
Master craftsman business in steel and metal construction: custom-made windows, doors, gates, grilles, canopies and fire protection systems from Düsseldorf.
J. Schiefer Stahl- u. Metallbau GmbH & Co. KG
DüsseldorfNew on Amplifa
About J. Schiefer Stahl- und Metallbau
J. Schiefer Stahl- u. Metallbau GmbH & Co. KG is a traditional master craftsman and training business in Düsseldorf that has existed since 1932, with origins as a smithy and locksmith shop reaching further back. The family-owned company manufactures and installs custom-made windows and doors made of plastic and aluminium, gates and fences, scissor and roller grilles, canopies as well as fire and smoke protection doors and gates including hold-open systems. In addition, the range of services includes structural steelwork such as railings, handrails, fall protection, stairs and racking constructions, burglary protection, Düsseldorf refuse chutes as well as repairs and maintenance. Work is carried out mainly with steel, aluminium and plastic, using products from renowned manufacturers such as Schüco, GEZE, Dorma and Assa Abloy. Customers are private clients, property management companies and businesses, including references such as Unitymedia, NRW Bank and Strabag. From on-site measurement through planning and manufacturing to installation and maintenance, all services are provided from a single source.
- Site
- Düsseldorf
- Processes
- Welding work (metal and welding work), Installation of custom-made windows (plastic and aluminium), Repairs to windows, Manufacturing and installation of custom-made plastic doors, Manufacturing and installation of custom-made aluminium doors, Manufacturing and installation of multipurpose doors, Installation of fire protection doors and fire protection gates, Installation of door hold-open systems and smoke hold-open systems
- Materials
- Steel, Metal, Aluminium, Plastic
- Certificates
- Dorma manufacturer certification, GEZE manufacturer certification, Assa Abloy manufacturer certification, ISO 9001
- Founded
- 1932
- Industries
- Private customers, Property management companies, Businesses / Commercial properties, Multi-family houses / Residential complexes
- 01
Consultation and on-site measurement
- 02
Planning
- 03
Manufacturing (locksmith shop/welding work)
- 04
Delivery
- 05
Installation
- 06
Maintenance and repair
Materials and Processes
Steel
Base material for structural steelwork, gates, grilles and refuse chutes; processed by welding work.
Aluminium
Material for custom-made windows and doors in various designs.
Plastic
Material for custom-made windows and doors, including colour design according to RAL.
Locations

Düsseldorf
DEHeadquarters / Workshop
- Materials
- Steel, Aluminium, Plastic
- Welding workstation
Components and Products






Inside the production



Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Welding work (metal and welding work)Joining | – | – | – | – | Steel, Metal |
| Installation of custom-made windows (plastic and aluminium)Assembly | – | – | – | – | Plastic, Aluminium |
| Repairs to windowsAssembly | – | – | – | – | – |
| Manufacturing and installation of custom-made plastic doorsAssembly | – | – | – | – | Plastic |
| Manufacturing and installation of custom-made aluminium doorsAssembly | – | – | – | – | Aluminium |
| Manufacturing and installation of multipurpose doorsAssembly | – | – | – | – | – |
| Installation of fire protection doors and fire protection gatesAssembly | – | – | – | – | – |
| Installation of door hold-open systems and smoke hold-open systemsAssembly | – | – | – | – | – |
| Inspection and maintenance of fire protection systems including documentation handoverTesting | – | – | – | – | – |
| Manufacturing of sliding, swing and garden gates made to measureForming | – | – | – | – | – |
| Manufacturing and installation of hinged, garage, roller, sectional and up-and-over gatesAssembly | – | – | – | – | – |
| Manufacturing and installation of high-speed doorsAssembly | – | – | – | – | – |
| Installation of fence panels (Legi system) and wire mesh fencesAssembly | – | – | – | – | – |
| Manufacturing and installation of scissor grilles and roller grilles made to measureAssembly | – | – | – | – | – |
| Planning and installation of balcony canopies, patio roofs and entrance canopies made of metalAssembly | – | – | – | – | Metal |
| Structural steelwork: railings, handrails, fall protection made to measureAssembly | – | – | – | – | Metal |
| Staircase construction (emergency exit and access staircases)Assembly | – | – | – | – | – |
| Manufacturing of racking constructions and custom metal special fabricationsAssembly | – | – | – | – | Metal |
| Planning, manufacturing and installation of Düsseldorf refuse chutes and waste intake chutesAssembly | – | – | – | – | Metal |
| Burglary protection of doors, windows and gates (security concepts)Assembly | – | – | – | – | – |
| Installation of shopfront systemsAssembly | – | – | – | – | – |
| Maintenance of gates, doors, windows and fire protection systemsAssembly | – | – | – | – | – |
1 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Welding workstation | – | – | – | – | Düsseldorf |
Additional services
Reference customers
Quality and Certifications
The family business is certified by Dorma, GEZE and Assa Abloy. Maintenance of fire protection systems is carried out with handover of documentation.
| Evidence | Düsseldorf |
|---|---|
| Dorma manufacturer certification | |
| GEZE manufacturer certification | |
| Assa Abloy manufacturer certification | |
| ISO 9001 |
History
- 1932
Foundation of today's locksmith shop in Düsseldorf by Johann Schiefer; origins as a smithy and locksmith shop reach further back.
- 1967
The company is taken over by his son Johannes Schiefer.
- 1999
Rolf Pelzer (son-in-law) takes over the management in April.