
Surface finishing: Anodizing and powder coating of aluminum and steel, also for over-lengths up to 18,000 mm.
trio-Eloxal GmbH & Co. KG
Geesthacht · LotteNew on Amplifa
About Trio-Eloxal
trio-Eloxal GmbH & Co. KG is a contract finishing company specializing in the technical surface finishing of aluminum and steel, headquartered in Geesthacht (Schleswig-Holstein). The scope of services includes anodizing (anodization) including hard anodizing, colored anodizing, and stainless steel look anodizing, powder coating of aluminum, raw and galvanized steel, glass coating, passivation, as well as chemical and mechanical pre-treatments such as degreasing, pickling, sanding, brushing, polishing, blasting, and microsatinization. A special strength is the handling of over-lengths: Components up to 18,000 mm long can be processed on the long anodizing and coating line, while the short line handles up to 7,850 mm (anodizing) or 6,000 mm (powder coating). Customers include architecture and façade construction, mechanical engineering, and medical technology, ranging from large façade components to the smallest medical instruments. Since 2021, there has been a partnership with the Engel Group from Pohlheim; additionally, the company offers internal contact treatment when anodizing hollow chamber profiles and tubes.
- Site
- Geesthacht
- Processes
- Anodizing (Anodization), Hard Anodizing / Hard Anodizing / Hard Coating / Hard Anodization, Pickling and Anodizing, Sanding and Anodizing, Colored Anodizing, Anodizing in Stainless Steel Look, Anodizing of Aluminum Panel and Perforated Sheets, Anodizing with Internal Contact Treatment (Hollow chamber profiles, tubes)
- Materials
- Aluminum (AL), Raw Steel, Galvanized Steel, Aluminum, Glass, Anodizing (Anodization), Hard Anodizing, Powder Coating
- Founded
- 1970
- Industries
- Architecture/Façade construction, Mechanical engineering, Medical technology, Industry
- 01
Chemical pretreatment (Degreasing, Pickling, Passivation)
- 02
Mechanical pretreatment (Sanding, Brushing, Polishing, Blasting, Sweeping)
- 03
Anodizing / Hard Anodizing / Spray Galvanizing / Hot Dip Galvanizing
- 04
Coloring and thickening / Powder Coating
- 05
Quality Assurance
- 06
Logistics
Materials and Processes
Aluminum
Finished through anodizing, hard anodizing, colored anodizing, passivation, and powder coating; also available for panel and perforated sheets as well as profiles up to 18,000 mm.
Raw Steel
Powder coated with chemical pretreatment and conversion coating for internal applications.
Galvanized Steel
Coated with tempering, priming (epoxy primer), and powder coating, as well as combined hot dip galvanizing and coating.
Glass
Coated within the scope of the offered glass coating process.
Anodizing (Anodization)
Anodic oxidation creates a 5 to 25 µm thick oxide layer with strong corrosion protection.
Hard Anodizing
Hard coating for particularly durable, abrasion-resistant aluminum surfaces.
Powder Coating
Solvent and heavy-metal-free process with a high color variety, including wood and stainless steel looks.
Internal Contact Treatment
Contact treatment inside hollow chamber profiles and tubes for seamless, continuous anodized surfaces.
Locations

Geesthacht
DEHeadquarters; Anodizing and Powder Coating
- Materials
- Aluminum, Raw Steel, Galvanized Steel
- Short Anodizing Line (up to 7,850 mm)
- Long Anodizing Line (up to 18,000 mm)
- Short Powder Coating Lines (up to 6,000 mm)
- Automatic and Manual Powder Coating Cabinets for Over-lengths (up to 18,000 mm)
- Warehouse approx. 1,400 m²
Lotte
DELotte Site
Hamburg
DEFoundational location (History)
Components


Inside the production


Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Anodizing (Anodization)Surface | – | 18.000 mm × 350 mm × 800 mm | – | – | Aluminum |
| Hard Anodizing / Hard Anodizing / Hard Coating / Hard AnodizationSurface | – | – | – | – | Aluminum |
| Pickling and AnodizingSurface | – | 18.000 mm × 350 mm × 800 mm | – | – | Aluminum |
| Sanding and AnodizingSurface | – | – | – | – | Aluminum |
| Colored AnodizingSurface | – | – | – | – | Aluminum |
| Anodizing in Stainless Steel LookSurface | – | – | – | – | Aluminum |
| Anodizing of Aluminum Panel and Perforated SheetsSurface | – | – | – | – | Aluminum |
| Anodizing with Internal Contact Treatment (Hollow chamber profiles, tubes)Surface | – | – | – | – | Aluminum |
| Chemical Pretreatment: DegreasingSurface | – | – | – | – | Aluminum |
| Chemical Pretreatment: PicklingSurface | – | – | – | – | Aluminum |
| Mechanical Pretreatment: SandingSurface | – | – | – | – | Aluminum |
| Mechanical Pretreatment: BrushingSurface | – | – | – | – | Aluminum |
| Mechanical Pretreatment: PolishingSurface | – | – | – | – | Aluminum |
| Microsatinization S6 + S8Surface | – | – | – | – | Aluminum |
| Powder CoatingSurface | – | 18.000 mm × 350 mm × 800 mm | – | – | Aluminum, Raw Steel, Galvanized Steel |
| Powder Coating in Wood Look (Aluminum)Surface | – | – | – | – | Aluminum |
| Mechanical Pretreatment for Powder Coating: BlastingSurface | – | – | – | – | Aluminum, Steel |
| Mechanical Pretreatment: SweepingSurface | – | – | – | – | Aluminum, Steel |
| Fine BlastingSurface | – | – | – | – | Aluminum, Steel |
| Grit BlastingSurface | – | – | – | – | Aluminum, Steel |
| Chemical Pretreatment for Powder Coating: DegreasingSurface | – | – | – | – | Aluminum, Steel |
| Chemical Pretreatment for Powder Coating: PassivationSurface | – | – | – | – | Aluminum, Steel |
| Spray GalvanizingSurface | – | – | – | – | Steel |
| Hot Dip Galvanizing and Powder CoatingSurface | – | – | – | – | Steel |
| Passivation of AluminumSurface | – | – | – | – | Aluminum |
| Glass CoatingSurface | – | – | – | – | Glass |
| Tempering / Priming of galvanized steel, Epoxy primingSurface | – | – | – | – | Galvanized Steel |
6 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Short Anodizing Line | – | – | up to 7.850 mm length | – | Geesthacht |
| Long Anodizing Line | – | – | up to 18.000 mm length | – | Geesthacht |
| Short Powder Coating Line | – | – | up to 6.000 mm length | – | Geesthacht |
| Automatic and Manual Powder Coating Lines | – | 3 | up to 6.000 mm | – | Geesthacht |
| Automatic and Manual Powder Coating Cabinet for Over-lengths | – | 1 | up to 18.000 mm | 1996 | Geesthacht |
| Warehouse | – | 1 | approx. 1400 m² ground area | 2014 | Geesthacht |
Additional services
History
- 1970
Founding of trio-Eloxal GmbH & Co. KG in Hamburg by Manfred Schauenburg, initially with 10 employees; technical finishing of aluminum.
- 1975
Relocation of the company headquarters to Geesthacht (Spandauer Strasse 35-37).
- 1978
Expansion of portfolio to over-lengths up to 18,000 mm; at this time the only company in Germany capable of anodizing up to these lengths.
- 1989
Acquisition of the adjacent industrial painting business; conversion of wet painting to modern powder coating with three automatic and manual systems up to 6,000 mm.
- 1996
Extension of powder coating with another automatic and manual cabinet for components up to 18,000 mm.
- 2008
Acquisition of majority stake by Ralf Schauenburg.
- 2011
Complete acquisition by Ralf Schauenburg.
- 2014
Construction of a warehouse with approx. 1,400 m² ground area.
- 2021
Partnership merger with Engel Group from Pohlheim (Hesse).