Plant engineering, vessel and apparatus construction, piping and industrial technology from Hamburg – full service for industrial plants
KLIEWE GmbH
Hamburg (Flagentwiet 42) · Hamburg (Billbrookdeich) · Hamburg-Finkenwerder · Stade · Bremen · Schacht-Audorf · Flensburg/HandewittNew on Amplifa
About Kliewe
KLIEWE GmbH is a full-service partner for industrial plants and systems headquartered in Hamburg-Schnelsen. Founded in 1959 by master coppersmith Bruno Kliewe, the family-owned company manufactures and installs skid-mounted systems, pressure and storage tanks, mixing and process vessels, piping systems, pipe bridges as well as structural steel and special constructions. The value chain covers engineering with 3D design and 3D scanning, in-house manufacturing including CNC-controlled pipe pre-fabrication lines, welding processes such as orbital, TIG, MIG and MAG, electrical instrumentation and control (E-MSR) technology, control cabinet construction, pressure tests and non-destructive testing, as well as installation, commissioning and maintenance. Materials processed include austenitic, ferritic and austenitic-ferritic steels, copper, copper-nickel, nickel-based and aluminium alloys. Customers come from pharmaceuticals, food and beverages, chemicals, energy, aerospace, yacht and marine construction and research – references include European XFEL (DESY), Desitin and SCA in Mainz. With around 480 employees and seven locations in northern Germany, Kliewe brings together more than 20 disciplines under one roof.
- Site
- Hamburg
- Processes
- Plant Engineering, Vessel and Apparatus Construction, Piping Construction, Energy and Utility Systems, Metal and Steel Construction, Electrical Engineering and Automation, Welding Technology, Pigging Technology
- Materials
- Piping material (not further specified), Sheet material (not further specified), Austenitic, ferritic and austenitic-ferritic steels, Copper, Copper-nickel, Nickel-based alloys, Aluminium alloys, Structural and sheet steel
- Certificates
- DIN EN ISO 9001:2015, DIN EN ISO 45001:2023, DIN EN ISO 3834-2, AD 2000, DIN EN 1090 (factory production control), DIN 2303 (manufacturer qualification for defence technology products, Q2 BK1), Production Control Module A2 (2014/68/EU), WHG § 62 AwSV certified specialist company, DVGW certified specialist company district heating (AGFW FW 601), KTA 1401 quality assurance for nuclear facilities, §6 ChemKlimaschutzV operator certification (refrigeration/air conditioning, §13b HmbAbwG specialist company property drainage, §15 HmbAbwG (separator systems), ISO 9001:2015, ISO 45001:2023, EN 1090 (FPC), Module A2 (2014/68/EU), DIN 2303 Q2 BK1, KTA 1401, DVGW district heating (AGFW FW 601), WHG § 62 AwSV
- Founded
- 1959
- Employees
- 480+
- Industries
- Food and Beverages, Pharmaceuticals and Cosmetics, Chemicals and Petrochemicals, Energy, Aerospace, Yacht and Marine
- 01
Planning & Project Management
- 02
Engineering & Design (3D, 3D Scanning, Eplan)
- 03
Vessel and Apparatus Manufacturing
- 04
CNC-Controlled Pipe Pre-Fabrication
- 05
Welding Technology
- 06
Metal and Steel Construction
- 07
Electrical Engineering, Control Cabinet Construction, E-MSR
- 08
Pressure Tests, Visual Inspections, Endoscopy, DP & NDT
- 09
Documentation & Acceptance
- 10
On-Site Installation
- 11
Maintenance & Servicing
Materials and Processes
Austenitic, ferritic and austenitic-ferritic steels
Stainless and duplex steels for vessels, tanks and piping including hygienic designs to EHEDG standard.
Copper
Material with historical roots in the coppersmith trade; used in piping and apparatus construction.
Copper-nickel
Alloy for corrosion-exposed piping and marine applications.
Nickel-based alloys
For plant components under high chemical and thermal loads.
Aluminium alloys
Lightweight constructions and custom fabrications in apparatus and steel construction.
Structural and sheet steel
Structural steel construction, pipe bridges, platforms, beam and hopper constructions.
Locations
Hamburg-Schnelsen (Flagentwiet 42)
DECompany headquarters with 3.000 m² production facility
- Materials
- Stainless steels, copper-nickel, nickel-based alloys, aluminium
- CNC-controlled pipe pre-fabrication line
- Automated mandrel bending machines
- Necking machines
- Waterjet cutting
Hamburg-Billbrookdeich
DEService location for electrical engineering, control cabinet construction, E-MSR
Hamburg-Finkenwerder (Neßpril 1)
DEService location, especially in the aerospace environment
Stade
DEService location
Bremen
DEService location (Airbus-Allee 14)
Schacht-Audorf
DEService location
Flensburg/Handewitt (Werkstraße 6)
DEService location for the pharmaceutical and food industries
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Plant EngineeringEngineering | – | – | – | – | – |
| Vessel and Apparatus ConstructionAssembly | – | – | – | – | – |
| Piping ConstructionAssembly | – | – | – | – | – |
| Energy and Utility SystemsEngineering | – | – | – | – | – |
| Metal and Steel ConstructionAssembly | – | – | – | – | – |
| Electrical Engineering and AutomationEngineering | – | – | – | – | – |
| Welding TechnologyJoining | – | – | – | – | – |
| Pigging TechnologyAssembly | – | – | – | – | – |
| Hose TechnologyAssembly | – | – | – | – | – |
| Structural Steel ConstructionAssembly | – | – | – | – | – |
| Waterjet CuttingMachining | – | – | – | – | – |
| Special ConstructionsAssembly | – | – | – | – | – |
| Sheet Metal WorkingForming | – | – | – | – | – |
| Plumbing, Heating and Air Conditioning (HVAC)Assembly | – | – | – | – | – |
| Water and Wastewater TechnologyEngineering | – | – | – | – | – |
| Combustion TechnologyAssembly | – | – | – | – | – |
| Ventilation TechnologyAssembly | – | – | – | – | – |
| Heating and Boiler TechnologyAssembly | – | – | – | – | – |
| Compressed Air TechnologyAssembly | – | – | – | – | – |
| Cooling and Refrigeration TechnologyAssembly | – | – | – | – | – |
| HydraulicsAssembly | – | – | – | – | – |
| Pump and Motor ServiceAssembly | – | – | – | – | – |
| Automation TechnologyEngineering | – | – | – | – | – |
| Instrumentation and Control Technology (MSR)Engineering | – | – | – | – | – |
| PLC & Process Control TechnologyEngineering | – | – | – | – | – |
| Circuit Diagram Creation & DesignEngineering | – | – | – | – | – |
| Electrical Equipment Testing (DGUV 3)Testing | – | – | – | – | – |
| Control Cabinet ConstructionAssembly | – | – | – | – | – |
| Industrial Media SupplyAssembly | – | – | – | – | – |
Additional services
Reference customers
Quality and Certifications
All work steps are organised and certified according to clear standards; testing includes pressure tests, visual inspections, endoscopic inspections and non-destructive testing (DP & NDT) by in-house specialist personnel, including standard-compliant acceptances and batch-based documentation.
| Evidence | Hamburg-Schnelsen |
|---|---|
| ISO 9001:2015 | |
| ISO 45001:2023 | |
| EN 1090 (FPC) | |
| DIN EN ISO 3834-2 | |
| AD 2000 | |
| Module A2 (2014/68/EU) | |
| DIN 2303 Q2 BK1 | |
| KTA 1401 | |
| DVGW district heating (AGFW FW 601) | |
| WHG § 62 AwSV |
History
- 1959
Founded by master coppersmith Bruno Kliewe in Hamburg-Lokstedt; first apprentice trained in the founding year.
- 1962
Günter Kliewe takes over management; customer base in shipbuilding, beverage and food industries.
- 1970er
Relocation to Hamburg-Niendorf (700 m²); establishment of vessel and apparatus construction; certification as an industrial partner.
- 1984
25th company anniversary; Kliewe is established in plant and apparatus construction.
- 2002
Thomas Kliewe takes over management in the third generation; growth in petrochemicals and aerospace.
- 2008
Entry into mega-yacht construction.
- 2011–2015
Pipe pre-fabrication in Rendsburg; founding of Keypro Engineering GmbH; 2014 move to the 3.000-m² production facility in Hamburg-Schnelsen; 2015 Flensburg-Handewitt location.
- 2016
Realisation of the cooling system for the European XFEL (DESY) and a water treatment plant with ultrafiltration for SCA in Mainz (350 m³/h).
- 2017–2020
New production halls and service department; introduction of SAP Business One; more than 400 employees; entry into district heating.
- 2023
Establishment of the hydraulics department; focus on heat pumps, photovoltaics and an electric vehicle fleet.
- 2024
Benjamin Schütze becomes second managing director; new Hamburg-Billbrookdeich location for electrical engineering, control cabinet construction and E-MSR.