Estanc manufactured it’s first pressure vessel in year 2001. By today we have risen to a position where our pressure process equipment is represented in petrochemia-, energy-, food-, chemical-, mining-, farming- and in pulp and paper industries. Our range of pressurized tanks includes: reactors, evaporators, deaerators and feedwater tanks.

We put our focus on long-term client relationship, which makes high quality our top priority along with good customer service. We also keep in mind competitive price and developing our technological processes. In addition to forementioned we put maximal effort into timeliness of the projects to earn our clients trust.

Thanks to our wide product range our clients benefit from ordering big projects from us. In addition to pressure vessels our clients can add to the projects: pressure less vessels, heat exchangers, scrubbers, chimneys and pipings.

How do we ensure the quality of pressure tanks ?

To ensure the top quality and timely delivery we have added to our team welding engineers and in-house quality specialists. Additionally we work with NOBOs for NDT tests. Our high quality of products is guaranteed by various certificates that you can find here.

We believe that we can differ from our competitors in our level of expertise and high quality of the full service. In-house design and project management divisions are responsible for our products technical capabilities and the successful go-through of the projects in accordance to our clients expectations.


  • First stainless steel pressure vessel: manufactured in 2003
  • First welding overlay vessel: manufactured in 2016
  • Biggest in-house manufactured pressure vessel diameter: 6,5 m
  • Longest vessel manufactured in-house: 47 m
  • Heaviest in house manufactured pressure vessel: 190 t
  • Vessel with the highest working temperature: 562°C
  • Vessel with the biggest pressure: 355 bar
  • Thickest material used thusfar: 50 mm
  • Vessel with the biggest cubage: 857 m3
  • Vessel with most manhours: 13,200 manhours



Project videos of pressurized tanks

Video ThumbnailBlow Down Vessels production and transportation - youtube Video
Short documentary: Transportation of a 857m3 feedwater tank, the biggest unit in Estanc's history - youtube Video
pressurized storage tank

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Strength calculations




Assembly Preheatment

Overlay welding


Heat Treatment (PWHT)







Contact us


Tarmo NorkSales Development Manager

+372 5050300

Andres KolloSales Manager

+372 5245 468

Roger Erikson 2020

Roger EriksonSenior Sales Engineer

+372 5341 0624

Jorma Laine

Jorma LaineSenior Sales Manager Estanc Finland OY

+358 40 849 2112

Janno LehtmeTechnical Manager

+372 5212 062

Jan Böttger

Jan BöttgerDeaerators Sales Lead

+372 7123 650

Aarni KontturiTechnical Consultant

+358 50 535 7191