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Industrial Plant Maintenance Services - Christof Group


Nitric acid equipment, melamine reactors, polymer valves and piping – with APB, Christof Group provides top-quality critical process equipment for the chemical and petrochemical sectors. As specialist for welding high-alloyed steels, APB tackles the most complex challenges and toughest conditions, performing maintenance services and revamps on-site of industrial plants.
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Key Highlights

Industrial Plant Revamps - Christof Group
We deal with specifics
Christof Group’s specialist in the production of equipment for high-concentrated nitric acid and high-quality pressure vessels also counts among the leading manufacturers worldwide in the construction of critical melamine equipment.

DSC_5628_Hintergrund verlaengert
We distribute polymer
Using its intimate knowledge of critical processes, APB manufactures all special valves and high-pressure piping needed for polymer distribution. Crispy clean and smooth interior surfaces improve flow efficiency and prevent build-ups.
Industrial Plant Revamp - Christof Group
Energy and Syngas
When it comes to energy and ammonia synthesis, APB’s high-pressure piping is often the first choice. High-alloyed steels are processed into heavy-walled piping. Special fittings made of forgings are included.

High Pressure Piping_zugeschnitten
Ultra-high pressure
APB deals with special cases, such as high-pressure pipes up to 500 bar needed for polymer plants.


Less wear and tear and a longer life for equipment. APB has specialized in weld overlays and strip cladding of pressure parts made of nickel-based alloys as well as hardfacing of parts that are subject to wear and tear.
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Total equipment delivered:
More than 1,450
Total countries supplied:
Longest/Heaviest equipment constructed:
ø 4.5m, 42m long, weighing 240 tons
Shortest delivery time:
1h emergency call
Size of production area:
4,490 m²
Annual production hours:
50,000 h

Special materials handled

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apb Apparatebau Schweißtechnik GmbH
Gustav-Kramer-Strasse 5b, 8605 Kapfenberg, Austria
+43 3862 250250
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