
Certified metal construction from Niederkassel: railings, stairs, gates, structural steelwork and custom constructions in steel, sheet metal and aluminium – including assembly.

Metall & Industrieanlagenbau Guido Graumann GmbH
NiederkasselNew on Amplifa
About us
Metall & Industrieanlagenbau Guido Graumann GmbH from Niederkassel is a medium-sized metal construction company with more than 30 years of experience. The company manufactures, supplies and installs custom fabrications in steel, sheet metal and aluminium – including railings for indoor and outdoor areas, steel stairs, access and escape ladders with access and exit platforms, industrial building elements such as gates, doors and windows with or without drives, as well as gate and fence systems. Further service areas include custom constructions in steel and sheet metal, facade cladding including substructures made of aluminium, steel and KS pressed boards, connecting profiles, ramp plates, balcony extensions, canopies and roofing structures, as well as the supply of balcony solar systems. Since 01.08.2023, the company has been certified under DIN EN 1090 as a certified metal construction company and certified welding business. An on-site appointment and measuring service also captures unclear implementation requirements and offers customized solutions.
- Site
- Niederkassel
- Processes
- Manufacturing, delivery and installation of steel railings (indoor and outdoor areas), Manufacturing of steel stairs, access and escape ladders optionally with access and exit platforms, Custom constructions in steel and sheet metal versions, Industrial building elements such as gates, doors, windows etc. with and without drives, Facade cladding including substructures, Connecting profiles and ramp plates, Welding work (certified welding business under DIN EN 1090), Balcony extensions
- Materials
- Steel, Sheet metal (steel/sheet metal version), Aluminium, KS pressed boards, Sheet steel
- Certificates
- DIN EN 1090 (Certified metal construction company), Certified welding business (DIN EN 1090), DIN EN 1090 – Certified metal construction company, DIN EN 1090 – Certified welding business, ISO 9001
- Industries
- Construction, Structural steelwork, Facade construction, Industrial plant engineering, Metal construction
- 01
On-site measuring service including quote preparation
- 02
Design/custom constructions in steel and sheet metal
- 03
Machining/production of steel and sheet metal parts (steel and sheet metal
- 04
Joining by welding (certified welding business under DIN EN 1090)
- 05
Final assembly or on-site installation
- 06
Delivery to the site/customer
Materials and processes
Steel
Steel forms the basis for railings, stairs, ladders, gates, custom constructions and structural steelwork.
Sheet steel
Sheet metal versions are used for custom constructions, connecting profiles and ramp plates.
Aluminium
Aluminium is used for facade cladding and associated substructures.
KS pressed boards
KS pressed boards are used as a material for facade cladding.
Locations

Manufacturing, delivery, installation
Components














Inside the production







Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Manufacturing, delivery and installation of steel railings (indoor and outdoor areas)Assembly | – | – | – | – | Steel |
| Manufacturing of steel stairs, access and escape ladders optionally with access and exit platformsAssembly | – | – | – | – | Steel |
| Custom constructions in steel and sheet metal versionsAssembly | – | – | – | – | Steel, Sheet metal |
| Industrial building elements such as gates, doors, windows etc. with and without drivesAssembly | – | – | – | – | – |
| Facade cladding including substructuresAssembly | – | – | – | – | Aluminium, Steel, KS pressed boards |
| Connecting profiles and ramp platesAssembly | – | – | – | – | Steel, Sheet metal |
| Welding work (certified welding business under DIN EN 1090)Joining | – | – | – | – | Steel |
| Balcony extensionsAssembly | – | – | – | – | Steel |
| Balcony power plant solar systems (scope of supply: 2 x PV module of 410 W each, mounting bracket,Assembly | – | – | – | – | – |
| Canopies and roofing structuresAssembly | – | – | – | – | – |
| Gate and fence systemsAssembly | – | – | – | – | Steel |
Additional services
Quality
Since 01.08.2023, the company has been certified under DIN EN 1090 as a certified metal construction company and as a certified welding business.
| Evidence | Niederkassel |
|---|---|
| DIN EN 1090 – Certified metal construction company | |
| DIN EN 1090 – Certified welding business | |
| ISO 9001 |
History
More than 30 years of experience in metal construction
- 2023
Certification under DIN EN 1090 as a certified metal construction company and as a certified welding business (since 01.08.2023)