500°C and higher using rugged sensor guidance in petrochemical plants.
• Eddy Current Component Testing Manual crack inspection with shape-formed sensor guidance for high pressure components, such as those in the food industry.
• Megasus Manipulator Manipulator system for effective inspection of large diameter underground vessels without scaffolding.

Quantifiable outcome

• Detection of cracks from 2mm depth and 10mm length in weld inspection
• +3 more outcomes

Named customers5 records

Segments3 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature8 records

Partnerships

One partnership is on record.

• TMT Test Maschinen Technik GmbHcoreTechnology or IntegrationTMT Test Maschinen Technik GmbH is the technology partner providing the eddyMax® eddy current data acquisition and signal processing systems. KontrollTechnik works together with TMT to design and manufacture special sensors, tools, and manipulators for customized inspection solutions. The partnership enables development of proprietary inspection equipment including pipe scanners, tank floor scanners, and reformer tube inspection systems.

Scale indicators3 records

Recent moves5 records

Expansion highlights4 records

Broad incumbents

• Evident (formerly Olympus Scientific Solutions): Major manufacturer of NDT equipment including eddy current, ultrasonic, and phased array systems used in industrial inspection. Compares to KontrollTechnik's eddyMax®-based equipment offerings as a broader NDT equipment supplier competing for similar industrial customers.
• Intertek: Global TIC provider serving the energy and industrial sectors with inspection, testing, and quality assurance services. Competes with KontrollTechnik in plant integrity and equipment inspection for power and petrochemical clients.
• Bureau Veritas: Global TIC conglomerate providing industrial inspection, asset integrity management, and NDT services to power, oil & gas, and marine clients. Overlaps with KontrollTechnik in heat exchanger, piping, and pressure equipment inspection but at much larger scale.
• SGS SA: Global testing, inspection, and certification (TIC) leader offering industrial NDT and asset integrity services across power, oil & gas, and petrochemical sectors. Competes with KontrollTechnik for large-scale inspection contracts but as part of a much broader service portfolio.
• Zetec Inc. Provider of NDT solutions including eddy current, ultrasonic, and advanced inspection technologies for power generation, aerospace, and oil & gas. Competes with KontrollTechnik in the eddy current segment while offering broader NDT equipment and services.
• Applus+: International TIC group with a dedicated Energy & Industry division delivering NDT, inspection, and asset integrity services globally. Competes with KontrollTechnik in industrial inspection with broader service coverage and substantially larger headcount.

Emerging players

• Rohmann GmbH: German specialist in eddy current testing equipment and services for industrial applications, including crack detection and material testing. Closely comparable to KontrollTechnik in geography (Germany) and technology focus (eddy current NDT), though with a more equipment-focused orientation.

Direct peers

• NDT Global: Specialist pipeline and pipeline integrity inspection provider using advanced NDT technologies including ultrasonic and eddy current techniques. Comparable in being a niche specialist serving oil & gas asset integrity, though with a stronger pipeline focus.
• TMT Test Maschinen Technik GmbH: German technology partner that designs and manufactures the eddyMax® data acquisition systems underpinning all of KontrollTechnik's inspection operations. While TMT is primarily an equipment manufacturer rather than a service provider, it directly co-develops proprietary inspection tools with KontrollTechnik, making it the closest technical comparable.
• Eddy Current Technology (ECT) Inc. US-based specialist in eddy current NDT services and equipment for heat exchanger tubes, condensers, and boiler inspection. Direct competitor in the same niche eddy current inspection market that KontrollTechnik serves.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/kontrolltechnik-gmbh

Compliance4 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles7 records

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 KontrollTechnik GmbH