Dilenza provides independent industrial inspection in Thailand for manufacturers, fabrication yards, shipyards, equipment suppliers and industrial project sites.
We match welding, coating and industrial inspectors according to your equipment, required qualifications, applicable project requirements, supplier location and schedule.
From one critical fabrication milestone to recurring or resident technical presence, Dilenza supports industrial projects throughout Thailand.
ITP · Specification · PO · Drawings accepted
AWS CWI · CSWIP · IWI · AMPP · FROSIO
Single Visit · Recurring · Resident · Multi-Site
Industrial Inspection Coverage Across Thailand
Fabrication Yards · Shipyards · Equipment Suppliers · Project Sites
Highlighted areas represent key industrial clusters, not Dilenza offices. Inspection requirements can be reviewed throughout Thailand.
Qualified welding inspection profiles for offshore modules, pressure vessels, process piping, marine structures, structural steel and industrial equipment.
Profiles can be matched according to the materials, welding processes, equipment, applicable requirements and required qualification.
AWS CWI · CSWIP · IWI
For offshore, pressure-equipment or other specialized fabrication, relevant equipment and code experience can also form part of inspector selection.
Protective coating inspection for offshore structures, tanks, marine assets, structural steel, piping and fabricated equipment.
Profiles can be selected according to the asset, coating system, substrate, exposure environment and project specification.
AMPP · FROSIO · BGAS-CSWIP
Independent technical inspection while equipment is being manufactured, fabricated, assembled or tested at a Thai supplier.
Inspection can follow:
ITP · Hold Points · Witness Points · Manufacturing Milestones · Testing · FAT · Final Verification
Shop and supplier inspection can cover source inspection, welding, coatings, dimensional checks, documentation review and witness testing at Thai manufacturers and fabrication facilities.
Long-term technical presence for projects requiring frequent or continuous inspection over several weeks, months or longer.
Particularly relevant to:
Offshore Fabrication · Process Equipment · Pressure Systems · Shipbuilding · Heavy Fabrication · Welding & Coating Programs
Thailand has one of Southeast Asia's most diversified industrial manufacturing bases.
The country combines petrochemicals, fabricated metals, machinery, automotive manufacturing, marine engineering, pressure equipment and large offshore fabrication.
Its most important industrial corridor for Dilenza is the Eastern Economic Corridor, covering Rayong, Chonburi and Chachoengsao. The current EEC development framework contains dozens of industrial estates, with targeted activities including automotive, automation, advanced manufacturing, chemicals, petrochemicals and energy-related industries.
Thailand also manufactures equipment directly for major international energy projects. Fabrication yards on the eastern seaboard have produced topsides and modules for projects in Europe, Brazil and other global markets.
For international buyers, EPC contractors and project owners, however, finding an inspector near the supplier is only one part of the requirement.
The technical profile may also need the correct:
Dilenza can support industrial inspection services in Thailand at:
Inspection can cover one defined manufacturing stage or continue throughout a longer fabrication, manufacturing or project program.
Inspection & Test Plan · Technical Specification · Purchase Order · Drawings · Client Procedures · Applicable Codes & Standards
The agreed scope follows controlled project documentation.
The supplier defines the location. The equipment defines the expertise.
Topsides · Process Modules · Offshore Platforms · Converter Platforms · Structural Modules
Thailand has established capabilities for large-scale offshore module fabrication. Aibel's yards in Laem Chabang and Map Ta Phut have manufactured modules for FPSOs, offshore platforms and onshore facilities, as well as large converter platforms for offshore wind projects. The company's Thai yards have delivered structures for projects in markets including Norway, the UK and Brazil.
Inspection can support:
Material Verification · Structural Welding · Piping · Dimensional Control · NDT Witnessing · Mechanical Completion · Protective Coatings
Pressure Vessels · Reactors · Heat Exchangers · LNG Tanks · LPG Vessels · Storage Tanks
Thailand has fabrication capability for large and technically complex pressure equipment. At Laem Chabang, Unithai manufactures pressure vessels and tanks for sectors including petrochemicals, oil and gas and renewable energy. Its capabilities include ASME pressure vessels, cryogenic tanks, heat exchangers and large fabricated equipment.
Inspection can support:
Materials · Traceability · Welding · NDT · Dimensional Verification · PWHT · Hydrostatic Testing · Documentation
Process Modules · Piping · Skids · Heat Exchangers · Tanks · Mechanical Packages
Rayong is one of Thailand's most important process-industry locations. Map Ta Phut combines a large industrial estate, petrochemical production and a dedicated industrial port. The adjacent WHA Eastern Industrial Estate specifically targets chemical, petrochemical, steel and cogeneration power activities.
Inspection can support:
Material Verification · Welding · Process Piping · Dimensions · NDT Witnessing · Pressure Testing · Documentation
Vessels · Marine Structures · Piping · Mechanical Equipment · Ship Repairs
Thailand also has significant marine engineering and shipyard capability. Unithai operates a major shipyard at Laem Chabang, supporting shipbuilding, ship repair, modification, offshore fabrication and marine engineering.
Inspection can support:
Structural Welding · Hull Fabrication · Marine Piping · Machinery · Repair Verification · Protective Coatings
Steel Structures · Modules · Frames · Platforms · Pipe Racks · Heavy Welded Assemblies
Thailand's fabrication sector supports energy, petrochemical, marine and industrial projects. Large eastern-seaboard facilities produce topside modules, jackets, subsea structures, skids, chemical-plant structures, power-plant structures and wind-energy components. Unithai, for example, lists annual fabrication throughput in the tens of thousands of tonnes for offshore and onshore structures.
Inspection can support:
Material Identification · Fit-Up · Welding · Dimensional Verification · NDT Witnessing · Coating · Final Verification
Industrial Machinery · Mechanical Assemblies · Production Equipment · Pumps · Engineered Systems
Machinery remains a significant part of Thailand's manufacturing economy. Current national industrial statistics track substantial activity in machinery, fabricated metal products, electrical equipment and transportation equipment.
Inspection can be arranged during:
Manufacturing · Mechanical Assembly · Dimensional Verification · Functional Testing · FAT · Final Inspection
Inspection requirements can be reviewed throughout Thailand according to the supplier location, equipment and technical scope.
Highlighted areas represent key industrial clusters, not Dilenza offices. Inspection requirements can be reviewed throughout Thailand.
Map Ta Phut · Ban Chang · Pluak Daeng · Huai Pong
Petrochemicals · Offshore Fabrication · Process Equipment · Heavy Industry
Map Ta Phut is one of Thailand's most important heavy-industrial areas, combining petrochemical production, steel, power generation, industrial port infrastructure and large equipment fabrication.
Aibel also operates a major assembly yard at Map Ta Phut, with prefabrication capacity nearby in Huai Pong. Its Thai operations support large offshore oil and gas and offshore-wind modules.
Inspection requirements can involve:
Dilenza can support one fabrication milestone, recurring surveillance or resident technical presence.
Laem Chabang · Si Racha · Chonburi
Offshore Fabrication · Shipbuilding · Pressure Equipment · Machinery
Aibel operates a major construction and assembly yard within Laem Chabang Port, while Unithai provides shipbuilding, offshore fabrication, pressure-vessel manufacturing and heavy engineering from the same broader industrial area.
Inspection can support:
Topsides · Modules · Vessels · Pressure Equipment · Tanks · Piping · Heavy Fabrication
For larger projects, several technical disciplines may need to be coordinated across different manufacturing stages.
Pluak Daeng · Rayong–Chonburi Industrial Corridor
Automotive · Machinery · Automation · Heavy Manufacturing
The Rayong–Chonburi industrial corridor extends well beyond petrochemicals and offshore fabrication.
Current EEC industrial zones around the Eastern Seaboard specifically target next-generation automotive, intelligent electronics, automation and robotics, alongside established machinery and metalworking activity.
For Dilenza, the strongest opportunities remain industrial equipment and fabricated systems rather than general consumer-product inspection.
Inspection can support:
Machinery · Production Equipment · Fabricated Structures · Mechanical Assemblies · Supplier Testing · FAT
Chachoengsao · Bang Pakong · Eastern Economic Corridor
Manufacturing · Automotive · Machinery · Engineered Equipment
Chachoengsao forms the third province of Thailand's Eastern Economic Corridor together with Chonburi and Rayong.
The region continues to attract manufacturing and transportation-equipment investment and benefits from close access to Bangkok, Laem Chabang and the wider eastern industrial supply chain.
Inspection requirements can involve:
Industrial Machinery · Fabricated Components · Mechanical Equipment · Production Systems · Vendor Inspection
Bangkok · Samut Prakan · Surrounding Industrial Areas
Engineering · Machinery · Fabricated Equipment · Industrial Manufacturing
Bangkok and surrounding provinces remain important for engineering offices, industrial suppliers and manufacturing facilities.
For international projects, these locations may contain specialist suppliers producing machinery, mechanical systems, fabricated components, industrial equipment and project packages.
Dilenza can support defined inspection points, FAT, documentation review and manufacturing surveillance according to the technical scope.
Ayutthaya · Saraburi · Pathum Thani
Machinery · Manufacturing · Industrial Equipment
Ayutthaya has an established industrial-estate ecosystem north of Bangkok.
The Hi-Tech Industrial Estate alone covers more than 2,300 rai and forms part of a wider manufacturing corridor connected to Bangkok and central Thailand.
Inspection can support:
Machinery · Mechanical Assemblies · Fabricated Components · Industrial Equipment · Testing · FAT
Dilenza can also review requirements in Chachoengsao, Prachinburi, Saraburi, Samut Sakhon, Pathum Thani, Nakhon Ratchasima, Songkhla and other Thai manufacturing locations.
Coverage depends on supplier location, equipment, technical scope, required qualification, project schedule and suitable inspector availability.
Inspector selection starts with the technical requirement.
Inspector selection should be based on the project requirements, including the applicable code, equipment type, welding processes, qualification level and relevant fabrication experience. Two inspectors can hold similar qualifications while having very different experience with offshore modules, pressure vessels, process piping, ship structures or heavy machinery.
Step 01
Step 02
Step 03
Relevant inspector CVs and qualifications can be submitted for technical assessment.
Step 04
The confirmed inspector attends according to the agreed scope and schedule.
Depending on the assignment, inspector profiles may include:
Welding
Protective Coatings
Certification alone does not determine technical suitability.
Profiles can also be matched according to:
Equipment · Materials · Welding Processes · Coating Systems · Offshore Experience · Process-Industry Experience · Marine Experience · Applicable Standards · Assignment Duration
Depending on controlled project documentation:
For pressure and offshore equipment, projects may also define specific requirements under ASME, API or client/EPC specifications. The applicable code, edition, acceptance criteria and inspector responsibilities should always come from the project's controlled documentation.
Certain industrial equipment and installations in Thailand may be subject to regulatory, certification or conformity requirements separate from the buyer's independent inspection scope.
Dilenza's ordinary vendor and project inspection services should not be treated as a substitute for statutory inspection, authorized certification or another legally required conformity-assessment function.
Where such involvement is required, it should be identified separately from the independent inspection scope.
Independent vendor inspection in Thailand can provide technical oversight while equipment remains at the manufacturer or fabrication yard.
This is particularly valuable for large modules, pressure vessels, piping and other fabricated equipment because important characteristics can become inaccessible after assembly, coating or shipment.
Documentation · Materials · Fabrication · Hold & Witness Points · Testing / FAT · Final Verification
Technical documentation and project-defined acceptance requirements.
Material identification and traceability.
Manufacturing and fabrication progress, welding activities.
Dimensional requirements, NDT status and mechanical assembly.
Pressure and functional testing according to the ITP.
Surface preparation, protective coatings and final release.
For international EPC contractors and buyers sourcing engineered equipment from Thailand, this creates independent technical visibility while corrective action is still practical at the supplier.
Diligence before the equipment leaves the supplier.
Inspection frequency can range from:
One Critical Attendance · Recurring Manufacturing Surveillance · Resident Presence
ONE VISIT · RECURRING · RESIDENT · SHUTDOWN · MULTI-SITE
One manufacturing milestone, hold point, witness point, FAT, test or final verification.
Repeated technical attendance throughout fabrication or manufacturing.
Frequent or continuous technical presence for longer manufacturing and fabrication programs.
Additional welding, coating or technical inspection resources for refinery, petrochemical, power or other planned industrial maintenance projects. Shutdown support is especially relevant around Map Ta Phut and Thailand's eastern process-industry corridor.
Inspection coordinated across several Thai suppliers or across an international project supply chain. This can be particularly valuable when steel structures, piping, pressure equipment and mechanical packages are manufactured at different suppliers within the Eastern Economic Corridor.
Different suppliers. Different locations. One project requirement.
Yes. Inspection requirements can be reviewed throughout Thailand according to supplier location, equipment, technical scope, required qualifications, schedule and suitable inspector availability.
Yes. Welding inspection requirements can be reviewed according to the equipment, materials, welding processes, applicable standards and required qualifications.
Yes. Protective coating inspection can support offshore structures, vessels, process equipment, piping, tanks and fabricated steel.
Yes. Vendor inspection can support ITP milestones, hold points, witness points, manufacturing surveillance, testing, FAT and final verification.
Yes. Inspection can support topsides, process modules, converter platforms, offshore structures and associated piping and fabricated equipment according to the project scope.
Yes. Rayong is particularly relevant to petrochemicals, offshore fabrication, process equipment, piping and heavy industrial manufacturing.
Yes. Map Ta Phut is one of Thailand's strongest locations for petrochemical, process, pressure-equipment and offshore-fabrication projects.
Yes. Laem Chabang is particularly relevant to offshore module fabrication, shipbuilding, pressure vessels, tanks, piping and marine engineering.
Yes. Inspection requirements involving vessel structures, structural welding, marine piping, machinery, repairs and protective coatings can be reviewed.
Yes. Inspection can support pressure vessels, reactors, heat exchangers, tanks and other pressure equipment according to controlled project documentation. Any separate statutory or certification requirement must be identified independently.
Yes. Where ASME requirements apply, relevant code and equipment experience can form part of inspector selection. The applicable code section, edition and inspector responsibilities should be confirmed from controlled project documentation.
Yes. Inspection can support material verification, fit-up, welding, NDT witnessing, dimensional checks, pressure testing and documentation according to the agreed scope.
Yes. Chonburi has significant offshore, marine, machinery, automotive and industrial-manufacturing activity.
Yes. Inspection can support machinery and engineered equipment during manufacturing, assembly, dimensional verification, testing and FAT.
Yes. Machinery, fabricated-equipment, engineering and supplier-inspection requirements can be reviewed throughout the Bangkok metropolitan industrial area.
Yes. Requirements involving machinery, manufactured components and industrial equipment can be reviewed throughout Ayutthaya's industrial areas.
Yes. Resident inspection can support projects requiring frequent or continuous technical presence over several weeks, months or longer.
Yes. Technical inspection resources can be reviewed for petrochemical, refinery, power and other industrial shutdowns according to the required disciplines and schedule.
Yes. Single visits can support one manufacturing milestone, witness point, FAT, pressure test, repair verification or final inspection.
Yes. Required welding qualifications can form part of profile matching together with relevant equipment and project experience.
Yes. Coating profiles can be reviewed according to the qualification, coating system, service environment and relevant project experience.
Yes. Relevant inspector CVs and qualifications can be submitted for technical review before assignment confirmation.
Tell us what needs to be inspected:
Upload documents: ITP · Specification · PO · Drawings
Not sure which inspector qualification or technical requirement applies? Send us the equipment and project scope and we can review the requirement.
Independent technical inspection for fabrication yards, shipyards, equipment manufacturers and industrial projects throughout Thailand.
