
Turnkey modular buildings made from prefabricated steel structures – engineered, produced, transported and installed from a single source.

Lead Modular (Marke der Oleum GmbH)
Düsseldorf (office) · Cologne (Oleum GmbH) · Frechen (Oleum GmbH) · Treysan plant, Turkey (production)New on Amplifa
About Lead Modular
Lead Modular is an international engineering and project management company headquartered in Düsseldorf, specializing in turnkey construction projects with a focus on modular construction methods. The portfolio includes modular buildings, bathroom units, installation walls, containers, houseboats, prefabricated steel structures and lightweight steel buildings made from high-strength light steel profiles. Approximately 95 percent of every project is manufactured in the factory; only integration and surface installation take place on site. Lead Modular is the regional partner of Treysan Prefabricated Steel Construction Industry & Trade Corp., a subsidiary of IC Holding founded in 1975, in whose plant in Turkey all production takes place (60,000 m² outdoor area, 21,000 m² covered production area, around 200 employees). Architecture, specialist planning, production, logistics, assembly and permit management are bundled in a single organizational structure; projects are realized primarily in Europe. All production processes are carried out to EN and DIN standards under the supervision of TÜV Nord. Lead Modular is a brand of Oleum GmbH, based in Cologne.
- Site
- Düsseldorf
- Processes
- Architecture and engineering, Project management, Prefabrication of modular buildings (factory manufacturing), Production of bathroom units (series production, galvanized construction, fully assembled), Production of installation walls (prefabricated), Manufacture of houseboats (factory manufacturing, connection of infrastructure in the shipyard), Container production (residential containers), Manufacture of prefabricated steel structures (halls)
- Materials
- Steel, High-strength light steel profiles, Galvanized construction (steel, galvanized), Galvanized steel structure
- Certificates
- ISO/EN/OHSAS certificates (Treysan production facility, not specified in detail), CE marking of materials used, TÜV Nord – production monitoring/acceptance, ISO/EN/OHSAS certificates (production facility, not specified in detail), CE marking of materials
- Industries
- Residential/social housing, Hotels/tourism, Healthcare (hospitals), Education/schools, Office/commercial, Industry (warehouses, halls)
- 01
Architecture and engineering (structural, electrical, mechanical planning)
- 02
Project management
- 03
Factory production (approx. 95 % in the factory, supervised by TÜV Nord)
- 04
Transport/logistics (door-to-door, land and sea transport)
- 05
On-site assembly and commissioning
- 06
Furniture and equipment planning and delivery
- 07
Inspection/acceptance by TÜV Nord (acceptance certificate)
Materials & Processes
Steel
Base material for prefabricated steel structures, halls and modular building frames.
High-strength light steel profiles
Material basis for lightweight steel buildings up to three storeys with high earthquake resistance.
Galvanized steel structure
Corrosion-protected frame construction for serially produced bathroom units.
Sites
Düsseldorf
DEHead office/office
Cologne
DEOperator/administration (Oleum GmbH)
Frechen
DELocation of Oleum GmbH

Treysan plant (Turkey)
TRProduction site (Treysan, partner of IC Holding)
- Materials
- Steel, galvanized steel, high-strength light steel profiles
Components & Products







Inside the production





Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Architecture and engineeringEngineering | – | – | – | – | – |
| Project managementEngineering | – | – | – | – | – |
| Prefabrication of modular buildings (factory manufacturing)Assembly | – | – | – | – | Steel |
| Production of bathroom units (series production, galvanized construction, fully assembled)Assembly | – | – | – | – | Steel (galvanized) |
| Production of installation walls (prefabricated)Assembly | – | – | – | – | – |
| Manufacture of houseboats (factory manufacturing, connection of infrastructure in the shipyard)Assembly | – | – | – | – | – |
| Container production (residential containers)Assembly | – | – | – | – | – |
| Manufacture of prefabricated steel structures (halls)Forming | – | – | – | – | Steel |
| Lightweight steel buildings (high-strength light steel profiles, factory manufacturing)Forming | – | – | – | – | High-strength light steel profiles |
| Prefabricated temporary buildingsAssembly | – | – | – | – | – |
| On-site assembly (integration, surface installation, electrical and mechanical installations)Assembly | – | – | – | – | – |
| Transport and logistics (land and sea transport, door-to-door delivery)Assembly | – | – | – | – | – |
| Design and delivery of furniture and technical equipmentEngineering | – | – | – | – | – |
| Inspection and acceptance by TÜV Nord (production monitoring, acceptance certificate)Testing | – | – | – | – | – |
1 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Production facility (Treysan plant) | Treysan Prefabricated Steel Construction Industry & Trade Corp. | 1 | 60,000 m² production area outdoors, 21,000 m² covered production area | – | Treysan plant (partner, IC Holding) |
Additional services
Quality & Guarantee
All production processes are carried out to EN and DIN standards under daily supervision by TÜV Nord; after completion of production an acceptance certificate is issued. All materials used are CE-certified and the production facility holds ISO, EN and OHSAS certificates.
| Evidence | Treysan plant (Turkey) |
|---|---|
| TÜV Nord – production monitoring/acceptance | |
| ISO/EN/OHSAS certificates (production facility, not specified in detail) | |
| CE marking of materials |
History
- 1975
Foundation of production partner Treysan Prefabricated Steel Construction, subsidiary of IC Holding