Plant construction and industrial services: piping, shutdown work, maintenance, boiler revisions and industrial installations
J. Christof Gesellschaft m.b.H.
Graz (headquarters) · Gratkorn (workshop) · Alzenau, DE · Maribor, SI · Belgrade, RS · Moscow, RU · Slavonski Brod, HR · Valletta, MTNew on Amplifa
About J. Christof
J. Christof Gesellschaft m.b.H. (JCH) is an Austrian plant constructor and industrial service provider headquartered in Graz with its company site in Gratkorn. The company builds and maintains industrial plants: core services are piping construction including prefabrication, detail engineering and installation in all material classes and nominal sizes, shutdown work and shutdown management, mechanical maintenance, boiler revisions as well as turnkey industrial installations with steel construction, silos and heavy lifting. Production and installation are predominantly in steel of various material grades, including fusion and orbital welding processes according to ISO 3834-2. Customers come from the building materials industry, iron and steel, energy and environment, food industry, oil and gas, paper, pulp and wood industry as well as pharmaceuticals and medical technology, including OMV, MiRO, NIS-Gazprom, Baumit and Egger. Through subsidiaries, the group is represented in Slovenia (Maribor, central prefabrication), Germany (Alzenau), Serbia (Belgrade), Croatia (Slavonski Brod), Malta and Russia.
- Site
- Graz
- Processes
- Piping construction (prefabrication, installation, pipework), Piping installation / pipe fitting work, Fusion welding (weld seams, ISO 3834-2), Orbital welding (special welding process), Mechanical maintenance (servicing, preventive maintenance, repairs), Shutdown work / shutdown management / turnaround, Vessel repairs, Piping repairs
- Materials
- Steel (various material grades), Piping in all material classes, Iron and steel (industry focus), High-pressure piping, Fusion welding including orbital welding
- Certificates
- ISO 9001:2015, ISO 14001:2015, SCCP – Safety Certificate Contractors Petrochemicals, Certified specialist company under WHG (Water Resources Act), ISO 3834-2, EN 1090 EXC 3 (steel load-bearing structures), EN 1090 EXC 3 (welding certificate), AD 2000-HP 0, Pressure Equipment Act § 51 (repairs and modifications), SCP – Safety Certificate for Personnel Service Providers, ISO 9001, ISO 14001, EN 1090
- Founded
- 1988
- Industries
- Building materials, Iron and steel, Energy and environment, Food industry, Oil and gas / petrochemicals, Paper, pulp and wood industry
- 01
Engineering (feasibility studies, detail engineering, isometrics)
- 02
Prefabrication (in workshop or on site, database-backed weld documentation)
- 03
Welding and fabrication
- 04
Installation / industrial installation / plant construction
- 05
Quality assurance (pressure tests, inspection documentation
- 06
Commissioning support
- 07
Maintenance and service
Materials and Processes
Steel (various material grades)
Main material for piping, steel structures, silos and vessels in all material classes.
High-pressure piping
Complete piping construction for high-pressure applications in the boiler and power plant sector.
Fusion welding including orbital welding
Certified welding processes for quality-tested weld seams on piping and equipment.
Locations
Graz
ATCompany headquarters (JCH, JCM, RIA)
Gratkorn
ATCompany site / workshop
Alzenau
DESite of J. Christof Anlagenbau GmbH (JCDA), management and execution of shutdowns
Maribor
SIJCH-Slo d.o.o., central prefabrication facility
- Part weight / size
- Pipe bends up to approx. 10 t, Ø 2.5 m
- Materials
- Steel
Belgrade
RSJ. Christof d.o.o. Beograd (JCS), base for North Africa and the Middle East
Slavonski Brod
HRDuro Daković Montaza Consulting d.o.o. (DDMC)
Valletta
MTJ. Christof Malta Limited (JCM)
Services and Components
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Piping construction (prefabrication, installation, pipework)Joining | – | – | 750 t piping (project) | – | all material classes |
| Piping installation / pipe fitting workAssembly | – | – | – | – | – |
| Fusion welding (weld seams, ISO 3834-2)Joining | – | – | – | – | – |
| Orbital welding (special welding process)Joining | – | – | – | – | – |
| Mechanical maintenance (servicing, preventive maintenance, repairs)Assembly | – | – | – | – | – |
| Shutdown work / shutdown management / turnaroundAssembly | – | – | 215 plant components (Pancevo project) | – | – |
| Vessel repairsAssembly | – | – | – | – | – |
| Piping repairsJoining | – | – | – | – | – |
| Tank repairsAssembly | – | – | – | – | – |
| Boiler revisions / boiler service / boiler installationAssembly | – | – | – | – | – |
| Complete high-pressure piping constructionJoining | – | – | – | – | – |
| Industrial installations / plant construction (turnkey)Assembly | – | – | – | – | – |
| Plant dismantling / disassembly / plant transferAssembly | – | – | – | – | – |
| Heavy lifting, lifting concepts and crane studiesAssembly | – | – | – | – | – |
| Steel construction (supply and installation of steel structures, EN 1090 EXC 3)Assembly | – | – | – | – | Steel |
| Silos supply, installation and claddingAssembly | – | – | – | – | Steel |
| Pressure tests / press circuit planningTesting | – | – | – | – | – |
| Detail engineering / feasibility studies / installation conceptsEngineering | – | – | – | – | – |
| Isometrics / isometric preparation (spooling, database-backed)Engineering | – | – | – | – | – |
| Maintenance and servicing of rotating plant components / machineryAssembly | – | – | – | – | – |
| Installation and retrofit of rollers, drying equipment, pulper systems (paper industry)Assembly | – | – | – | – | – |
| Insulation of piping and refrigeration linesAssembly | – | – | – | – | – |
| Prefabrication of piping (workshop or on site)Joining | – | 2.5 m diameter / 15 m height | approx. 10 t (pipe bends) | – | – |
| E&I and valve serviceAssembly | – | – | – | – | – |
| Midstream oilfield servicesAssembly | – | – | – | – | – |
1 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| 500 t all-terrain telescopic crane (project equipment) | – | – | – | – | Jura-Cement, Wildegg (project) |
Additional services
Reference customers
Quality and Certificates
J.Christof operates with certified quality and environmental management systems (ISO 9001:2015, ISO 14001:2015), database-backed weld documentation and pressure tests including press circuit planning. Further certificates include ISO 3834-2, EN 1090 EXC 3, AD 2000-HP 0, SCCP, WHG and DGRL § 51.
| Evidence | Graz | Gratkorn | Alzenau | Maribor |
|---|---|---|---|---|
| ISO 9001 | ||||
| ISO 14001 | ||||
| ISO 3834-2 | ||||
| EN 1090 |
History
- 1966
Original founding of the company IRB Industrie-Rohrbau by Johann Christof sen.
- 1988
Founding of JCH, J. Christof GmbH
- 1996
Founding of the staffing agency RIA Rohr- und Industrieanlagenbau GmbH
- 2003
Founding of Christof Holding AG
- 2011
Founding of JCS, J. Christof d.o.o. Beograd, base for North Africa and the Middle East
- 2016
Founding of JCDA, J. Christof Anlagenbau GmbH, Alzenau
- 2017
Founding of JCH-Slo d.o.o., central prefabrication facility in Maribor; spin-off of JCH from the Christof Group, founding of the independent group 'J.Christof'
- 2018
Bundling of plant construction and industrial service competencies in J.Christof; founding of OOO J. Christof RU in Moscow