Trading and manufacturing of rebar, steel constructions, structural steel, sheets and non-ferrous metals to size
Kropp-Stahl GmbH
Vreden · DorstenNew on Amplifa
Welcome to KroppStahl
Kropp-Stahl GmbH in Vreden is a steel trading and manufacturing company with its own production. In the in-house bending shop, rebar, stirrups, rebar cages and steel cut-offs are manufactured to individual drawings; rebar meshes, including high-ductile ones, as well as formwork anchors to size are produced in-house. In steel construction, steel columns, support frames and cut-to-size beams are produced; individual steel lists are created from structural drawings. The product range includes profile steel and beams, tubes, sheets including flame-cut parts, quality steel, stainless steel, aluminium and non-ferrous metals as well as fence meshes, welded and woven fence panels, construction steel accessories and locksmith supplies. Beams are blasted, primed or galvanized, fence systems powder-coated, constructions welded and delivered to the construction site on schedule. Customers come from construction, steel construction, mechanical and automotive engineering as well as trades; Germany and the Netherlands are supplied.
- Site
- Vreden
- Processes
- Cutting, bending and manufacturing rebar to drawings (stirrups, rebar cages, steel cut-offs), Manufacturing rebar meshes (including high-ductile), Tying of reinforcement structures (prefab), KOMO Cat.1, Bending, cutting, tying and welding work on reinforcement (Ø ≥ 8 mm, Ømin/Ømax ≥ 0.20), Steel construction / steel constructions to size (steel columns, support frames, cut-to-size beams), Fabrication of load-bearing components and kits for steel structures up to EXC3 (EN 1090-2), Fusion welding of metallic materials (Certified according to DIN EN ISO 3834, EN ISO 17660-1), Flame-cut parts (sheets)
- Materials
- Rebar, C35, C45, 42CrMo4, 11SMn30, 16MnCr5, S235, S355
- Certificates
- EN 1090-2 (load-bearing components and kits for steel structures up to EXC3), ISO 3834 (quality requirements for fusion welding), KOMO Productcertificaat BRL 0503 (bending and tying work, Category 1), EN 1090-2 (up to EXC3), ISO 3834 (fusion welding), KOMO BRL 0503 Cat. 1 (Kiwa)
- Founded
- 1996
- Industries
- Construction (building, bridge and stadium construction), Steel construction, Mechanical engineering, Automotive engineering, Trades/locksmithing, Facade and pipe fixing systems
- 01
Goods receiving with forklifts and crane systems
- 02
Creation of individual steel lists from structural drawings
- 03
Cutting and flame-cutting of sheets and beams
- 04
Bending shop for rebar (stirrups, cages, cut-offs)
- 05
Welding of steel constructions
- 06
Blasting, priming, galvanizing or powder coating
- 07
Scheduled delivery to the construction site
Materials and Processes
Rebar
Processed in the in-house bending shop into stirrups, cages and cut-offs as well as rebar meshes, including high-ductile ones.
Structural steel S235 and S355
Used in profile steel, beams, tubes and steel constructions to size.
Quality steel C35, C45, 42CrMo4, 11SMn30, 16MnCr5
Quality and heat-treatable steels for machining and technical applications.
Sheet metal DC01, DD11, QSTE380, QSTE690, P265GH
Sheets in stock and large-stock formats, as flame-cut parts, galvanized or color-coated.
Stainless steel 1.4301, 1.4541, 1.4571, 1.4828
Bar stock, sheets and tubes for corrosion-resistant applications, also as V4A earthing strip.
Aluminium AlMgSi0,5, AlMg3, AlMg1, AlCuMgPb, AlMg4,5Mn
Sheets, bar stock and tubes for lightweight construction and non-ferrous metal applications.
Brass CuZn37, CuZn39Pb, CuZn44Pb
Sheets and bar stock profiles in various cross-sections.
Copper E-Cu, SF-Cu
Sheets and bar stock profiles for electrical and decorative applications.
Locations
Vreden
DEHeadquarters with production, bending shop and warehouse
- Materials
- Rebar, steel, stainless steel, aluminium
- Rebar bending machines
- Crane systems
- Forklifts
Dorsten
DESecond location for material storage and processing, shorter delivery times to the Ruhr area
- Materials
- Steel, stainless steel
- Crane systems
- Forklifts
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Cutting, bending and manufacturing rebar to drawings (stirrups, rebar cages, steel cut-offs)Forming | – | – | – | – | Rebar |
| Manufacturing rebar meshes (including high-ductile)Joining | – | – | – | – | Rebar |
| Tying of reinforcement structures (prefab), KOMO Cat.1Joining | – | – | – | – | Rebar |
| Bending, cutting, tying and welding work on reinforcement (Ø ≥ 8 mm, Ømin/Ømax ≥ 0.20)Joining | – | – | – | – | Rebar |
| Steel construction / steel constructions to size (steel columns, support frames, cut-to-size beams)Assembly | – | – | – | – | Steel, Stainless steel |
| Fabrication of load-bearing components and kits for steel structures up to EXC3 (EN 1090-2)Assembly | – | – | – | – | Steel |
| Fusion welding of metallic materials (Certified according to DIN EN ISO 3834, EN ISO 17660-1)Joining | – | – | – | – | Steel, Stainless steel |
| Flame-cut parts (sheets)Machining | – | – | – | – | Steel, Stainless steel, Aluminium |
| Custom cutting of beams (cut beams, to size)Machining | – | – | – | – | Steel |
| Galvanizing of beams/cut-offsSurface | – | – | – | – | Steel |
| Priming of beamsSurface | – | – | – | – | Steel |
| Blasting of beamsSurface | – | – | – | – | Steel |
| Powder coating (fence meshes & fence systems)Surface | – | – | – | – | Steel |
| In-house production of formwork anchors to sizeJoining | – | – | – | – | Steel |
| Creation of individual steel lists from structural drawingsEngineering | – | – | – | – | – |
2 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Rebar bending machine | – | – | – | 2006 | Vreden |
| Crane system | – | – | – | – | Vreden / Dorsten |
Additional services
Reference customers
Quality and Certificates
The fabrication of load-bearing steel components up to EXC3 is certified according to EN 1090-2, fusion welding according to ISO 3834; the Kiwa-KOMO product certificate BRL 0503 Category 1 applies to rebar bending and welding work. Every rebar item is labeled with an item card, which enables completeness checks and quick locating on the construction site.
| Evidence | Vreden | Dorsten |
|---|---|---|
| EN 1090-2 (up to EXC3) | ||
| ISO 3834 (fusion welding) | ||
| KOMO BRL 0503 Cat. 1 (Kiwa) |
History
- 1996
After 36 years as Heinrich Kropp ironmongery, takeover and legal succession as Kropp-Stahl GmbH by Josef Blömer, Karl-Heinz Flüthmann and Franz-Wilhelm Frankemölle; location Master Esch, Vreden, 2,500 sqm
- 1998
Construction of the first production hall and relocation to Lise-Meitner-Straße, Vreden; 10,000 sqm of operating area
- 2002
Opening of the second location in Dorsten with Josef Blömer as managing director
- 2005
First participation in the Vreden business show Aufwind
- 2006
New construction of two warehouse halls (total 2,300 sqm) and office extension; covered area in Vreden 3,800 sqm; investment in another rebar bending machine
- 2008
First company family festival
- 2010
Introduction of an employee charter (steel sun by artist Norbert Then)
- 2013
Third participation in the Vreden business show Aufwind
- 2015
Retirement of managing director Karl-Heinz Flüthmann; relocation of the Dorsten branch to Barbarastraße 48
- 2017
Introduction of new corporate design; fourth participation in Aufwind; new ERP system
- 2018
New website www.kroppstahl.com goes online
- 2019
Completion of the extension in Vreden: doubling of the covered production and warehouse area, new staff facilities