Manufacture of heat exchangers, vessels, columns and custom designs in apparatus engineering for the chemical, petrochemical, environmental technology and plant engineering industries.
K. Ley GmbH & Co. KG
36132 EiterfeldNew on Amplifa
About K. Ley
K. Ley GmbH & Co. KG is a family business founded in 1954, headquartered in Eiterfeld (Hesse), which manufactures heat exchangers, vessels, columns and custom designs on a production area of approximately 6,000 m² for the chemical and petrochemical industry, environmental technology and plant engineering. The range of services includes the preparation of manufacturing drawings (SolidWorks, AutoCAD), strength calculations according to AD 2000, DIN EN 13445 and ASME Code Section VIII Div. 1, sheet metal processing, various welding processes (TIG, MIG/MAG, manual metal arc, submerged arc, orbital welding) on computer-controlled systems, internal pickling and passivation of chromium-nickel steels, sandblasting as well as CNC contract manufacturing with a HURON machining center NX 60 for workpieces up to 4,000 kg. Materials processed include stainless austenitic steels, duplex steels, ferritic steels and nickel-based alloys; apparatuses up to 5 m in diameter can be manufactured. The company is certified according to DIN EN ISO 9001:2015, AD 2000 HP0, ISO 3834-3 and Module A2 (2014/68/EU). Customers include, among others, BASF, Bayer, Evonik, Lanxess and Wacker Chemie; deliveries have also been made to the USA, Malaysia, Finland and other European countries.
- Site
- Eiterfeld
- Processes
- Apparatus engineering (heat exchangers, vessels, columns, custom designs), TIG welding (141), MAG welding (135/136), Manual metal arc welding (111), Submerged arc welding (121), Orbital welding (TIG tube welding), Drilling, Milling
- Materials
- Stainless austenitic steels, Austenitic-ferritic steels (duplex), Ferritic steels, Nickel-based alloys
- Certificates
- DIN EN ISO 9001:2015, AD 2000 data sheet HP0 / DIN EN 13445 / DIN EN ISO 3834-3, Module A2, Directive 2014/68/EU (pressure equipment Category II), Specialist company qualification under water law (§ 19 WHG), ASME certification, Ecovadis Sustainability Rating – Bronze Medal 2026 (Score 71), ISO 9001, AD 2000 HP0 / ISO 3834-3, Module A2 2014/68/EU (Category II), § 19 WHG certified specialist company
- Founded
- 1954
- Industries
- Chemical industry, Petrochemical industry, Environmental technology, Plant engineering, HVAC systems, Climatic/HVAC systems
- 01
Design and manufacturing drawings (SolidWorks, AutoCAD)
- 02
Calculations according to AD 2000, DIN EN 13445, ASME Code
- 03
Sheet metal processing
- 04
CNC machining (drilling, milling, interpolation turning)
- 05
Welding (TIG, MIG/MAG, manual metal arc, submerged arc, orbital welding)
- 06
Pickling, passivation, sandblasting
- 07
Quality assurance and testing
- 08
Shipping/logistics
- 09
Assembly
Locations
Eiterfeld
DEProduction, administration, manufacturing and assembly halls, pickling facility, warehouse (630 m²)
- Part weight / size
- Apparatuses up to 5 m diameter; CNC workpieces up to 4,000
- Materials
- Stainless austenitic and duplex steels, ferritic steels, nickel-based alloys
- CNC machining center HURON NX 60 (X 3200 / Y 2200 / Z 800 mm, max. 4,000 kg)
- Computer-controlled welding systems
- Tube welding machine
- TIG circumferential seam welding system
- Pickling and passivation facility for chromium-nickel steels
- Sandblasting system
Components
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Apparatus engineering (heat exchangers, vessels, columns, custom designs)Joining | – | Apparatuses with up to 5 m diameter | – | – | 1.4541, 1.4571, 1.4404, 1.4435, 1.4539, 1.4529, 1.4462, 1.4410, S235JR, P235GH, P265GH, P355GH, 2.4600, 2.4610, 2.4602, 2.4605 |
| TIG welding (141)Joining | – | – | – | – | Stainless austenitic steels, Austenitic-ferritic steels, Ferritic steels, Nickel-based alloys |
| MAG welding (135/136)Joining | – | – | – | – | Stainless austenitic steels, Austenitic-ferritic steels, Ferritic steels, Nickel-based alloys |
| Manual metal arc welding (111)Joining | – | – | – | – | Ferritic steels |
| Submerged arc welding (121)Joining | – | – | – | – | Ferritic steels |
| Orbital welding (TIG tube welding)Joining | – | – | – | – | Stainless austenitic steels |
| DrillingMachining | – | 3200 mm × 2200 mm × 800 mm | 4,000 kg | – | a wide variety of materials |
| MillingMachining | – | 3200 mm × 2200 mm × 800 mm | 4,000 kg | – | a wide variety of materials |
| Interpolation turning (center / off-center)Machining | – | 3200 mm × 2200 mm × 800 mm | 4,000 kg | – | a wide variety of materials |
| Pickling and passivation (in-house after welding process)Surface | – | – | – | – | Chromium-nickel steels |
| Sandblasting (surface pretreatment)Surface | – | – | – | – | ferritic steels, chromium-nickel steels |
| Sheet metal processingForming | – | – | – | – | Stainless austenitic steels, Ferritic steels |
| Preparation of manufacturing drawings (SolidWorks, AutoCAD)Engineering | – | – | – | – | – |
| Calculations according to AD 2000, DIN EN 13445, ASME Code Section VIII Div. 1, Nozzle Pro (FEM)Engineering | – | – | – | – | – |
| Radiographic testingTesting | – | – | – | – | – |
| Dye penetrant testingTesting | – | – | – | – | – |
| Ferrite determinationTesting | – | – | – | – | – |
| Air-Nekal leak testingTesting | – | – | – | – | – |
| Helium leak testingTesting | – | – | – | – | – |
| Hydrostatic pressure testingTesting | – | – | – | – | – |
| X-ray fluorescence testing of high-alloy materials (PMI)Testing | – | – | – | – | – |
| Ultrasonic wall thickness measurementTesting | – | – | – | – | – |
| Ultrasonic testingTesting | – | – | – | – | – |
6 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| CNC machining center | HURON NX 60 | 1 | X=3200 mm, Y=2200 mm, Z=800 mm; max. workpiece weight 4,000 kg | – | Eiterfeld |
| Computer-controlled welding system | – | – | – | – | Eiterfeld |
| Tube welding machine | – | – | – | – | Eiterfeld |
| TIG circumferential seam welding system | – | – | – | – | Eiterfeld |
| Pickling and passivation facility (for chromium-nickel steels) | – | 1 | – | – | Eiterfeld |
| Sandblasting system | – | 1 | – | – | Eiterfeld |
Additional services
Reference customers
Quality
Qualified personnel perform radiographic, dye penetrant, ultrasonic and ferrite determination tests; in addition, helium and air-Nekal leak tests, hydrostatic pressure tests as well as X-ray fluorescence testing (PMI) of high-alloy materials and ultrasonic wall thickness measurements are offered. The quality management system is certified according to DIN EN ISO 9001:2015 by TÜV Hessen.
| Evidence | Eiterfeld |
|---|---|
| ISO 9001 | |
| AD 2000 HP0 / ISO 3834-3 | |
| Module A2 2014/68/EU (Category II) | |
| ASME certification | |
| § 19 WHG certified specialist company |
History
- 1954
Founded as K. Ley & Co. KG in Eiterfeld with 6 employees; manufacture of apparatuses, jet devices and vacuum pumps
- 1955
Growth to 60 employees; construction of a new assembly hall
- 1960
120 employees
- 1962
Major orders for the German and Russian potash industry
- 1963
Assembly contract at the Jülich nuclear power plant
- 1966
Construction of further halls to expand the production area
- 1972
Further hall construction to expand the production area
- 1979
25th company anniversary
- 1986
Founder Karl Ley retires; taken over by Cornelia and Dr. Tilman Zöckler
- 1991
Construction of a larger assembly hall with a separate pickling facility (apparatuses up to 5 m diameter); introduction of a quality management system according to DIN 9002
- 2004
50th company anniversary
- 2011
ASME certification and major order in the USA
- 2012
New construction of a hall for final manufacturing
- 2014
60th company anniversary
- 2016
Conversion of building lighting to LED
- 2021
Installation of a combined heat and power unit and a photovoltaic system
- 2023
New construction of a warehouse (630 m²)
- 2024
70th company anniversary; transfer of the company to the next generation of the Zöckler family