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P-D Refractories, Dr. C. Otto trains!


P-D Refractories GmbH at the Dr. C. Otto site in Bochum is providing training once again this year, namely for the professions of industrial mechanic, electronics engineer and industrial management assistant. Three young men and a young woman will spend time in various departments of P-D Refractories GmbH at the Bochum site over the forthcoming years to learn the various working techniques and procedures and to understand the system.

The Chamber of Industry and Commerce of the Central Ruhr Region has approved the engagement of P-D Refractories GmbH as a training enterprise with certification.


We wish our apprentices a good start to their professional lives and great success!

Donwload Certificate as PDF.

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Résumé glasstec 2018


This year, glasstec celebrated its 25th anniversary. Impressively it affirmed its position as leading trade show for the glass industry - once again, the event was a full success. From 23rd to 26th of October 2018, 1,280 exhibitors from 50 different countries had the opportunity to present their product highlights in Dusseldorf to more than 42,000 professional visitors from more than 120 different countries.

Also the stand of P-D Refractories enjoyed many visitors. We were given the chance to introduce new products and technologies, like for instance our new regenerator concepts. We are highly satisfied with how the trade show ran for us. The glass industry’s situation continuously develops positively.


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Otto's descendants visit the location Dr. C. Otto of P-D Refractories


On 15.10.2018 as part of their family reunion, descendants of our company founder Dr. Carlos Otto visited the plant location Dr. C. Otto in Bochum-Dahlhausen. Although the family has withdrawn from the company many years ago, interest in the progress of the site remains high.
A group of 16 people, consisting of great-, great-great- and great-great-great-grandsons of Dr. Carlos Otto were able to get an idea of ​​how the company has developed to date during a factory tour.

"Preserving tradition - shaping the future" is clearly visible here in Bochum-Dahlhausen.
Letter of thanks from Mr. Fritz Otto as PDF.
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Résumé ALUMINUM 2018


The ALUMINUM trade fair, which was bigger and more international than ever before, took place in Düsseldorf from 09. to 11.10.2018. A total of 971 exhibitors from 54 nations were represented at this year's world trade fair for the aluminum industry. The organiser counted 24,148 trade visitors from 123 countries.
The P-D Refractories GmbH booth was also highly frequented this year. We were able to present our refractory delivery concepts for anode furnaces and reduction cells with corresponding product highlights.
Particular attention has been paid to our new ThermStop ConceptTM.

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Very good for P-D Refractories – supplier rating from the HYDRO Group


P-D Refractories GmbH Dr. C. Otto and P-D Refractories CZ a. s. were rated from the HYDRO Group as an A-list supplier.

Dr. Carlos Otto is honoured in Höhr-Grenzhausen


An image of our company founder Dr. Carlos Otto has been given a place of honour in the joint new building of the Research Institute for Inorganic Materials Glass/Ceramic (FGK) and the European Centre for Refractories, ECREF) in Höhr-Grenzhausen.

After the completion of the new building, installations were set up as part of “Kunst am Bau” (‘art-in-architecture’) in the building that was officially inaugurated on 19 April 2013, dedicated to special personalities. These personalities earned their acclaim as “pioneers” either in ceramic research or the ceramic industry or in refractory research or the refractory industry. Three criteria applied to the selection of the personalities in the “People” installation, which Dr. Carlos Otto fulfilled with his pioneering work in the refractory field.
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P-D Refractories congratulates P-D Valmiera Glass USA Corp. for the successful inauguration of the fiberglass bath


In December 2017, the Ɛpsilon Solution™ basin delivery in P-D fused mullite was concluded and then, as reported on site by Mr. Uwe Pottetz, Project and Product Management P-D Glasseiden GmbH Oschatz, it was “wonderfully” heated. The heating of the floor and the basin of the bath quickly reached an even temperature, owing to the superior energy radiation of the Ɛpsilon basin. Now that it has been in use for a few months, the energy consumption to date is proving to be significantly lower than expected! We are delighted, Ɛpsilon is an excellent solution for us!

Under the direction of Valmiera Glas AG, a new fiberglass plant was built up in Dublin/Georgia USA within two years, from the planning to the opening on April 11, 2018.

On January 30, 2018, the first fiberglass was produced. A great performance that is unique in the world. Valmiera Glas AG as the main shareholder and the P-D Group have a long-term cooperation on the US market. For the Valmiera Glas stock company and its shareholders it is a further step forwards.

Mr. André Schwiontek, CEO of Valmiera Glass, is pleased about the successful commissioning of the glass tank in Dublin, Georgia, USA
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Very good for P-D Refractories – supplier rating by Thyssenkrupp


P-D Refractories was classified as an A-supplier by thyssenkrupp Steel Europe AG for the Wetro site and was rated with an overall result of 100%.

Download the full rating in German as a PDF.

P-D Refractories makes future-oriented investments at the Wetro site


This year P-D Refractories is investing around EUR 1.2 million in the expansion of a new post-processing at the Wetro site.

The construction of an industrial building, which has already been completed in recent years, as well as the initiated restructuring of the ceramic processing department, will be expanded in 2018 by a further 1.000 m² of a new building construction.
In addition to a new grinding plant for large-format blocks, this department will be used to set up a number of already existing saws, milling machines and lathes.


With this investment, P-D Refractories, Europe's largest producer of tin bath bottom and tank blocks, is responding to the increased demand of the container and float glass industry.  Furthermore, the steadily increasing quality requirements of machined shaped bricks, which are part of the core business of the Wetro site, are taken into account.
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P-D Refractories GmbH Dr. C. Otto has the solution: Ɛpsilon SolutionTM


Eleven customers worldwide from different glass manufacturing sectors have already chosen our Ɛpsilon solution. Whether it is in fused mullite, in silica or – as Dr. Frolow is holding in his hands here – in fused silica, it is an informed decision by our customers who want to save energy and reduce emissions.

Mr. Schlacht (on the left on the photo), Dr. Frolow and our international glass sales team will be happy to inform you, if you are interested, about the advantages of this solution and about the industrial experiences of our satisfied customers!
» Flyer Ɛpsilon Solution™ as PDF

Very good for Dr. C. Otto – supplier rating by RHI


P-D Refractories GmbH Dr. C. Otto was rated by RHI as an A-list supplier.

Download the full rating in German as a PDF.


Review TMS 2017


P-D Refractories GmbH was represented successfully at the International Aluminium Fair 2017- 146th Annual Meeting & Exhibition. The event was held from 26.2.2017 to 2.3.2017 in San Diego, California, USA.

“Our African market has been extended in the countries Ghana and Cameroon with fireproof P-D supplies for the aluminium industry”, states Erik Richter, our sales manager for aluminium. “P-D products – produced in Europe - are used worldwide in the aluminium industry: from Iceland to South Africa, from Canada to Venezuela, from Europe across the Middle East and Indonesia, as far as Australia”, Mr. Richter reports proudly. “P-D quality knows no borders”, he laughs!

P-D Refractories GmbH Dr. C. Otto - Automation 4.0

Automatisierung 4.0

Our 1600-tonne Laeis press, which has been in use for 15 years, has easily exceeded 4,000,000 press strokes and on 2 March 2017 it reached over 6000 working hours of automatic use as a “KUKA robot/press combo”. Praise goes to our press team under the direction of Hubert Wischnewski and Joachim Fischer.

Very good for Dr. C. Otto – supplier rating by Calderys


P-D Refractories GmbH Dr. C. Otto was rated by Calderys as an A-list supplier and awarded 95 points as an overall result.

P-D Refractories GmbH Dr. C. Otto – a contribution to integration!

Ein Beitrag zur Integration

Owing to the help and support of the Support Centre for Refugees and the Gisela Vogel Institute for Professional Education, on 23 January 2017 two Syrians were welcomed as trainees at the Dr. C. Otto site in Bochum.

During their three-week internship, full-time for Mr. Jawaad Toraani and part-time for Mr. Mohamad Alahmad, they gained an insight into our company and had the opportunity to get to know everyday working life in a production company.
The training period within the company was intended to extend and deepen their existing skills and knowledge or those acquired at the establishments of the initiative sponsors, through practical applications.
The trainees were accompanied during their internship by employees of the relevant departments and members of the works council, who are available as so-called mentors.

We would like to welcome Mr. Toraani and Mr. Alahmad and wish them a good and successful stay!

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Review ALUMINIUM 2016


ALUMINIUM 2016 was held in Düsseldorf from 29.11. to 2.12.2016, where 992 exhibitors from 58 countries were able to greet 24,748 trade visitors at the largest trade fair for this industry sector in the world.
ALUMINIUM 2016 was also a total success for P-D Refractories. The trade fair stand was well-attended and our new products, including  SiC-panels and Top Blocks, attracted significant interest among our customers.
Please follow the links for further information about the new products.