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KASAG is a medium-sized industrial company in Langnau in the Swiss region of Emmental. Since 1929, the company has been creating jobs in this region for a qualified skilled workforce. This hilly region in the canton of Bern, endowed with a beautiful landscape, is not just home to the world-renowned cheese with holes, but also to numerous innovative companies that have gained a great reputation globally. KASAG is one of them. Design and construction of devices, containers, pressure vessels, heat exchangers, fractionating columns, assemblies, etc. for the chemical and pharmaceutical industries, as well as food, environmental and bioengineering. Engineering and manufacture of batch cooking plants for producing fruit bases, jams, compotes, marmalades, sauces, vegetables and other foods. Engineering of installations for heat recovery from waste water systems, as well as production and assembly of sewer heat exchangers for different types of sewers.

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Pressure vessels, reactors, Pharmaceutical and biotech pressure vessles, Process containers, storage tanks, Modules, components, plants, High-pressure apparatuses,Heat exchangers, vaporisers, condensers, Cryo pressure vessels, technologies Nuclear technology, Vacuum chambers, vacuum apparatuses, Columns, according to PED (EN13445 / AD-2000), ASME (U-Stamp), China Stamp (A1), TP TC 032/2013 (EAC) Pharmaceutical and biotech apparatuses are calculated and manufactured according to your requirements. Stainless steel and special materials are used in the production. After that, the products are grinded, electropolished and tested using non-destructive testing methods, such as ferrite measurements, used for the determination of the ferrite content, or by using the riboflavin test to measure total discharge and CIP/SIP capability. All materials, methods and processes used have been documented in full in detailed QA documents and can be tracked at any time. You can depend on KASAG.


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You now operate in an environment where production safety and perfect product quality have top-most priority. You must be able to place unlimited trust in your partners and to demand everything you need. With KASAG as your partner in design, engineering and production of apparatuses, pressure vessels, pressure containers, reactors, heat exchangers, modules and plants for global use, you are on the safe side. Core competences of KASAG: Design, calculation, construction according to diverse regulations, pressure equipment approvals, such as PED (EN13445, AD-2000), ASME (U-Stamp), China Stamp (A1), TP TC 032/2013 (EAC) Manufacturing permits and knowhow for the delivery of pressurised containers, apparatuses, plants to almost all the countries in the world. Welding of stainless steel and special materials such as Hastelloy, Inconel, Duplex Comprehensive spectrum of non-destructive tests Surfaces that meet the highest standards


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Reactors must meet the highest quality requirements. The pressurized objects are designed at KASAG according to the relevant regulations and subsequently produced, with great enthusiasm, using the most modern technology. Stainless steel and special materials, such as duplex and nickel-based alloys (Hastelloy, Inconel) are processed. All our production experts have the mandatory certificates, and have mastered the welding process MIG, MAG, TIG, Plasma and Orbital and work solely with certified welding consumables. The pressure vessles and chemical reactors are finally polished, pickled, passivated and tested using non-destructive test methods. KASAG products meet all your standards.


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You state your requirements and send us the material properties. KASAG then configures the thermal and hydraulic calculations for the desired heat exchanger. The realization is implemented according to the available drawings or on the basis of a comprehensive engineering. KASAG offers all processes necessary for that, such as the orbital-welding process for manufacturing heat exchangers. With KASAG, you can be sustainably flexible.

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Company info

Key figures

  • Company headcount
    51 – 100
  • % of export sales


  • Year established
  • Site status
    Registered office – Parent company
  • Main activity
    Manufacturer/ Producer

Business info

Trading areas

  • Regional
  • National
  • European
  • Check Circle Outline icon International

Delivery areas

Terms of delivery (incoterms)

  • Purchaser
  • Shared
  • Vendor

Keywords associated with this company

  • Engineering - industrial consultants
  • Fruit-based preparations
  • stainless steel and alloy pressure apparatus
  • Apparatus and container manufacturing
  • Equipment manufacturing using stainless steels and special materials
  • Stainless steel exchanger
  • Devices and containers for the pharmaceutical industry
  • Stainless steel containers for mixing devices
  • reactors for chemical plant
  • Stainless steel process containers