Theißen Industrietechnik GmbH & Co. KG

From our headquarters in Ratingen and at our bases in Düsseldorf, Duisburg, Langenfeld and Essen, our experienced employees handle projects in mechanical engineering, steel construction and plant and plant maintenance. Our strength is close contact with our customers and our experience from more than 40 years years of industrial partnership. From the first discussion to the completion of an investment, this ensures reliable engineering and continuous processing of all necessary project phases.

Steel Construction

In industrial steel construction, we offer complete processing from planning, construction and production to assembly. The majority of our projects are custom-made.

We have production facilities in Germany (Duisburg, Düsseldorf) and in Eastern Europe (Braila, Romania). We are certified according to DIN EN 1090 for structures up to execution class (EXC) 3.

We often work in existing buildings and take into account connections, dismantling situations and modernization needs. We develop renovation concepts for infrastructure that is getting on in years.

We specialize in the modernization of cranes and crane runways as well as adjacent half-timbered structures.

Classic steel structures for the construction of new halls, retail, car dealerships, parking garages and public infrastructure are not our trade.
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for steel construction

We manufacture steel structures according to EN 1090 to EXC 3 according to customer drawings or our individual construction carried out for you in our works in Duisburg and in Braila, Romania.

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Materials:Structural steel (S235 / S355)
Surface treatment:Sandblasting, wet painting, powder coating, hot dip galvanizing, chrome plating
Welding tests:Visual Inspection (VT), Dye Penetrant Inspection (PT), Magnetic Particle Inspection (MT), X-ray (RT/DR)
Welding process:MIG (131/137/139) / MAG (135/136/138), arc welding (111), TIG / TIG (141), gas welding (311), submerged arc welding, robotic welding
Welding Certificates:EN 3834-2, EN 1090-2 EXC2, EN 1090-2 EXC3
Founding year:1973

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Number of employees: 50-99
Quality certificates:ISO 9001.
Languages:German, English

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