
Group of ten surface treatment plants for anodizing and powder coating of metal and glass components in Germany.
Engel Oberflächentechnik GmbH
Pohlheim · Bochum · Hörstel · Aachen · Kreuztal · Stephanskirchen · Geesthacht · KurtscheidNew on Amplifa
About the Engel Group
Engel Oberflächentechnik GmbH is the holding company of the Engel Group, an association of ten surface treatment plants located in Pohlheim, Bochum, Hörstel, Aachen, Kreuztal, Stephanskirchen, Geesthacht and Kurtscheid. The companies of the group finish metal and glass components through anodic oxidation (anodizing) and powder coating. In the anodizing sector, natural, colored, hard-anodized and stainless-steel-effect surfaces are produced on aluminum; components up to a tank size of 8500 x 460 x 1500 mm can be processed, with a semi-automatic large-scale plant and a fully automatic small-parts plant available. The powder coating portfolio covers aluminum, bare steel, galvanized, coil-galvanized and hot-dip galvanized steel as well as large components and special sizes, complemented by mechanical and chemical pretreatment, blasting, zinc spray coating, decorative finishes in wood, stone or metal effects, and the coating and printing of glass using the thermo-sublimation process. As a special capability, the group offers the anodizing of hollow-chamber profiles and tubes with internal contacting. Customer industries include medical technology, automotive, façade construction, mechanical engineering, interior fitting as well as architectural metalwork and metal construction. The family-owned company is run by the third generation.
- Site
- Pohlheim
- Processes
- Anodizing (anodized finish, anodic oxidation), Pickling and anodizing, Grinding and anodizing, Colored anodizing (blue, red, green, black, gold, bronze tones), Hard anodizing, Anodizing with internal contacting of hollow-chamber profiles and tubes, Anodizing of aluminum in stainless-steel effect, Powder coating
- Materials
- Aluminum, Bare steel, Galvanized steel, Hot-dip galvanized steel, Coil-galvanized steel, Stainless steel, Glass
- Certificates
- ISO 9001:2015, DIN EN 1090-1/-2/-3 (IFO certification), DIN EN 1090 (IFO certification, ESP Kreuztal), DIN 55634-2 (IFO), DB AG approval DBS 918 340, DIN EN 16247 Energy management, QIB Qualitätsgemeinschaft Industriebeschichtung, Qualisteelcoat Quality Label, GSB International Approved Coater Aluminium Master / Master plus, Qualanod Quality Mark (sulfuric acid based anodizing), EN 9100:2018, ISO 50001:2018, ISO 9001:2015 (TÜV Süd), EN 1090, GSB Approved Coater, Qualanod
- Industries
- Medical technology, Automotive, Façade construction/Architecture, Mechanical engineering, Interior fitting, Architectural metalwork and metal construction
- 01
Consultation and order review
- 02
Mechanical pretreatment (grinding, brushing, polishing, blasting, sweeping)
- 03
Chemical pretreatment (degreasing, pickling, passivating, zinc spray coating)
- 04
Anodizing or powder coating
- 05
If applicable, dyeing, sealing, thermo-sublimation (decorative finishes, glass
- 06
Quality inspection
- 07
Packaging and logistics
Materials and Processes
Aluminum
Base material for anodizing, powder coating, decorative finishes and glass-printed applications, e.g. panel and perforated sheets as well as architectural profiles.
Bare steel
Powder coating for indoor and outdoor applications with conversion layer or zinc primer.
Galvanized steel
Pretreatment by chemical cleaning, pickling and conversion layer, if applicable with epoxy primer.
Hot-dip galvanized steel
Substrate for the EN 1090-certified corrosion protection process powder coating in a 2-layer system.
Coil-galvanized steel
Substrate with chemical pretreatment, verified up to stress category IV (C3-H, C4-H).
Stainless steel
Pickling and electropolishing of stainless steel components as a complementary surface service.
Glass
Powder coating and printing of glass with solid colors or freely selectable motifs using the thermo-sublimation process.
Engel Group Locations

Engel Oberflächentechnik, Pohlheim
DEPowder coating, headquarters
- Materials
- Aluminum, bare/galvanized/hot-dip galvanized steel
- Powder coating systems

Engel Eloxal, Pohlheim
DEAnodizing
- Materials
- Aluminum
- Anodizing large-scale plant, semi-automatic, tank 8500 x 460 x 1500 mm
- Anodizing small-parts plant, fully automatic, tank 4200 x 460 x 1500 mm
ESP Pulverbeschichtung, Bochum
DEPowder coating
- Materials
- Aluminum, steel
Kühl Eloxal, Bochum
DEAnodizing
- Materials
- Aluminum
ESP ROTEC, Hörstel
DEPowder coating
- Materials
- Aluminum, steel
Engel Pulverbeschichtung, Aachen
DEPowder coating
- Materials
- Aluminum, steel
ESP Pulverbeschichtung, Kreuztal
DEPowder coating
- Materials
- Aluminum, coil-galvanized steel, hot-dip galvanized and galvanized steel
ESP Südeloxal, Stephanskirchen
DEAnodizing and electroplating
- Materials
- Aluminum

Trio-Eloxal, Geesthacht
DEAnodizing and powder coating (Hamburg & Lotte)
- Materials
- Aluminum
- Anodizing plants with internal contacting of hollow-chamber profiles and tubes
ANCOA Oberflächenveredelung, Kurtscheid
DEAnodizing and powder coating
- Materials
- Aluminum, steel
Typical Components


Inside the production


Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Anodizing (anodized finish, anodic oxidation)Surface | – | 8500 mm × 460 mm × 1500 mm | – | – | Aluminum |
| Pickling and anodizingSurface | – | 8500 mm × 460 mm × 1500 mm | – | – | Aluminum |
| Grinding and anodizingSurface | – | – | – | – | Aluminum |
| Colored anodizing (blue, red, green, black, gold, bronze tones)Surface | – | 8500 mm × 460 mm × 1500 mm | – | – | Aluminum |
| Hard anodizingSurface | – | – | – | – | Aluminum |
| Anodizing with internal contacting of hollow-chamber profiles and tubesSurface | – | – | – | – | Aluminum |
| Anodizing of aluminum in stainless-steel effectSurface | – | – | – | – | Aluminum |
| Powder coatingSurface | – | – | – | – | Aluminum, Bare steel, Galvanized steel, Glass |
| Powder coating of large components and special sizesSurface | – | – | – | – | Aluminum, Steel |
| Wood-effect powder coating on aluminum and steel (decorative finish, thermo-sublimation process)Surface | – | – | – | – | Aluminum, Steel |
| Glass powder coating and printing (thermo-sublimation process, solid colors)Surface | – | – | – | – | Glass |
| Mechanical pretreatment: grinding, brushing, polishingSurface | – | – | – | – | Aluminum, Steel |
| Chemical pretreatment: degreasing, pickling, passivatingSurface | – | – | – | – | Aluminum, Steel |
| Blasting (sweeping, fine blasting, rough blasting)Surface | – | – | – | – | Aluminum, Steel |
| Zinc spray coatingSurface | – | – | – | – | Steel |
| Passivating of aluminumSurface | – | – | – | – | Aluminum |
| Stainless steel picklingSurface | – | – | – | – | Stainless steel |
| ElectropolishingSurface | – | – | – | – | Stainless steel |
| ElectroplatingSurface | – | – | – | – | – |
| Anti-graffiti coating (high-quality powder paints with high chemical and weather resistance)Surface | – | – | – | – | Aluminum, Steel |
2 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Anodizing large-scale plant, semi-automatic | – | – | Tank size 8500 x 460 x 1500 mm | – | Pohlheim |
| Anodizing small-parts plant, fully automatic | – | – | Tank size 4200 x 460 x 1500 mm | – | Pohlheim |
Additional services
Reference customers
Quality and Certifications
The group works with certified quality management systems (ISO 9001:2015, TÜV Süd), EN 1090 certifications from the IFO Institut für Oberflächentechnik as well as industry licenses such as GSB, Qualanod, QIB and Qualisteelcoat. Deutsche Bahn has approved the company in accordance with DBS 918 340; energy management according to DIN EN 16247 or ISO 50001:2018 (Trio-Eloxal) is in place.
| Evidence | Pohlheim | Bochum | Hörstel | Kreuztal | Geesthacht |
|---|---|---|---|---|---|
| ISO 9001:2015 (TÜV Süd) | |||||
| EN 1090 | |||||
| GSB Approved Coater | |||||
| Qualanod | |||||
| ISO 50001:2018 |
Company History
Founding of the family-owned company; the Engel Group is today run by the third generation.