WPS
Welding Procedure Specification
The inspector can verify that the applicable approved procedure is available and corresponds to the production welding activity being inspected.
Welding Inspection · Turkey
Welding Inspection Services in Turkey
Dilenza provides welding inspection services in Turkey for shipbuilding, pressure equipment, piping, structural steel, industrial machinery and other welded fabrication.
We match welding inspectors according to the equipment, materials, welding processes, applicable standards, required qualification, supplier location and inspection responsibilities.
From a one-day fabrication hold point to recurring welding surveillance or long-term technical presence, Dilenza can identify inspector profiles suited to the actual project requirement.
ITP · WPS · Specification · PO · Drawings accepted
Qualifications
AWS CWI · CSWIP 3.1 · CSWIP 3.2 · IWI · Relevant NDT Qualifications
Attendance
Single Visit · Recurring · Resident · Multi-Site
Welding inspection support
- WPS
- Fit-Up
- Welding
- NDT
- Repairs
- Acceptance
Welding quality control
Independent Welding Inspection During Fabrication
Welding quality is created throughout fabrication—not at the final inspection.
Joint preparation, fit-up, welding procedures, welder qualifications, production parameters, intermediate conditions, NDT and repairs can all affect the final result.
Dilenza provides independent welding inspection at Turkish manufacturers, fabrication facilities and shipyards according to the client's controlled project documentation and defined inspection responsibilities.
Depending on the scope, inspection may support:
- Welding Documentation
- Material Traceability
- Joint Preparation
- Fit-Up
- Production Welding
- Visual Inspection
- NDT Witnessing
- Weld Repairs
- Final Verification
The objective is not simply to provide someone holding a welding certificate. The inspector should also understand the equipment, material, fabrication method and project requirements involved.
The qualification matters. Relevant fabrication experience matters just as much.
Welding inspection scope
What Can a Welding Inspector Verify?
The exact responsibilities should be defined by the client's ITP, specification, drawings and applicable standards. Inspection can take place before, during and after production welding.
- Before welding
Documentation & Fabrication Preparation
Depending on the agreed scope, the welding inspector may verify:
- Approved fabrication drawings
- Welding Procedure Specifications
- Procedure qualification records
- Welder or welding-operator qualifications
- Material identification
- Material certificates
- Traceability
- Welding consumables
- Joint configuration
- Bevel preparation
- Fit-up
- Root gap
- Alignment
- Tack welds
- Backing arrangements where applicable
- Preheat requirements
- Welding equipment status
- Environmental conditions where relevant
Identifying a deviation at this stage can prevent incorrect welding from progressing into a more costly repair.
- During welding
Production Welding Surveillance
Independent welding surveillance may include verification of:
- Correct WPS use
- Welder identification
- Welding process
- Welding consumables
- Preheat temperature
- Interpass temperature
- Joint cleanliness
- Welding sequence
- Welding technique
- Distortion control
- Back gouging where applicable
- Intermediate weld condition
- Weld identification
- Fabrication traceability
- Project-defined workmanship requirements
Recurring surveillance can be useful where fabrication continues over several production shifts, days or weeks.
- After welding
Visual Weld Inspection & Acceptance
Post-weld inspection can include:
- Weld appearance
- Weld profile
- Weld dimensions
- Surface condition
- Cracks
- Undercut
- Overlap
- Arc strikes
- Misalignment
- Fillet-weld dimensions
- Weld identification
- Relevant dimensional checks
- NDT status
- Repair status
- Documentation
- Project-defined acceptance criteria
Acceptance should always be based on the specified project requirements and applicable acceptance criteria.
NDT & repair control
NDT Witnessing and Weld Repair Follow-Up
Where required by the ITP, welding inspection can interface with project-defined non-destructive testing. Inspection requirements may involve:
- VT
- PT
- MT
- UT
- RT
- PAUT
- TOFD
The welding inspector may be responsible for witnessing defined activities, reviewing examination status or verifying that required examinations have been completed according to the agreed scope.
Where unacceptable indications are identified, repair follow-up can include:
- Defect Identification
- Repair Preparation
- Approved Repair Method
- Re-Welding
- Re-Examination
- Close-Out
NDT execution must be performed by personnel holding the qualifications required by the controlled project documentation.
Welding documentation
WPS, PQR & Welder Qualification Verification
A compliant weld begins with the correct welding documentation.
Depending on the agreed scope, Dilenza welding inspectors can verify project-defined documentation before or during fabrication.
PQR / WPQR
Procedure Qualification Record
Where included in the inspection scope, procedure qualification documentation can be checked against the applicable requirements and production WPS.
WPQ
Welder Performance Qualification
Welder identification and qualification can be checked against the production weld and project-defined requirements.
Depending on the project, inspection can also verify traceability between:
- Welder
- Weld Number
- Drawing
- WPS
- Material
- NDT Status
- Repair Status
Documentation must correspond to the weld being produced—not simply exist in the quality file.
Inspector qualifications
AWS CWI, CSWIP & IWI Welding Inspectors in Turkey
The required inspector qualification should come from the client, project specification, applicable code or contractual documentation. Depending on the assignment, Dilenza can review welding inspector profiles holding qualifications such as:
AWS Certified Welding Inspector – CWI
Profiles can be considered where AWS CWI certification is specifically required by the project.
CSWIP 3.1 Welding Inspector · CSWIP 3.2 Senior Welding Inspector
Relevant to many international fabrication, marine, energy and EPC projects.
International Welding Inspector
IWI-qualified profiles can be considered according to the project's qualification requirements.
NDT Qualifications
Where appropriate, welding inspectors may also hold relevant qualifications or experience involving VT, PT, MT, UT and other project-specified NDT methods.
Certification alone does not determine technical suitability. Inspector matching can also consider:
- Equipment Experience
- Materials
- Welding Processes
- Industry
- Applicable Standards
- Fabrication Complexity
- Inspection Responsibilities
Project-specific matching
Match the Inspector to the Welded Equipment
A CSWIP 3.1 or AWS CWI certificate does not make every inspector suitable for every welding assignment.
A shipyard inspector may have strong experience with large structural sections and marine fabrication. A pressure-equipment inspector may instead have deeper experience with vessels, process piping, alloy materials and code-controlled fabrication. A railway welding program can introduce another set of equipment and standard requirements.
Dilenza therefore reviews the application before proposing profiles.
01 — You send
You Send
Supplier Location · Equipment · Material · Welding Process · ITP · Standards · Qualification · Dates
02 — We review
We Review
We identify the relevant qualification, equipment experience, material experience, welding experience and project responsibilities.
03 — We match
We Match
Profiles can be considered according to certification, relevant project experience, location, availability and assignment duration.
04 — You review
You Review
Relevant inspector CVs and qualifications can be submitted for technical assessment.
05 — Inspection
Inspection
The confirmed welding inspector attends according to the agreed scope and schedule.
Equipment
Welded Equipment We Support in Turkey
Shipbuilding & Marine Fabrication
Vessel Structures · Hull Sections · Ship Blocks · Marine Piping · Deck Structures · Marine Equipment
Turkey has major shipbuilding and vessel-repair activity concentrated particularly around Tuzla and Yalova, making marine fabrication one of the strongest welding-specific applications for the country. Welding inspection can support:
- Plate Preparation
- Fit-Up
- Structural Welding
- Welder Qualification
- NDT
- Repairs
- Dimensional Control
- Welding Documentation
Marine or shipyard experience can form an important part of inspector selection.
Pressure Vessels & Process Equipment
Pressure Vessels · Heat Exchangers · Columns · Boilers · Tanks · Process Equipment
Inspection can support critical fabrication stages involving:
- Material Traceability
- Joint Preparation
- Fit-Up
- WPS Verification
- Production Welding
- NDT
- Weld Repairs
- Pressure-Test Preparation
The required inspector profile should reflect the equipment, material and applicable pressure-equipment requirements.
Piping & Skids
Process Piping · Pipe Spools · Manifolds · Skids · Fabricated Piping Assemblies
Welding inspection may support:
- Material Identification
- Fit-Up
- Root Welding
- Welder Identification
- Production Welding
- NDT Status
- Weld Mapping
- Repair Follow-Up
Recurring inspection can be arranged where spool fabrication extends across several manufacturing stages.
Structural Steel & Heavy Fabrication
Steel Structures · Frames · Platforms · Modules · Pipe Racks · Heavy Welded Assemblies
Welding inspection can support:
- Material Verification
- Joint Preparation
- Fit-Up
- Welding
- Visual Inspection
- NDT
- Weld Repairs
- Fabrication Dimensions
Machinery & Industrial Equipment
Industrial Machinery · Welded Frames · Heavy Equipment · Mechanical Assemblies · Fabricated Components
Industrial machinery frequently combines welded structures with machined or mechanically assembled components. Welding inspectors can focus specifically on the welded fabrication while other technical disciplines are introduced where required.
Railway & Transportation Fabrication
Rail Vehicles · Bogie Structures · Welded Frames · Transportation Equipment · Fabricated Assemblies
Turkey has established manufacturing activity in railway and transportation equipment. Where railway welding forms part of the project, inspector selection can consider experience with the relevant fabrication processes and project-defined railway welding requirements. The applicable standard and inspector responsibility should always be confirmed from the controlled documentation.
Energy & Industrial Projects
Power Equipment · Energy Structures · Mechanical Packages · Fabricated Project Equipment
Welding inspection can support conventional and renewable-energy equipment according to the specific manufacturing scope. Profile selection should follow the actual equipment rather than relying only on general energy-sector experience.
Materials & processes
Welding Experience Matched to Your Fabrication
Inspector experience may need to reflect both the material and welding processes being used.
Depending on the project, relevant material experience can include:
- Carbon Steel
- Low-Alloy Steel
- Stainless Steel
- Duplex / Super Duplex
- Aluminium
- Other Project-Specified Materials
Relevant welding processes can include:
- SMAW
- GTAW / TIG
- GMAW / MIG-MAG
- FCAW
- SAW
- Mechanized or Automated Welding
Not every inspector needs experience with every material or process. The objective is to select a profile aligned with the actual manufacturing requirement.
Standards
Welding Standards & Project Requirements
Turkish manufacturers supply welded products for domestic and international projects operating under different technical codes and client requirements.
The applicable welding standard therefore depends on the equipment, destination, purchaser and controlled project documentation.
ISO 3834 · ISO 5817 · ISO 9606 · ISO 15614 · ISO 17637 · EN 1090 · Other EN / ISO Requirements
Depending on the project.
ASME Section IX · ASME Section VIII · ASME B31 Requirements
For applicable pressure-equipment and piping projects.
AWS D1.1 · Other Applicable AWS Requirements
Depending on the fabricated equipment.
Applicable API Requirements
API requirements may apply to certain oil, gas, pipeline or industrial equipment projects.
EN 15085 Requirements
Where railway fabrication is involved, project documentation may reference applicable EN 15085 requirements.
Classification & Vessel-Specific Requirements
Shipbuilding projects may also involve classification society requirements and vessel-specific specifications.
The correct standard, edition, quality level, acceptance criteria and inspector responsibility must always be taken from the controlled project documentation.
Do not select a welding standard simply because fabrication occurs in Turkey.
Explore Standards & CodesTurkey welding coverage
Welding Inspection Across Turkey's Fabrication Regions
Welding inspection requirements can be reviewed throughout Turkey according to the supplier location and required technical profile.
Tuzla · Istanbul
Shipbuilding · Vessel Repair · Marine Equipment · Heavy Fabrication
Tuzla is one of Turkey's most established shipbuilding and ship-repair environments. Welding requirements can involve hull structures, vessel blocks, marine piping, repairs, steel fabrication and mechanical structures. Shipbuilding experience can therefore be an important criterion when selecting welding inspectors for suppliers in this region.
Yalova · Altınova
Shipbuilding · Marine Fabrication · Vessel Construction · Heavy Steel
Yalova's Altınova shipyard area is another major marine fabrication location. Inspection can support new-build and repair activities involving structural welding, marine fabrication, NDT, repairs, weld documentation and heavy steel assemblies.
Kocaeli · Gebze · İzmit
Pressure Equipment · Process Industry · Machinery · Steel Fabrication
The wider Kocaeli industrial area is particularly relevant to process equipment, mechanical manufacturing, pressure systems and heavy industrial fabrication. Welding inspection can support pressure vessels, piping, tanks, skids, machinery and structural steel.
Bursa
Machinery · Automotive · Industrial Equipment · Fabrication
Bursa has a broad manufacturing base involving machinery, transportation equipment and fabricated industrial products. Welding inspection may be required for machinery frames, fabricated assemblies, transportation equipment and structural components.
Ankara
Industrial Equipment · Engineering · Structural Fabrication · Energy
Inspection requirements around Ankara can involve engineered equipment, structural fabrication and project-specific industrial packages.
Sakarya
Transportation Equipment · Machinery · Fabricated Assemblies
Sakarya is relevant to transportation and industrial manufacturing projects requiring welding inspection of fabricated structures and assemblies.
İzmir · Aliağa
Marine · Process Industry · Steel · Energy · Industrial Fabrication
Welding inspection requirements can involve process equipment, piping, tanks, marine fabrication, structural steel and industrial equipment.
Other Locations in Turkey
Tekirdağ · Eskişehir · Konya · Adana · Mersin · Hatay · Manisa · Kayseri
Requirements can also be reviewed in other Turkish manufacturing locations according to the supplier address and required technical profile.
For broader industrial inspection coverage:
Explore Third-Party Inspection Services in Turkey
The supplier determines the location. The fabrication determines the welding expertise.
Assignment models
One Welding Hold Point or Continuous Surveillance
Different fabrication programs require different levels of welding inspection.
One Visit
Suitable for one defined activity such as:
- Fit-Up
- Hold Point
- Welding Activity
- NDT Witness Point
- Repair Verification
- Final Weld Inspection
Recurring Welding Inspection
Repeated attendance throughout fabrication. Suitable where independent inspection is required across:
- Fit-Up
- Production Welding
- NDT
- Repairs
- Manufacturing Progress
This model can provide more visibility than relying on a single final inspection after fabrication is complete.
Resident Welding Inspector
Frequent or continuous welding-inspection presence for extended fabrication programs. Resident coverage can maintain continuity across:
- Fabrication Progress
- Previous Findings
- Weld Repairs
- NDT Status
- ITP Points
- Documentation
- Reporting
Rotational Welding Inspection
For long-duration assignments, inspector rotations can maintain technical coverage without relying on one person throughout the complete project.
Multi-Site Welding Inspection
Industrial projects may include welded equipment manufactured by several Turkish suppliers. Inspection can be coordinated across different fabrication locations while maintaining visibility over the overall project status.
Why inspect during fabrication?
Welding Evidence Disappears as Manufacturing Progresses
A final inspection cannot recreate every condition that existed during welding.
After fabrication progresses:
- Root conditions may no longer be visible
- Fit-up cannot be reconstructed
- Preheat conditions cannot be retrospectively confirmed
- Welder activity becomes harder to verify
- Internal welds may become inaccessible
- Assemblies may be closed
- NDT may already be completed
- Surfaces may proceed to blasting and coating
- Equipment may enter final assembly
Recurring welding surveillance provides visibility while these activities are actually happening. For critical fabrication, this can provide significantly more useful project information than waiting for final visual inspection.
Inspect welding while the manufacturing evidence still exists.
Reporting
Clear Welding Inspection Records
Depending on the agreed scope, Dilenza welding inspection reports can document:
- Inspection date
- Supplier and location
- Equipment inspected
- Fabrication progress
- Drawing or weld references
- Documentation reviewed
- WPS reference
- Welder identification where applicable
- Welding activities observed
- Fit-up findings
- Visual inspection results
- NDT status
- Deviations
- Non-conformities
- Weld repairs
- Outstanding items
- Photographic evidence
- Follow-up status
- Inspector comments
The report should give the project team a clear record of: What Was Inspected · What Was Observed · What Requires Action · What Remains Open
Why Dilenza
Why Dilenza for Welding Inspection in Turkey?
Welding-Specific Profile Matching
Inspector selection starts with the welded equipment, material, process, applicable requirements and assigned responsibilities.
International Qualifications
Requirements can include profiles holding AWS CWI, CSWIP 3.1, CSWIP 3.2, IWI and relevant NDT qualifications.
Strong Heavy-Fabrication Coverage
Turkey's shipbuilding, machinery, process-equipment and steel-fabrication sectors create requirements for several different welding-inspection profiles.
CV Review Before Confirmation
Relevant profiles can be submitted for client technical assessment before assignment confirmation.
Flexible Deployment
Support can range from one welding hold point to recurring, resident or multi-site inspection.
International Project Requirements
Inspection can follow purchaser, EPC and project-specific requirements at Turkish manufacturers.
Not simply a welding inspector in Turkey. The right welding inspector for your fabrication.
Scope boundaries
Welding Inspection vs Other Inspection Services
This service covers welding inspection in Turkey. For broader requirements, the following services may be more suitable.
General Industrial Inspection in Turkey
For multidisciplinary technical inspection, broader country coverage and general manufacturing support:
Vendor Inspection
For complete manufacturing surveillance involving mechanical inspection, FAT, documentation and other disciplines:
Coating Inspection
For surface preparation, coating application, environmental conditions and coating measurements:
Resident Inspection
For broader long-term technical presence extending beyond welding:
This separation helps ensure that each inspection requirement is handled by the appropriate technical discipline.
What to send
Request a Welding Inspector in Turkey
You do not need to prepare a long enquiry.
Send whatever project information is already available.
Have only the supplier location and ITP? Send those first. We can review the technical requirement from there.
- SupplierCompany · City · Factory / Shipyard Location
- EquipmentVessel · Pressure Equipment · Piping · Structural Steel · Machinery · Other
- MaterialIf known.
- Welding ProcessIf known.
- Welding ScopeDocumentation · Fit-Up · Production Welding · Visual Inspection · NDT Witnessing · Repairs
- Required QualificationAWS CWI · CSWIP 3.1 · CSWIP 3.2 · IWI · NDT · Other
- StandardsISO · EN · ASME · AWS · API · Client Specification
- ScheduleInspection Date · Duration · Frequency
- DocumentsITP · WPS · PO · Specification · Drawings
FAQ
Welding Inspection in Turkey
Does Dilenza provide welding inspection services throughout Turkey?
Yes. Welding inspection requirements can be reviewed throughout Turkey according to supplier location, equipment, technical scope, required qualifications, schedule and suitable inspector availability.
Can Dilenza provide AWS CWI inspectors in Turkey?
Yes. AWS CWI-qualified profiles can be reviewed where that qualification forms part of the project requirement. Relevant equipment and fabrication experience should also be considered.
Can Dilenza provide CSWIP welding inspectors in Turkey?
Yes. Profiles holding CSWIP 3.1 or CSWIP 3.2 can be reviewed according to the technical requirements and relevant industry experience.
Can Dilenza provide IWI welding inspectors in Turkey?
Yes. International Welding Inspector profiles can be considered where IWI qualification is required.
Can the inspector review WPS, PQR and welder qualifications?
Yes, where this forms part of the agreed inspection scope. Welding documentation can be checked against the controlled project requirements.
Can Dilenza provide shipyard welding inspectors in Turkey?
Yes. Welding-inspector profiles with relevant shipbuilding and marine fabrication experience can be reviewed for vessel structures, ship blocks, piping, repairs and other marine applications.
Can Dilenza provide welding inspectors in Tuzla?
Yes. Tuzla is particularly relevant to shipbuilding, vessel repair, marine fabrication and associated welded equipment.
Can Dilenza provide welding inspectors in Yalova?
Yes. Yalova and Altınova are particularly relevant to shipbuilding, vessel construction, marine fabrication and heavy welded structures.
Can Dilenza provide welding inspection in Kocaeli or Gebze?
Yes. Requirements can be reviewed for pressure equipment, process systems, piping, machinery, structural steel and other industrial fabrication.
Can Dilenza provide welding inspection in Bursa?
Yes. Welding inspection can be reviewed for machinery, transportation equipment, fabricated components and industrial manufacturing.
Can Dilenza provide welding inspection around İzmir or Aliağa?
Yes. Requirements can involve process equipment, marine fabrication, structural steel, piping, tanks and energy-related equipment.
Can Dilenza inspect pressure vessel welding in Turkey?
Yes. Welding inspection can support pressure vessels, heat exchangers and other process equipment according to the applicable ITP, project requirements and inspector qualification.
Can Dilenza inspect structural steel welding?
Yes. Inspection can support joint preparation, fit-up, welding, visual examination, NDT status and weld repairs for structural steel and heavy fabricated assemblies.
Can Dilenza support railway welding projects?
Yes. Requirements involving railway equipment and welded transportation structures can be reviewed according to the controlled project specifications and required inspector experience.
Can Dilenza provide EN 15085-experienced inspectors?
Where EN 15085 forms part of the project requirements, profiles with appropriate railway welding and relevant standard experience can be reviewed.
Can the welding inspector witness NDT?
Where defined by the client's ITP, the inspector can witness specified NDT activities or verify their status according to the agreed responsibilities.
Can Dilenza provide NDT-qualified inspectors?
NDT qualification requirements can be reviewed according to the examination method, applicable standard and project responsibilities.
Can the inspector follow weld repairs?
Yes. Where included in the scope, inspection can follow weld repair preparation, re-welding, re-examination and close-out.
Can Dilenza provide recurring welding inspection?
Yes. Recurring attendance can be arranged around fabrication stages including fit-up, welding, NDT and repairs.
Can Dilenza provide a resident welding inspector in Turkey?
Yes. Resident welding inspection can support fabrication programs requiring frequent or continuous technical presence.
Can an inspector attend for only one day?
Yes. Single-day assignments can support a defined hold point, fit-up inspection, welding activity, NDT witness point, repair verification or final weld inspection.
Can we review the inspector CV before confirmation?
Yes. Relevant CVs, certifications and welding experience can be submitted for client technical assessment before deployment.
Which welding standard will the inspector use?
The applicable standard and acceptance criteria must come from the controlled project documentation. Depending on the project, requirements may involve ISO, EN, ASME, AWS, API, classification society or client-specific requirements.
Request a welding inspector
Need a Welding Inspector in Turkey?
Send us the fabrication requirement.
- Supplier Location: Where is the manufacturer, fabrication facility or shipyard?
- Equipment: What is being welded?
- Material: What materials are involved?
- Welding Process: If known.
- Required Qualification: AWS CWI · CSWIP · IWI · NDT · Other
- Applicable Standards: ISO · EN · ASME · AWS · API · Client Specification
- Inspection Scope: WPS / Documentation · Fit-Up · Welding Surveillance · Visual Inspection · NDT Witnessing · Repairs
- Date / Duration: One Visit · Recurring · Resident
- Upload Documents: ITP · WPS · Specification · PO · Drawings
- Contact: Name · Company · Business Email
Have only the supplier location and ITP? Start with that. We can review the welding-inspection requirement from the available documentation.
Diligence Across Turkey's Welded Supply Chain.
Independent welding inspection for shipbuilding, pressure equipment, piping, structural steel, machinery and industrial fabrication throughout Turkey.