Friedhelm Loh Stiftung & Co. KG

About the Friedhelm Loh Group

The Friedhelm Loh Group is a mid-sized group of companies headquartered in Haiger (Hesse), whose parent company is Friedhelm Loh Stiftung & Co. KG. The group is entirely owned by the Loh family and comprises 95 subsidiaries with around 12,100 employees. Core manufacturing is the series production of enclosures, enclosure climate control, power distributions and IT infrastructure for data centres by Rittal – Rudolf Loh is regarded as the inventor of the series-produced enclosure available off the shelf. STAHLO, as an independent steel service centre, supplies slit strip, cut-to-size parts, standard formats, blanked parts and contours up to high- and ultra-high-strength grades from Dillenburg, Gera and Nordhausen, primarily to the automotive industry. LKH Kunststoffwerk Heiligenroth develops and produces plastic assemblies and components, including suspension components for the automotive industry, and operates in a CO₂-neutral manner. The value chain is complemented by EPLAN (CAE engineering software), CIDEON (CAD/CAM, PDM/PLM), German Edge Cloud and IoTOS. Customers include mechanical and plant engineering, the automotive and electrical industries, the renewable energy industry, the food and beverage industry, and the IT and communications sector.

Site

Haiger

Processes

Steel service: slit strip, cut-to-size parts, standard formats, blanked parts and contours, Manufacture of plastic assemblies and components, Manufacture of suspension components for the automotive industry, Manufacture of enclosures, enclosure climate control, power distributions and

Materials

Steel (incl. high- to ultra-high-strength grades), Plastic (plastic assemblies/components), Steel (Green Steel from Salzgitter from 2025), Steel, Steel (high-/ultra-high-strength), Steel (Green Steel from Salzgitter), Plastic

Certificates

ISO 9001, Training quality seal

Industries

Mechanical and plant engineering, Automotive industry, Electrical industry, Renewable energies, Food and beverage industry, IT and communications sector

1. 01

   Steel service (slit strip, cut-to-size parts, contours)

2. 02

   Sheet metal processing/forming

3. 03

   Enclosure and housing manufacturing

4. 04

   Plastic processing (assemblies, suspension components)

5. 05

   Assembly/system integration (power distribution, IT infrastructure)

6. 06

   Engineering software and digitalisation (EPLAN, CIDEON, Edge Cloud)

Materials and processes

Inside the production

Processes & technical limits

Quality and certifications

The group, with subsidiaries such as Rittal, is geared towards quality-centred series processes (e.g. digitally integrated manufacturing at the Haiger plant) and modern metrology (LKH); awards for the group include, among others, distinctions such as the Bosch Global Supplier Award for Rittal and the training quality seal. No specific certificates were stated in the sources.

History

1. 1947

   Founding of "Metallwarenfabrik Rudolf Loh" in Haiger (later Hailo)

2. 1961

   Founding of "Rudolf Loh, Elektrogerätebau GmbH" (later Rittal) in Rittershausen

3. 1971

   Death of Rudolf Loh; Irene and Joachim Loh take over the leadership; first Rittal subsidiary in Sweden

4. 1974

   Friedhelm Loh takes over the chairmanship of Rittal's management

5. 1982

   First foreign production (Rittal CSM, UK); founding of Stahlo and LKH

6. 1985

   Entry into the software business with a stake in Wiechers & Partner (today EPLAN)

7. 1987

   Start of the IT/data centre infrastructure business

8. 1998

   Founding of Loh Services; acquisition of Lampertz GmbH

9. 1999

   Wiechers & Partner becomes EPLAN Software & Service

10. 2010

    Lampertz brand discontinued (Rittal Hof)

11. 2013

    Acquisition of Cideon