Service provider for non-ferrous metal semi-finished brass products, drawing-based plant components, bar steel and repair services.
Bronckhorst GmbH
DüsseldorfNew on Amplifa
About Bronckhorst
Bronckhorst GmbH is a family-run company founded in 1970 and headquartered in Düsseldorf, positioning itself as an international service provider for non-ferrous metals, plant components and bar steel. The Non-Ferrous Metals division distributes semi-finished products, bars, profiles and cast blocks made of brass, including custom alloys that are low-lead, lead-free or dezincification-resistant and comply with the requirements of the German Drinking Water Ordinance and the UBA positive list. The Plant Engineering division supplies drawing-based components finished or pre-machined, as individual parts or assembled units, and offers plant operators repair and revamping services including mechanical rework, weld repair, metal spray coating, dynamic balancing and non-destructive testing. The Bar Steel division imports rolled and forged long products from Europe and China, serving stockholding distributors across Europe. The subsidiary BROtec GmbH complements the offering as a specialist in mechanical and plant engineering, having complete assemblies manufactured.
- Site
- Düsseldorf
- Processes
- Manufacture of drawing-based components (finished or pre-machined, individual parts or assembled, Repair of components and assemblies (mechanical rework), Weld repair, Metal spray coating (bearing seats, fitting seats), Dynamic balancing, Surface crack testing / non-destructive testing, Shrink-fitting of axles (fitting new axles into a running wheel), Face turning of large components (vertical turning)
- Materials
- Brass (general, semi-finished products and cast blocks), CENTRICORE 4 (composite material for winding sleeves), CB 757 S (CuZn39Pb1Al-C), CB 770 S (CuZn36Pb-C), dezincification-resistant, CW614N, CW617N, CW508L, CW509L
- Certificates
- Ultrasonic testing of bar steel, Inspection certificates, Non-destructive testing / surface crack testing
- Founded
- 1970
- Industries
- Sanitary industry/valves and fittings, Foundries, Turning shops, Metal pressing plants, Stockholding metal trade, Cement industry
- 01
Continuous casting of brass feedstock (induction furnace at continuous casting
- 02
Production of brass blocks (castings)
- 03
Drawing and pressing of brass bars and profiles
- 04
Import of rolled and forged bar steel from Europe and China
- 05
Procurement of drawing-based plant components (among others forged steel,
- 06
Manufacture of assembled units in mechanical and plant engineering (BROtec GmbH)
- 07
Repair and revamping: disassembly, testing, rework, assembly
Locations
Düsseldorf
DEHeadquarters with Non-Ferrous Metals, Plant Engineering and Bar Steel divisions
- Part weight / size
- Repair of parts up to 17900 kg, components up to Ø2889×1730
- Lot size
- Individual parts and assembled units; batches e.g. 1000–1300 kg pallets,
- Materials
- Brass (CW614N, CW617N, special alloys), steel, stainless steel, cast iron
- Continuous casting plant for brass
- Induction furnace
- Vertical turning lathe (up to Ø2889 mm)
- Balancing machines (dynamic balancing)
Parts & Components
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Manufacture of drawing-based components (finished or pre-machined, individual parts or assembledAssembly | – | – | – | – | Brass, Cast iron, Steel, Stainless steel |
| Repair of components and assemblies (mechanical rework)Machining | – | Ø2889x1730mm | 17900kg | – | 1.4462, Steel, Stainless steel |
| Weld repairJoining | – | – | – | – | 1.4462 |
| Metal spray coating (bearing seats, fitting seats)Surface | – | – | – | – | Steel |
| Dynamic balancingTesting | – | – | – | – | – |
| Surface crack testing / non-destructive testingTesting | – | – | – | – | – |
| Shrink-fitting of axles (fitting new axles into a running wheel)Assembly | – | Ø1600mm | – | – | – |
| Face turning of large components (vertical turning)Machining | – | 1730mm × Ø2889mm | 17900kg | – | Steel |
| Milling (manhole openings milled, star-shaped milled shaft)Machining | – | Ø3690mm | 32500kg | – | 16Mo3 |
| Welding/assembly fabrication (welded runner hub made of rolled rings and bent plate)Joining | – | 2361mm × Ø3690mm | 32500kg | – | Steel, Forged steel 16Mo3 |
| Supply of forged steel components (generator shaft, flange shaft, rotor shaft)Forming | – | – | 11800kg | – | 16Mo3, 42CrMo4+QT |
| Supply of stainless steel cast components (nozzle head, runner bottom, runner blade, guide vane)Casting | – | – | 14kg – 720kg | – | 1.4837, 1.4848, GX4CrNi13-4+QT1 (1.4317), GX4CrNi13-4 |
| Production and distribution of brass blocks (cast blocks, castings)Casting | – | – | 10kg – 12kg | – | CB 757 S (CuZn39Pb1Al-C), CB 770 S (CuZn36Pb-C), lead-free alloys |
| Continuous casting of brass (feedstock for brass bars)Casting | – | – | – | – | Brass CW614N, CW617N |
| Supply of drawn brass bars (drilling and turning quality)Forming | – | Ø5-65mm | – | – | CW614N, CW617N, CW508L, CW509L, CW510L, CW511L, CW601N, CW602N, CW603N, CW607N, CW608N, CW612N, CW625N, CW626N, CW713R, CW722R |
| Supply of pressed (extruded) brass barsForming | – | Ø11-95mm | – | – | CW614N, CW617N |
| Supply of brass profiles (solid and hollow profiles, flat, angle, square, hexagonal,Forming | – | – | – | – | Brass |
| Supply of forged, pre-turned bar steel (ultrasonically tested, with inspection certificate)Forming | pre-turned to -0/+3mm | 6000mm (special lengths up to 12000mm) × Ø200-1200mm, flt. 150-360mm | – | – | S355J2+N, C45E+N, C60E+N, 42CrMoS4+QT, 30CrNiMo8+QT, 34CrNiMo6+QT, 18CrNiMo7-6+HH+FP, 56NiCrMoV7+QT |
| Supply of hot-rolled, peeled bar steel (ultrasonically tested, with inspection certificate,Forming | peeled to -0/+3mm | 3500-6000mm × Ø130-330mm | – | – | S355J0, S355J2+N, C15R+N, C45R+N, C60R+N, 42CrMoS4+QT, 30CrNiMo8+QT, 34CrNiMo6+QT, 16MnCrS5+H+TH, 18CrNiMo7-6+HH+FP |
4 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Continuous casting plant for brass | – | – | – | – | Bronckhorst brass bar production |
| Induction furnace (for continuous casting feedstock) | – | – | – | – | Bronckhorst brass bar production |
| Vertical turning lathe (vertical turning lathe, components up to Ø2889mm) | – | – | Component Ø2889x1730mm | – | – |
| Balancing machines (dynamic balancing) | – | – | – | – | – |
Additional services
Quality & Testing
Bar steel is ultrasonically tested and delivered with an inspection certificate. In repair work, surface crack testing and other non-destructive testing methods, pressure tests and dynamic balancing are employed.
| Evidence | Düsseldorf |
|---|---|
| Ultrasonic testing of bar steel | |
| Inspection certificates | |
| Non-destructive testing / surface crack testing |
History
- 1970
Foundation of the family business; over 50 years in the market for products in brass, cast iron and steel.