Archive of our activities


Our sister company Preziehs GmbH will be present at Tube 2022, from 20 to 24 June in Düsseldorf. We would be very pleased to welcome you at our stand. You will find us in hall 4, stand number 4C44.


After we finished the exhibition stand of our sister company Preziehs yesterday, we are looking forward to your visit and a constructive exchange as of today, 20.6.22.


At the moment we are producing, among others, so called rack shelves. These racks are movable and consist of various perforated sliding shelves. They are used for drying various products. The shelves can be completely pushed into a drying oven, because they are made to measure. You can see an insight into the machining process here.


In order to adapt the loads on our perforated sheet facades to the situations prevailing on site, wind resistance and pendulum impact tests are carried out in advance. The facade is loaded with a multiple of the previously measured pressure. In the process, it must not become detached from its fastening. 


Delivery of a 400 tonne press in 1979

In 1979, a 400 tonne press was delivered to Dillinger Lochbleche. Today it continues to do its work in our subsidiary DF-Bulgaria. The former managing director Dr. Walter Koch and Hans Ulrich Koch are pictured on the left setting up the press.


Delivery of a 600 tonne press in 2021

In June 2021, a new 600-tonne Soehnen wide press was delivered to Dillinger Lochbleche. Again, 42 years later, the current Managing Director Hans Ulrich Koch and the former Managing Director Dr Walter Koch accept the press at the same location. 


With the delivery and installation of the new Soenen wide press, we are now able to offer you a broader portfolio. New hole patterns are possible as well as larger widths. We would be happy to inform you about all the new possibilities in a short conversation. The use of the most modern tools and the resulting more effective, more versatile production will have a positive effect on the tasks to be realised. We look forward to offering you this additional service in the future.


Two years of planning, one year of construction, total investment 3.1 million euros: Dillinger Fabrik gelochter Bleche GmbH is investing heavily in its future by building a new 3200 sqm hall. "In Corona times, this is good news after all", explained Mayor Franz-Josef Berg. He accepted the invitation of the managing partner, Hans-Ulrich Koch, to visit the company to find out about the further development of the traditional company and was impressed after a tour of the factory. This year, the company is looking back on its 125th anniversary. Due to the Corona pandemic, the anniversary celebration and an official inauguration of the new hall were cancelled.

Founded in 1895, Dillinger Fabrik gelochter Bleche GmbH has specialised in the manufacture of perforated sheets and is today one of the leading perforated sheet manufacturers in Europe. As Hans Ulrich Koch said: "one is always looking for niches", and obviously very successfully so. The perforated sheeting products are supplied to more than 20 countries via foreign partners. Together with its subsidiaries and sister companies, the DF Group employs around 400 people, 250 of whom work in Dillingen. The new production facility and the expansion of the product range could create up to 25 new jobs. This depends not least on further developments.

Although the Corona crisis has also forced the DF group of companies to introduce short-time working, the company is looking to the future with confidence as it has established a broad-based production base. "Of course, this year has hit us hard, but if the measures taken by politicians in the economy take effect, we hope for a good year 2021", Mr Koch explained. In addition to the new hall, the company has invested around 7 million euros in state-of-the-art technology at all its sites in recent years.

Together with Managing Director T. Kraus and A. Rospert (Preziehs GmbH & Co KG), a sister company of the DF Group, Mr Koch guided the mayor through the production halls. There, Mr. Berg was shown a small impression of the range of the specialist for perforated sheets. "I am glad that we have such a large company in Dillingen, which makes an important contribution as an employer through investments and innovations. I wish the group of companies continued success for the future," said the mayor. ( Source: City of Dillingen / Theobald )


Our sister company perfox is currently presenting itself in Sweden at the perforated sheet trade fair.


Our welding robot is currently producing a large number of perforated reinforced steel bottoms. The steel has been provided with a r10/15 perforation, where the long side is folded and provided with a C bend. Rectangular tubes and flat bars are welded in to reinforce the bottoms. The floors are manufactured by our sister company Preziehs.Here you can see the robot during production.


Our subsidiary Preziehs participated in Filtech 2022 from 8 to 10 March. We would like to thank all visitors and interested parties of our stand, who ensured a successful participation of our subsidiary.


The production of this perforated plate drum was realised in close cooperation with our customer. The material thickness was 5 mm due to the special requirements. The diameter of the drum is 3 m with a length of 8 m and straight square perforation. In addition, a screw conveyor with different pitches with interrupted welded-on running and axial rings was welded on.



You find our new flyer of individual corrugated cladding here, or in the download area.


You can find our new image brochure here or in the contact downloads section.


In our sister plant DF-Bulgaria, the work on the enclosure of press 40 has been completed (as of 13.09.2021). In addition to full functionality, the noise level has now also been reduced to create a more pleasant working environment for our employees. 


In order to further perfect the production process, another Safan folding bench was added to the manufacturing process today (06.10.2021).


Our new 600 ton wide press is ready for operation as of now (26.08.2021). The final work and fine adjustments have been completed and production can begin. We look forward to being able to carry out your orders with the most modern technology and the greatest precision.


The production of this drum screen was realised in close cooperation with our customer. Due to the different diameters of the perforations of the inner and outer drum, it is possible to screen small living creatures from their natural habitat.


On the former site of the Oststadtklinik in Hannover Groß Buchholz, a new residential quarter with approx. 400 flats has been built on 70,000 sqm in the midst of generous green spaces at affordable prices. The project includes condominiums as well as privately financed and subsidised rental flats. Dillinger Fabrik gelochter Bleche is supplying the balustrade infills for the balconies and the spiral staircases. The material used is 3 mm thick lasered aluminium, coated in the colour RAL 7034 .


Our sister company Preziehs GmbH now has a new welding robot at its disposal. In order to further perfect the production process and to achieve optimal results for serial production, Preziehs GmbH has invested in this production tool. Fast production times with best quality and cost-effective production are the criteria we pass on to our customers. Here you can see the welding robot in action


After press 40 was delivered to reinforce the capacities of our heavy-duty plant DF-Bulgaria, the work on the cabling has now been completed. At the moment, the already fully functional press is being enclosed to reduce the noise level.