What Japan Non-Destructive Inspection does

Japan Non-Destructive Inspection Co., Ltd. (日本非破壊検査株式会社, JNDI) is a privately held Japanese corporation founded in April 1956 as Japan's first non-destructive testing (NDT) company. Headquartered in Ōta-ku, Tokyo, the company operates eight regional offices across Japan's principal industrial corridors (Tokyo, Kashima, Chiba, Yokkaichi, Chita, Kurashiki/Mizushima, plus a Technical Center) and employs approximately 225 people as of 2025.

JNDI delivers on-site NDT and measurement services to enterprise customers in the petrochemical, power generation, oil & gas storage, infrastructure/civil engineering, and heavy industry sectors. The service portfolio spans ultrasonic testing (UT), radiographic testing (RT), eddy current testing (ET), magnetic particle testing, penetrant testing, and materials analysis. The company is differentiated by a sizable in-house proprietary technology portfolio — twelve-plus self-developed inspection systems including EASYS-TB (continuous tank bottom thickness measurement), CUI-VIEW II (corrosion-under-insulation detection using Hamamatsu Photonics' photon-counting line sensor), Kan Tan Kun (heat-exchanger tube circumferential crack detection), Mirai (water-immersion ultrasonic tube inspection), ATOM, Rack Through, Spiral-Through, NIPS (radiographic image processing), SUMP (on-site metallography), and complementary 3D scanning, infrared thermography, handheld XRF, and LIBS analyzers. Multiple systems are patents or utility models registered with the Japan Patent Office. Several proprietary technologies carry third-party regulatory certifications, including Hazardous Materials Safety Technology Association recognition (Kanpyo No. 0089) and Nuclear Regulatory Commission Radioactive Isotope Use Permits.

The business runs on an enterprise direct-sales motion through field engineers and technical sales staff embedded in regional offices, with no self-serve or marketplace channels. Revenue is generated through per-project, multi-year inspection contracts plus consulting, certified inspector dispatch, and heat-treatment services. For the fiscal year August 1, 2024 to July 31, 2025, the company reported ¥3.11 billion in sales and ¥409 million in ordinary profit. Operating geography is exclusively Japan; cross-border expansion is not indicated.

Name

Japan Non-Destructive Inspection

Legal name

日本非破壊検査株式会社

Website

https://jndi.com

Company type

Private

Founded year

1956

Operating status

Operating

Headcount range

101–250 employees

Short description

Japan's first non-destructive testing company, established 1956, provides ultrasonic, radiographic, eddy current, and materials analysis inspection services to petrochemical, power, oil & gas, storage terminal, and infrastructure operators across 8 regional offices in Japan.

Ownership category

akta.pro rank

Product category

Industrial Non-Destructive Testing (NDT) & Inspection Services

NAICS

Testing Laboratories and Services (541380)

SIC

Services-Testing Laboratories (8734)

akta.pro primary industry

Non-Destructive Testing (NDT) & Inspection Services (IMAIACAI)

akta.pro secondary industries

Non-Destructive Testing (NDT) & Advanced Inspection (Phased Array, TOFD, Guided Wave) (EUAEAKAF), Pressure Equipment, Boilers & Heat Exchanger Inspection (EUAEAHAB), Storage Tank Inspection (AST/UST) (EUAEAHAC), Structural & Civil Inspection (Steel, Concrete, Foundations) (EUAEAHAI)

Keywords

• Non-destructive testing services
• Industrial inspection services
• Ultrasonic flaw detection
• Radiographic testing services
• Corrosion inspection services

Headquarters

HQ city

Tokyo

HQ country

Japan

HQ region

Asia

Offices8 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Non-destructive Testing and Measurement Services: Core revenue stream from providing on-site non-destructive inspection services for industrial infrastructure including petrochemical plants, storage tanks, power generation facilities, and construction/civil engineering structures. Services include ultrasonic testing, radiographic testing, eddy current testing, magnetic particle testing, penetrant testing, and materials analysis. Billed on a project/contract basis.
2. Heat Treatment Services: Heat treatment services including stress relief, dehydrogenation, preheating, and post-heating.
3. Inspector Dispatch and Consulting: Provision of certified inspection personnel to client sites and technical consulting on inspection planning.
4. Technology Development: Development and deployment of proprietary inspection technologies and systems, including EASYS-TB, CUI-VIEW II, and other specialized equipment.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels6 records

Core offering

Japan Non-Destructive Inspection provides on-site non-destructive testing (NDT) and measurement services for industrial plants, petrochemical facilities, power generation stations, oil storage terminals, and civil engineering/construction structures. Core services span surface flaw inspection, internal flaw inspection, materials evaluation, and heat exchanger tube inspection using ultrasonic testing (UT), radiographic testing (RT), eddy current testing (ET), magnetic particle testing (MT), penetrant testing (PT), and materials analysis. The company supports services with proprietary patented inspection systems (EASYS-TB, CUI-VIEW II, Kan Tan Kun, Mirai, ATOM, Rack Through, NIPS) and licenses operator certifications from the Japan Welding Association.

Product overview

Japan Non-Destructive Inspection (JNDI) offers a comprehensive portfolio of non-destructive testing products and services for industrial infrastructure inspection. The portfolio consists of three major product groups: (1) Radiographic Testing products including CUI-VIEW Ⅱ for corrosion-under-inspection detection, FCR digital radiography systems, and NIPS image processing software; (2) Ultrasonic Testing products featuring proprietary inspection systems such as EASYS-TB for tank bottom measurement, M i r a i for tube corrosion mapping, ATOM for external tube inspection, Kan-tankun for circumferential crack detection, Luck/Rack-Through for pipe support areas, and Spiral-Through for large-diameter pipes, plus Phased Array UT technology; and (3) Eddy Current Testing products including Universal Joint Bellows inspection and automated ET systems. The Material Testing product group includes SUMP for microstructure analysis, LIBS Z-200 C+ for carbon analysis, Vanta Core and Innov-X portable XRF analyzers, and SEM/EDS instrumentation. Additional technologies include 3D scanners, infrared thermography, neutron moisture meters, and scale thickness measurement. JNDI also provides workforce dispatch and consulting services as part of its comprehensive inspection solutions.

Differentiator

Problem solved

Functional benefit

Products and services

• Non-destructive Testing (NDT) Inspection Services Comprehensive on-site non-destructive testing services for industrial plants, petrochemical facilities, power generation stations, oil storage terminals, and construction/civil engineering structures. Spans surface flaw inspection, internal flaw inspection, materials evaluation, and heat exchanger tube inspection using ultrasonic testing, radiographic testing, eddy current testing, magnetic particle testing, penetrant testing, and materials analysis. Approximately 1,000 inspections performed annually for enterprise clients.
• Heat Treatment Services Industrial heat treatment services for plant maintenance and construction including stress relief, dehydrogenation, preheating, and post-heating for welds and structural components.
• Certified Inspector Dispatch and Technical Consulting Provision of certified inspection personnel (CIW Class A) dispatched to client sites under General Worker Dispatch Business Permit No. 派13-301347, and technical consulting on inspection planning for petrochemical plants, power generation facilities, and infrastructure operators.
• CUI-VIEW II Pipe Corrosion Inspection System Energy-dispersive X-ray line sensor-based pipe corrosion inspection service for detecting corrosion under insulation (CUI). Uses Hamamatsu Photonics photon-counting technology to detect 2-3mm corrosion depths in 2-inch to 30-inch pipes without requiring insulation removal. For petrochemical and power plant pipe integrity programs.
• EASYS-TB Continuous Tank Bottom Plate Thickness Measurement Service Continuous ultrasonic tank bottom plate thickness measurement service using 20 probe modules with 400mm effective scanning width at up to 500mm/sec. Hazardo

Quantifiable outcome

• 39 tanks inspected with 3 EASYS-TB units in the Kanto region
• +1 more outcomes

Named customers5 records

Segments5 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature12 records

Partnerships

Seven partnerships are on record, tiered minor and core.

• IDC (International Diagnostic Consultancy or equivalent)minorStrategic or Co-development Partner · 1 May 1988Entered into a business partnership with IDC for the magnetic tube inspection system 'FRIEND' (磁性体チューブ検査システム) in May 1988. IDC provided technical collaboration for the development and deployment of the FRIEND system.
• Fujifilm Corporation (富士フイルム株式会社)coreTechnology or IntegrationAdopted Fujifilm's FCR (Fuji Computed Radiography) digital radiographic imaging systems (DynamIx HR2). Represents a key technology procurement partnership for digital radiographic testing capabilities.
• Hamamatsu Photonics K.K. (浜松ホトニクス株式会社)coreTechnology or IntegrationCUI-VIEW II system uses Hamamatsu Photonics' energy-differentiating radiation line sensor (C13247). Photon-counting technology enables high-sensitivity, low-noise detection of pipe corrosion under insulation. JNDI's inspection data is referenced in Hamamatsu's product documentation.
• KEYENCE Corporation (株式会社キーエンス)coreTechnology or IntegrationOperates KEYENCE VE-8800 Scanning Electron Microscope (SEM) for fracture surface observation and microstructure analysis in their materials testing services.
• Oxford Instruments (オックスフォード・インストゥルメンツ)coreTechnology or IntegrationOperates Oxford INCA Energy Energy Dispersive X-ray Spectroscopy (EDS) system for qualitative analysis, quantitative analysis, line scan, and element mapping, attached to the SEM.
• Tokyo Electric Power Corporation (東京大学原子力工学部等)minorStrategic or Co-development PartnerCollaborative development with Tokyo University Department of Nuclear Engineering led to the development of the fully automated eddy current data processing system using local phase method in October 1992.
• Kurashiki City Board of Education (倉敷市)minorOthersParticipated in Kurashiki City's Career Education Promotion Program (Enterprise Learning Program), providing educational workshops on non-destructive inspection to junior high school students.

Scale indicators9 records

Recent moves13 records

Expansion highlights6 records

Others

• Shimadzu Corporation: Japanese analytical and measurement instrument manufacturer. Overlaps with JNDI's materials analysis business (XRF, spectroscopy) as an equipment/instrument supplier and indirect player in materials testing services.
• Olympus Corporation (Industrial Solutions): Major Japanese manufacturer of NDT equipment including ultrasonic flaw detectors and eddy current instruments. Supplier-adjacent rather than direct competitor—provides some equipment JNDI uses in its services.

Direct peers

• Mitsui Zosen Inspection Engineering (MZI): Major Japanese NDT and inspection engineering firm serving petrochemical, power, and shipbuilding. Similar business model with on-site NDT services and proprietary technologies for industrial plant inspection.
• JFE Techno-Research Corporation: Japanese materials testing and NDT firm (JFE Group subsidiary) offering inspection, failure analysis, and materials characterization for industrial clients. Directly competes with JNDI in steel, manufacturing, and infrastructure segments.
• Kansai Non-Destructive Inspection Co., Ltd. Japanese NDT services firm headquartered in Osaka serving Kansai industrial base with ultrasonic, radiographic, and eddy current testing—directly overlapping JNDI's service portfolio and verticals.
• Toyo Inspection Industries Co., Ltd. Domestic Japanese NDT service provider focused on plant and infrastructure inspection. Competes directly for the same petrochemical, power, and construction inspection contracts across Japan.

Broad incumbents

• Bureau Veritas Japan: Global TIC major with established Japan presence. Competes on industrial asset integrity and NDT services, particularly in oil & gas, power, and infrastructure—overlapping JNDI verticals with broader portfolio.
• Intertek Japan: Global TIC incumbent with Japan operations providing industrial inspection, materials testing, and asset integrity services. Direct overlap on petrochemical and power plant NDT, with greater international delivery capability.
• SGS Japan: Global testing, inspection, and certification (TIC) giant operating across Japan. Much larger portfolio but competes on industrial NDT services with vastly greater scale and geographic reach.

Regional players

• Nippon Kaiji Kentei Kyokai (ClassNK): Japanese classification society and inspection body primarily serving maritime and offshore. Comparable NDT and certification work but for ships/offshore platforms rather than onshore petrochemical—indirect peer with overlap in regulatory inspection expertise.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks1 record

Key highlights7 records

Customer concentration

Compliance4 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 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 Japan Non-Destructive Inspection