Industrial piping construction, plant engineering and industrial services for the process industries from a single source
Weber Unternehmensgruppe GmbH & Co. KG
Pulheim · Merseburg · Stammham · Bobenheim-Roxheim · Ludwigshafen · Marl · Berlin · Offenbach/Queich · Schwedt/Oder · Burghausen · Gendorf · Bitterfeld-Wolfen · Antwerpen · MariborNew on Amplifa
Performance and Partnership – Quality Welds Us Together
The Weber Corporate Group is a family business founded in 1922, now in its fourth generation, with around 2,350 employees and revenue of approximately EUR 420 million (2025). Its core competence is industrial piping construction and plant engineering for the process industries, complemented by engineering, EnergyService, nuclear technology including nuclear decommissioning, scaffolding and industrial coating. In mechanical pipe prefabrication workshops in Pulheim, Merseburg, Ludwigshafen and Marl, more than 200,000 working hours are performed annually and 1,500 tonnes of pipes and semi-finished products are processed; the welders produce around 800,000 weld seams and install more than 800,000 m of pipe per year. Fabrication and installation are carried out in steel and stainless steel in all nominal sizes as well as in plastics such as PE, PP, PVC, PVDF and GRP composites, including for GMP/FDA-compliant piping using TIG orbital welding. Customers include companies from the chemical, petrochemical, refinery, power plant, pharmaceutical and food industries such as BASF, Bayer, Covestro, Dow, Evonik and Linde. The headquarters are located in Pulheim near Cologne; further sites are in Germany, Belgium and Slovenia.
- Site
- Pulheim
- Processes
- Industrial piping construction (piping installation, pipe prefabrication), Mechanised pipe prefabrication, Heavy and fine installation (vessels, columns, machines), Valve service (repair, decontamination, acceptance testing), Plastics processing (thermoplastics, duoplasts, composites), GMP/FDA piping, TIG orbital welding, Component and special parts manufacturing (individual components in small batch sizes), Dust extraction technology and filter service
- Materials
- Steel, Stainless steel, Tool steel, PE (polyethylene), PP (polypropylene), PVC, PVDF, PFA
- Certificates
- EcoVadis Silver (79 points, 92nd percentile), EcoVadis Silver (79 points)
- Founded
- 1922
- Employees
- 2,350
- Industries
- Chemical/petrochemical, Refineries, Power plants, Pharmaceuticals, Food, Metals industry
- 01
Engineering and 3D plant planning
- 02
Mechanised pipe prefabrication (steel, stainless steel, plastics)
- 03
Welding incl. TIG orbital welding
- 04
Pressure testing and quality documentation
- 05
Industrial coating / phosphating
- 06
Piping, heavy and fine installation
- 07
Turnaround and maintenance services
- 08
Plant support and servicing
Materials and Processes
Steel
Basis for piping, special steel construction, flue gas ducts and nuclear technology components.
Stainless steel
Piping installation in all nominal sizes, among other things for water, wastewater and environmental technology.
PE (polyethylene)
Thermoplastic piping construction incl. PE/GRP composite constructions.
PP (polypropylene)
Processing with approvals in accordance with AD-2000, DGRL and DVS 2212.
PVC
Thermoplastic for plant piping in the chemical process industries.
PVDF
Chemical-resistant thermoplastic for demanding applications, also as PVDF/GRP.
PFA
Highly resistant plastic for PFA/GRP composite piping.
Glass-fibre-reinforced polyester resins
Duoplasts for corrosion-resistant piping and plant components.
Vinyl ester resins
Glass-fibre-reinforced duoplasts for chemically stressed plant systems.
Epoxy resins
Glass-fibre-reinforced resins for composite material applications.
Areas of Service
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Industrial piping construction (piping installation, pipe prefabrication)Assembly | – | – | – | – | Steel, Stainless steel |
| Mechanised pipe prefabricationAssembly | – | – | – | – | Steel, Stainless steel |
| Heavy and fine installation (vessels, columns, machines)Assembly | – | – | – | – | – |
| Valve service (repair, decontamination, acceptance testing)Assembly | – | – | – | – | – |
| Plastics processing (thermoplastics, duoplasts, composites)Plastics | – | – | – | – | PE, PP, PVC, PVDF, Glass-fibre-reinforced polyester resins, Vinyl ester resins, Epoxy resins, PP/GRP, PE/GRP, PVC/GRP, PVDF/GRP, PFA/GRP |
| GMP/FDA piping, TIG orbital weldingJoining | – | – | – | – | – |
| Component and special parts manufacturing (individual components in small batch sizes)Assembly | – | – | – | – | – |
| Dust extraction technology and filter serviceAssembly | – | – | – | – | – |
| Boiler overhaul (header fabrication, replacement of heat exchanger bundles, membrane walls)Assembly | – | – | – | – | – |
| Heat exchanger construction (repair, retubing, new construction)Assembly | – | – | – | – | – |
| Special steel constructionMachining | – | – | – | – | Steel |
| Manufacture of internally insulated flue gas ductsAssembly | – | – | – | – | – |
| Manufacture of skid systems (pipe racks incl. piping, cabling, steel construction, painting)Assembly | – | – | – | – | – |
| Special welding constructions (assessment and repair of welded components)Joining | – | – | – | – | – |
| Pipe bending (CNC bending machine)Forming | – | – | – | DN8 – DN100 | Wide range of materials |
| Phosphating (preservation of components)Surface | – | 7.0 m × 2.0 m × 1.5 m | – | – | Metal |
| Saw cuts of pipes, profiles and solid materials (metal band saw)Machining | – | – | – | – | Steel, Stainless steels, Tool steels |
| Pressure testing with water and gas (pressure decay check)Testing | – | – | – | – | – |
| Repair and overhaul of turbine, pump and fan systemsAssembly | – | – | – | – | – |
| Installation of steel and stainless steel piping in all nominal sizesAssembly | – | – | – | – | Steel, Stainless steel |
| 3D plant planning, laser scanning, fabrication isometricsEngineering | Accuracy up to 2 mm | – | – | – | – |
| Engineering: mechanical engineering, process engineering, electrical/instrumentation/control, plantEngineering | – | – | – | – | – |
| EPC heat projects (turnkey boiler, turbine and heat pump systems)Engineering | – | – | – | – | – |
| 3D modelling and plant documentation (E3D, S3D, Revit)Engineering | – | – | – | – | – |
| Nuclear technology: supply and installation of components for nuclear power plants, decommissioningAssembly | – | – | – | – | Steel |
| Industrial coating (corrosion protection)Surface | – | – | – | – | – |
| Scaffolding (industrial, special, suspended, façade and mobile scaffolds)Assembly | – | – | – | – | – |
4 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| CNC bending machine (pipe bending machine) | – | – | Pipe bending work between DN8 and DN100, bending radius 2.5 x diameter | – | Berlin |
| Fully automatic two-column horizontal metal band saw with APR system | – | – | – | – | Berlin |
| Phosphating tank | – | 1 | 7.0 m x 2.0 m x 1.5 m | – | Berlin |
| Mechanical pipe prefabrication workshop | – | – | 1,500 tonnes of pipes and semi-finished products/year, over 200,000 hours/year | – | Pulheim, Merseburg, Ludwigshafen, Marl |
Additional services
Quality and Sustainability
Quality and occupational safety are safeguarded by around 50,000 training hours annually; pressure tests are carried out with water up to 420 bar and helium up to 35 bar, and GMP/FDA-compliant piping is welded with complete documentation. Sustainability performance is certified with EcoVadis Silver (79 points, 92nd percentile).
| Evidence | Pulheim |
|---|---|
| EcoVadis Silver (79 points) |