The European Federation for Welding, Joining and Cutting (EWF) and International Institute of Welding (IIW) diplomas are widely accepted by employers as high quality vocational education in welding engineering. They confirm a high level of knowledge and expertise that is recognised around the world, supporting the exacting quality requirements for welding coordination across a wide range of applications, materials and processes.

These unique qualifications will place you and your employees above much of the competition, giving your customers high confidence in your organisational understanding of welding.

The EWF/IIW diplomas delivered by TWI are a modular programme, enabling progression in stages through three levels of qualification:

  • Specialist (IWS) - 6 modules
  • Technologist (IWT) - 4 modules
  • Engineer (IWE) - 4 modules

Each module lasts one week and finishes with an exam.

TWI Diploma

The TWI diploma courses are designed to provide professional development routes for those candidates who currently do not satisfy the EWF/IIW access conditions for the European/International Welding Engineer diploma. Find out more

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Jack McGuinness

Case study

Jack McGuinness is building a career in engineering by choosing to work towards the EWF/IIW diploma with TWI.

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Career path

Gaining a recognised international diploma in welding engineering will unlock a wide range of career opportunities including welding coordinator, welding technician, quality assurance coordinator or welding supervisor.

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Develop your career with TWI

Samantha Buchan

Case study

Closing the skills gap, Samantha Buchan is also flying the flag for women in engineering.

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Customised training

If you can't find a training course to suit you, we can create bespoke courses to meet your individual, industrial or company needs.


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I wouldn’t consider going anywhere other than TWI, it's the best.

Stephen Payne, UK  Read more about Stephen

What is the EWF/IIW Welding Diploma?

David Bage explains the EWF/IIW Welding Diploma, what is involved and how to progress from International Welding Specialist to Technologist and Engineer levels.

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IIW qualifications

Keep in touch with IIW news, by visiting their website:

detailed programs now available!

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Professional Membership of The Welding Institute

Membership gives you access to all the technical knowledge that you need and will also make it easier for you to achieve your own personal learning and development goals.

You can also qualify for a 5% discount on training courses. Find out more!

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Continuing Professional Development

You can gain CPD points when attending this course - Find out more!

Frequently asked questions

Try our list of frequently asked questions.

If you can’t find an answer, please contact us using the button below: Contact customer services

I have academic qualifications and broad experience in welding. Can these be recognised in order to speed up the process?

Subject to assessment, yes. If experience and level of responsibility operating at the corresponding level can be proved, then you are eligible to access via alternative route. In any case, a CV must be submitted for assessment.

I am not interested in getting the diploma but I would like to attend one or more of the courses. Is this possible?

Yes. You can attend the diploma courses as guests and although you will not be allowed to sit the exam, you will get a Certificate of Attendance.

Is there a document which establishes the minimum requirements necessary to obtain the IIW/EWF Diploma?

Yes. The International Institute of Welding produced the IIW Guideline IAB-252r3-16 Personnel with Responsibilities for Welding Coordination: Minimum Requirements for the Education, Examination and Qualification. This document specifies the syllabus, learning hours, learning outcomes, and examination requirements for the IIW diplomas and is available at

Why is it important to have recognised knowledge in welding coordination?

The International Welding Diploma in context. ISO 14731 Welding Coordination - Tasks and Responsibilities, specifies that responsible welding coordination personnel shall be able to demonstrate adequate general and specific knowledge in welding and allied processes to perform these tasks. The standard also specifies in its Annex A that welding coordination personnel holding the international welding specialist (IWS), technologist (IWT), or engineer (IWE) diploma may be considered to satisfy the specific knowledge requirements of ISO 14731.

What are the advantages of complying with ISO 14731?

Compliance with ISO 3834 quality requirements for fusion welding of metallic materials, is being increasingly specified worldwide as the route to evidence management of quality for welded products. ISO 3834 states the requirement for appropriate welding coordination personnel. Responsible welding coordinators must comply with ISO 14731 and gaining the IWS, IWT or IWE diploma can be a key step in achieving compliance with ISO 3834.

Who can issue this diploma/qualification?

The diploma can only be issued by an authorised nominated body (ANB), as established by the International Institute of Welding. There is only one ANB per member country. TWI Certification Ltd is the ANB in the United Kingdom.

I live outside the UK. Can I still gain the diploma qualification by attending the courses in the UK?

Yes, subject to complying with the access requirements (IIW/EWF Welding - Routes to Qualification)