Manufacturer of nuts and hot-formed parts with in-house heat treatment to AMS 2750.
Lippische Eisenindustrie GmbH
Detmold (DE) · Headquarters, production and salesNew on Amplifa
About Lippische Eisenindustrie GmbH
Lippische Eisenindustrie GmbH in Detmold has been producing nuts and hot-formed parts made of steel and stainless steels since 1917. The company specializes in the hot forming of hexagon nuts, wheel nuts, dome (klockner) nuts, lock nuts, flange nuts as well as drawing parts such as nut retainers, gas cylinder necks and threaded rings, in the size range from M12 to M64 or 1/2 to 2 1/4 inch according to DIN, ISO, EN, ASTM and ASME. The value chain includes in-house design and toolmaking, hot forming, internal heat treatment to AMS 2750 with temperature profile charts, precision finishing (doming) and coordination of external surface coatings such as electro-galvanized, hot-dip galvanized, zinc flake and zinc-nickel. With around 150 employees, the company, now in its fourth generation of family ownership, generates revenue of over 30 million euros. Customers come from wind energy, railway track construction, offshore, automotive, steel construction, the chemical industry and shipbuilding, including General Electric, Siemens, Enercon, Nordex and Deutsche Bahn AG. The Detmold plant has its own rail siding.
- Site
- Detmold
- Processes
- Hot forming (nuts and hot-formed parts), Nut production (hexagon nuts, wheel nuts, dome nuts, lock nuts, flange nuts etc.), Heat treatment (in-house heat treatment processes to AMS 2750, monitored and calibrated furnaces), Precision finishing (doming), In-house design and toolmaking, Surface coating (electro-galvanized, thick-layer passivation, hot-dip galvanized, zinc flake, Testing methods: dimensional tests, hardness tests, torque tests, proof load tests up to M64,, Design and in-house toolmaking
- Materials
- 20MnCr5 (1.7147), 21CrMoV5-7 (1.7709), 25CrMo4 (1.7218), 34CrMo4 (1.7220), 42CrMo4/SAE 4140 (1.7225), C15R (1.1140), C35E (1.1181), C45E (1.1191)
- Certificates
- DIN EN ISO 9001:2015, DIN EN ISO 50001:2018, EN 14399-1:2015 (HV nuts, FPC System 2+), EN 15048-1:2007 (construction products, FPC System 2+), PED 2014/68/EU / AD 2000-Merkblatt W0, Manufacturer-specific product qualification (HPQ) Deutsche Bahn AG, TL 889.0024, DNV-CP-0247 / DNV Approval of Manufacture – Hexagon Nuts (Bolts and Nuts), AMS 2750 (heat treatment process), ISO 9001:2015, ISO 50001:2018, EN 14399-1 (HV/HR nuts), EN 15048-1, AD 2000 W0 / PED 2014/68/EU, HPQ Deutsche Bahn AG, DNV (Hexagon Nuts), AMS 2750 (heat treatment)
- Founded
- 1917
- Employees
- approx. 150
- Industries
- Wind energy, Railway track construction, Offshore, Automotive, Steel construction, Chemical industry
- 01
Design and toolmaking
- 02
Hot forming
- 03
Heat treatment (AMS 2750)
- 04
Doming (precision finishing)
- 05
Surface coating (outsourced)
- 06
Quality inspection and documentation
- 07
Shipping (own rail siding)
Locations
Detmold
DEHeadquarters, production and sales
- Part weight / size
- M12–M64 (up to 2 1/4")
- Materials
- Steel, stainless steel A2/A4
- Heat treatment furnaces (AMS 2750, calibrated and monitored)
- Doming (precision finishing)
- Toolmaking
- own rail siding
Components
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Hot forming (nuts and hot-formed parts)Forming | – | – | – | – | 20MnCr5 (1.7147), 21CrMoV5-7 (1.7709), 25CrMo4 (1.7218), 34CrMo4 (1.7220), 42CrMo4/SAE 4140 (1.7225), C15R (1.1140), C35E (1.1181), C45E (1.1191), stainless A2 (1.4301), stainless A4 (1.4401) |
| Nut production (hexagon nuts, wheel nuts, dome nuts, lock nuts, flange nuts etc.)Forming | – | – | – | – | 20MnCr5 (1.7147), 21CrMoV5-7 (1.7709), 25CrMo4 (1.7218), 34CrMo4 (1.7220), 42CrMo4/SAE 4140 (1.7225), C15R (1.1140), C35E (1.1181), C45E (1.1191), stainless A2 (1.4301), stainless A4 (1.4401) |
| Heat treatment (in-house heat treatment processes to AMS 2750, monitored and calibrated furnaces)Heat treatment | – | – | – | – | – |
| Precision finishing (doming)Machining | – | – | – | – | – |
| In-house design and toolmakingEngineering | – | – | – | – | – |
| Surface coating (electro-galvanized, thick-layer passivation, hot-dip galvanized, zinc flakeSurface | – | – | – | – | – |
| Testing methods: dimensional tests, hardness tests, torque tests, proof load tests up to M64,Testing | – | – | – | – | – |
1 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Heat treatment furnaces (AMS 2750, calibrated and monitored) | – | – | – | – | Detmold |
Additional services
Reference customers
Quality and Approvals
During the ongoing production process, the nuts undergo dimensional, hardness and torque tests, proof load tests up to M64, impact, expansion and tensile tests as well as microstructure examinations and spectral analyses. Works certificates according to DIN EN 10204 (2.2, 3.1, 3.2 with TÜV/DNV), initial sample inspection reports per VDA (PPF/PPAP) and IMDS entries are possible.
| Evidence | Detmold |
|---|---|
| ISO 9001:2015 | |
| ISO 50001:2018 | |
| EN 14399-1 (HV/HR nuts) | |
| EN 15048-1 | |
| AD 2000 W0 / PED 2014/68/EU | |
| HPQ Deutsche Bahn AG | |
| DNV (Hexagon Nuts) | |
| AMS 2750 (heat treatment) |
Company History
- 1917
Foundation of the company
- 1956
Construction of production halls with owner's villa
- 1967
New construction of toolmaking with basement
- 1974
New construction of quality assurance hall
- 1984
Expansion of shipping halls with loading ramps
- 1990
New construction of the doming shop (precision finishing)
- 1992
Re-roofing of the production halls and introduction of the ISO 9001 quality management system
- 2007
Construction of an additional shipping hall
- 2021
Installation of photovoltaics on 90% of the roof area