Certified according to DIN ISO 9001 : 2015

Europe's most versatile supplier of combustion doors, inspection openings and combustion dampers.




Langen Feuerungsbau manufactures special fireproof doors for industry and the energy sector

Langen Feuerungsbau GmbH specialises in high-quality fireproof special doors for industry and the energy sector, in particular for combustion plants, power stations, industrial furnaces, exhaust systems, boiler and drying plants as well as waste incineration plants and biogas plants.

Langen Feuerungsbau GmbH

We manufacture these inspection doors, inspection ports, access doors, explosion doors and maintenance holes individually according to customer specifications and deliver our products to customers throughout Europe. Here, the fire-resistant doors are used in various industrial sectors, including incineration plants and the energy industry.

Most of our products are available from stock. In the case of custom-made products, for example, we manufacture according to individual customer specifications and dimensions, with or without inspection ports, fireclay boxes, insulating boxes, protective plates, frames, etc.

Langen Feuerungsbau GmbH

We offer industrial and commercial customers, customised solutions for a wide range of challenges in the following areas:

  • Maintenance hole cover - permanent tightness thanks to sophisticated hinge solution
  • Standard access doors - also in gas-tight design in various versions
  • Individual modular system for access doors
  • Inspection ports - with and without flaps, with various purge air connections
  • Explosion doors and explosion flaps - in individual design
  • Poke dampers, inspection doors and inspection flaps
  • Cleaning doors - with and without opening aids

Unless otherwise requested, our special doors are made of several types of cast iron for different temperature ranges and can be used up to 500 degrees Celsius as standard.

The casting types are listed in our catalogue with the designations M01 to M19. For higher temperatures up to 1300 degrees Celsius we use heat-resistant cast steel. Our doors are centrally pendulum-mounted, the displacements are mechanically machined and thus provide optimum contact pressure on the seals all around.

Langen Feuerungsbau GmbH

Your benefit: Our refractory construction supplies refractory doors for a wide range of industrial challenges and tasks

The quality of our special doors and inspection ports and the personal contact to our customers and their very special tasks are the decisive plus points of a cooperation with Langen Feuerungsbau GmbH. Our firing construction company, founded by Willy Langen more than 60 years ago as Stahlbau Langen, today stands for high-quality fireproof doors in the industrial and energy sectors. Whether entry doors, inspection doors or explosion doors - our special doors and inspection ports meet all the requirements of the special industrial segments in which they are used. We see ourselves as a competence and performance partner for ports and doors for combustion plants.

Fire doors made to measure or standard - the choice is yours

Every industrial plant is different: Our fire-resistant special doors are therefore custom-made according to customer specifications or you can select standard doors from our extensive door portfolio. With the right combination of material and insulation components, our doors are designed for a wide range of temperatures and pressure ranges.

Central location of manufacturing in the western Ruhr region

Today, the traditional company Langen Feuerungsbau GmbH is managed by Anja and Karsten Vogt, and the company headquarters were relocated from Burscheid to Duisburg in 2021. The central location in the western Ruhr region with excellent logistical links to a dense motorway network, Düsseldorf Airport and Logport Duisburg, the generous space available at the company headquarters, the state-of-the-art machinery in the comprehensively equipped production facility and our qualified and motivated employees set the course for ensuring that our company is ideally positioned for the future. Our internal design department and in-house steel construction complement the possibilities of manufacturing high-quality and customised fire doors on site.

Long-term and close customer relationships, in-depth technical understanding and years of know-how are the prerequisites for us to be able to think deeply into the special requirements of our customers and offer a custom-fit fire door for every industrial task: Tell us your challenge in the field of firing technology and we will supply the right door for the firing system of any need and application!

Langen Feuerungsbau GmbH
Our furnace construction: cleaning doors, access doors, inspection ports

Do you need fire doors, cleaning doors or maintenance holes, do you need fireproof inspection doors, access doors, inspection ports or explosion doors for your plant in the field of energy technology, power plant technology, waste incineration or steel industry? Then call us or send us an e-mail. We will be happy to advise you and look forward to providing the right solution for your specific requirement!

Company vacation
from 22.07.2024 until 02.08.2024

On 05.08.2024 we will be available again personally in the office.
E-mails will be read but not officially answered until after the vacation.

In urgent emergencies we can be reached by e-mail.

The switchboard will not be manned during the above-mentioned period.


Vacances d'entreprise
du 22.07.2024 au 02.08.2024

Le 05.08.2024, nous serons à nouveau joignables personnellement au bureau.
Les e-mails seront lus, mais nous ne répondrons officiellement qu'après les vacances.

En cas d'urgence, nous sommes joignables par e-mail.

Le standard téléphonique n'est pas occupé pendant la période susmentionnée.