Whether you are a company looking to train personnel or an individual who wishes to improve your skill set, TWI can help. We offer tailor-made courses at basic, refresher and advanced levels leading to internationally recognised assurance qualification for competence and safety.

Our courses are applicable to those working in the oil, gas and chemicals, power, automotive, aerospace and construction industry sectors.

We can also provide specialist courses including a general introduction to plastics welding, the adhesive bonding of plastics and laser welding.

We deliver courses at our premises in Cambridge and Middlesbrough in the UK and also on-site at company premises anywhere in the world.

Why choose TWI?

TWI is a world recognised material joining and technology organisation who teaches ‘best practice’ when carrying out training for all welding and joining techniques.

Proving your competency

Case Study

To be ahead of the rest, Poseidon Ocean Systems have taken their staff up to full standard level certification.

Read more

Plastics welder training services

We offer:

  • Witness approval tests
  • Full NDT and mechanical test house facilities
  • Assistance to identify test type and determine the range of approval required to minimise the number of approved tests
  • The qualification documentation is issued and authenticated by TWI Certification Ltd

Did you know?


Globally recognised qualifications

You can access the scheme documentation which includes detailed information regarding entry requirements here

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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!

Continuing Professional Development icon

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

Can you train on-site and with our own equipment?

Yes, the training can be carried out at your premises and with your equipment, all you need to do is request it at the time of booking the course.

What certification is mandatory in the UK?

In the UK currently certification is mandatory for the installation of lining systems and piping to cover the methane and leachate removal from landfill sites but is being extended by the Environment Agency to cover all lining systems.

How long before certificates are issued and who owns them?

It should take no more than 30 days for you to receive the certificates from TWI, and the owner is the person or company who paid for the course.

How long does the certification last?

Certification for pipes, fabrication and the Lining systems lasts for 2 years plus 2 years of prolongation, so a total of 4 years. The CQA course certification lasts for a total of 5 years and for the Plastic Visual Welding Inspectors course the certification lasts for 3 years with a further 3 of prolongation, for a total of 6 years.

Can you combine courses i.e. pipes and fabrication?

Yes, as most of the courses we deliver are bespoke to that company, a course can be designed to suit your individual requirements as long as you inform us at the time of booking.

Do you deliver courses outside of the UK and is the certification recognised?

Yes, we deliver overseas courses – so far in 17 different countries! All companies required the CSWIP certification to the European standard EN 13067: Plastic welding personnel qualification testing of welders, Thermoplastic welded assemblies.

What opportunities are there in the plastic welding industry?

As plastics is a growing market opportunities are opening. Currently there are vacancies in the aquaculture business (Fish farming), piping and fabrication sectors. The housing sector has gas membranes that require welding and are more commonly used, in addition the regulation regularly changes throughout the industry.