We specialize in nondestructive testing (NDT). We conduct visual testing VT, penetrant testing PT, electromagnetic (magnetic particle testing MT, ACFM) and ultrasonic (conventional ultrasonic testing UT, ultrasonic thickness measurements UTT, phased array testing PAUT) inspections of welded joints, forgings and castings in construction facilities in petrochemical, refinery, paper, power and many other industries.


Experience The most significant structures examined, inspected and/or supervised by us:

  • Forsmark 3 Turbine rotors 1172MWe for GE Power AB in nuclear power plant in Sweden
  • Turbine rotors 35-858MW for Alstom Power, GE Power, RWE nPower, Polimex Mostostal, Doosan Babkock Energy, IP-Kwidzyn
  • Large scale castings and forgings for ABB Zamech, ABB Marine, Alstom Power, FLS Smidth - Fuller Engineering Group, GE Energy,
  • Millennium Bridge in London
  • Road bridges Ahedan, Allebron and Saltsjobron in Sweden
  • Structural steel elements of the bridge connecting Copenhagen and Malmo
  • Hydrocracking reactors in refineries ORLEN in Plock and LOTOS Group in Gdansk as well as elements of piping systems in Gdańsk
  • Different technological units in pulp-paper mill of International Paper-Kwidzyn factory
  • Steel platforms for Copenhagen metro (subway) and new airport hall structure of Kastrup Airport in Copenhagen
  • Steel structures of New Telecommunication Center with Antenna Tower (380m) in Kuwait
  • Pier structure for Trelleborg harbor in Sweden
  • Steel structures and rails of corn terminal in Sea Trade Harbor in Gdynia
  • Steel riveted tank on Gothic water tower in Malbork

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With a great pleasure and satisfaction we would like to offer you a cooperation with our company which has been established in 5th March 1991 as Koli Co. Ltd.

We provide NDT services, including independent inspection, supervision and examination.

We will be happy to advise you in the field of NDT and recommend our professional instruments, equipment and consumables for non-destructive testing coming from the best manufacturers from all over the world.

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Head Office - Board

Answering questions, accepting orders,
offering and invoicing

Lotnicza 119 str,
80-297 Banino k/Gdańska,

tel. +48 58 684 86 61
      +48 58 684 86 62



Branch Office - Service

Servicing and checking
radiographic industrial viewers

Stokrotkowa 14 str,
87-100 Toruń,

tel. +48 56 654 66 27