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Plastics Welders CSWIP
CSWIP / UKAS
Plastic Welders CSWIP Fees

TWI offers certification aligned to the British and European standard for approval testing of plastics welders (BS EN 13067) and also Entry Level certification, via the internationally recognised Certification Scheme for Welding and Inspection Personnel (CSWIP)

Certification is available in the following categories:

Hot gas welding
  • Round nozzle welding of PVC
  • Speed nozzle welding of PVC
  • Speed nozzle welding of PP
  • Speed nozzle welding of PE
  • Speed nozzle welding of PVDF
  • Speed nozzle welding of ECTFE, FEP or PFA
Extrusion welding
  • PP
  • PE
Butt fusion welding
  • PP pipe (diameters < 315mm)
  • PP pipe (diameters > 315mm)
  • PE pipe (diameters < 315mm)
  • PE pipe (diameters > 315mm)
  • PVDF pipe
Socket fusion welding|
  • PP pipe
  • PE pipe
  • PVDF pipe
Electrofusion welding
  • PE pipe (diameters < 225mm)
  • PE pipe (diameters > 180mm)
  • PE pipe (saddle, all diameters)
Geomembrane welding
  • Machine electric heated wedge welding of PE lining membrane
  • Extrusion welding of PE lining membrane lap joint