Manufacturer of extruded HEL-X filling and growth bodies made of HDPE for biological wastewater treatment and aquaculture.
Christian Stöhr GmbH & Co. Elektro- und Kunststoffwaren KG
Marktrodach · ZeyernNew on Amplifa
About Christian Stöhr / HEL-X
Christian Stöhr GmbH & Co. Elektro- und Kunststoffwaren KG, now a family-run business in its third generation, develops and manufactures extruded filling and growth bodies of the HEL-X brand for biological wastewater treatment and gas treatment. The product range includes HEL-X filling bodies in diameters from 9 to 75 mm as well as the further developments Hel-X Flake, Hel-X Stangen and Hel-X Cluster. The products are used in biofilm processes (MBBR, IFAS, moving-bed and fluidized-bed biology), in aquaculture and ornamental fish breeding, as well as in biogas plants, gas scrubbers and exhaust air purification systems. Manufacturing is carried out exclusively according to the company's own processes from HDPE regranulate or HDPE granulate; product development and mechanical engineering are housed in the in-house research laboratory. The products are used worldwide in more than 2,500 plants. Locations are Marktrodach and Zeyern in Upper Franconia.
- Site
- Marktrodach
- Processes
- Manufacture of extruded HEL-X filling bodies (Hel-X filling bodies), Manufacture of Hel-X Flake (HEL-X Flake 30, HEL-X Flake PRO), Manufacture of Hel-X Stangen, Manufacture of Hel-X Cluster, Extrusion of filling bodies (extruded curlers/filigree rollers made of PE), In-house product development with mechanical engineering (research laboratory), _SERVICE_
- Materials
- HDPE Regranulate (black), HDPE Granulate (white or other colors), PE (Polyethylene, historical curlers), PE (Polyethylene)
- Certificates
- _CERTTYPE_, ISO 9001
- Founded
- 1925
- Industries
- Wastewater treatment, Aquaculture, Ornamental fish breeding, Biogas plants, Gas scrubbing and cooling, Exhaust air and exhaust gas purification
- 01
Product development in the in-house research laboratory including mechanical
- 02
Extrusion of the filling bodies according to the company's own processes
- 03
Quality inspection
- 04
Shipping
Materials and Processes
HDPE Regranulate (black)
Standard material for the extruded HEL-X filling bodies.
HDPE Granulate (white or other colors)
Granulate used on request for individual color requirements.
PE (Polyethylene)
Material of the historical extruded curlers and filigree rollers.
Locations
Marktrodach
DEMain plant, administration and production
- Materials
- HDPE
- Extrusion lines
Zeyern
DESecond plant for the production of filling bodies (opened 2009)
- Materials
- HDPE
- Extrusion lines
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Manufacture of extruded HEL-X filling bodies (Hel-X filling bodies)Plastics | – | – | – | – | HDPE Regranulate (black), HDPE Granulate (white, other colors possible) |
| Manufacture of Hel-X Flake (HEL-X Flake 30, HEL-X Flake PRO)Plastics | – | – | – | – | HDPE |
| Manufacture of Hel-X StangenPlastics | – | – | – | – | HDPE |
| Manufacture of Hel-X ClusterPlastics | – | – | – | – | HDPE |
| Extrusion of filling bodies (extruded curlers/filigree rollers made of PE)Plastics | – | – | – | – | PE |
| In-house product development with mechanical engineering (research laboratory)Engineering | – | – | – | – | – |
Additional services
Reference customers
Quality
The company is certified according to DIN EN ISO 9001:2015. All Hel-X products are manufactured in Germany according to the company's own quality and environmental standards.
| Evidence | Marktrodach |
|---|---|
| ISO 9001 |
Company History
- 1925
Founded by Christian Stöhr, manufacture of electrical and metal goods (including the first indicator call devices)
- 1939
Opening of the Zeyern/Marktrodach site
- 1950
Production of the first curlers
- 1954–1958
Development of the filigree rollers and extruded curlers made of PE
- 1972
Change of management to Arno Stöhr and Richard Stöhr
- 1984
Production of extruded HEL-X filling bodies
- 2007
Production of the first HEL-X Biochip
- 2009
Opening of a second plant for the production of filling bodies
- 2010
First visit to IFAT
- 2013
Change of management to Henry Stöhr and Michael Stöhr
- 2017
Production of the new HEL-X Flake
- 2019
Development of the HEL-X Flake 30
- 2021
Certification according to DIN EN ISO 9001:2015
- 2025
100th company anniversary