Hydraulic steel structures, large pipe processing and heavy steel construction: finishing of sheet piles, large pipes and steel constructions in Bremerhaven.
Unterweser Stahl- und Maschinenbau GmbH
Bremerhaven (Am Lunedeich 143) · Bremerhaven (Am Kühlhauskai 3)New on Amplifa
About USM
Unterweser Stahl- und Maschinenbau GmbH (USM) has been active in hydraulic steel structures since 1992 and is a partner to major construction companies and steel groups on national and international port, flood protection and lock construction projects. The company manufactures and processes sheet piles, combined walls, beams, bearing piles, infill piles and large pipes, splices large pipes, performs circumferential weld seams up to 3,500 mm diameter and 98 t unit weight, and manufactures mooring dolphins, steel constructions and traverses. Further focal areas are metalworking, general and heavy steel construction, machinery and industrial plant construction, ship repair, CNC flame cutting, industrial services and port transshipment. Materials such as steel can be delivered by truck, rail or ship, transshipped, stored, processed, blasted and preserved, and shipped; at its own pier in the Fischereihafen, long material is loaded directly onto seagoing and inland waterway vessels. USM is part of the owner-managed Heinrich Rönner Group with 2,000 employees and 20 operating and production sites.
- Site
- Bremerhaven
- Processes
- Hydraulic steel structures (finishing and processing of sheet piles, manufacture of built-in, Assembly welding on construction sites, Large pipe processing (finishing and splicing of large pipes, circumferential weld seams,, Circumferential weld seams (up to 3,500 mm diameter, wall thicknesses up to 80 mm), Oxy-fuel flame cutting (CNC cutting machine), Manufacture of welded constructions (welding processes MIG, MAG, manual electrode, SAW, TIG), Site welding, General and heavy steel construction (steel constructions to customer requirements)
- Materials
- S355 J2 + N, Steel, Stainless steel, Aluminium, Hydraulic engineering material (sheet piles, beams, bearing piles, infill piles, large pipes)
- Certificates
- ISO 9001:2015, DIN EN 3834-2, DIN EN 1090-1, DIN EN 1090-2 (welding certificate), ISO 9001, DIN EN 1090-2
- Founded
- 1992
- Industries
- Port and hydraulic engineering, Flood protection, Steel construction, Shipbuilding/ship repair, Wind industry, Industrial construction/industrial services
- 01
CNC flame cutting
- 02
Finishing and processing of sheet piles and large pipes
- 03
Welding (MIG, MAG, manual electrode, SAW, TIG)
- 04
Blasting and surface preservation
- 05
Port transshipment and loading
- 06
Site welding and assembly
Materials and Processes
S355 J2 + N
Structural steel from stock for flame cutting, on request with 3.1 certificate.
Steel
Main material for sheet piles, beams, bearing piles, infill piles, large pipes and mooring dolphins.
Stainless steel
Material for welded constructions in structural engineering.
Aluminium
Material for welded constructions in accordance with the scope of the ISO 9001 certificate.
Locations
Bremerhaven, Plant I
DEAdministration and Plant I
- Lot size
- Single parts up to large volumes (hydraulic engineering material)
- Materials
- Steel, stainless steel, aluminium
- CNC flame cutting machine (3,000 × 12,000 mm, workpiece thickness max. 260 mm)
- Welding machines MIG/MAG/manual electrode/SAW/TIG
Bremerhaven, Plant II
DEPlant II with pier in the Fischereihafen, manufacturing, blasting and preservation halls, port transshipment
- Part weight / size
- Large pipes up to 98 t unit weight
- Lot size
- Large volumes of hydraulic engineering material
- Materials
- Steel
- Loading cranes at the pier
- Pier cranes
- Gantry cranes
- Large forklifts
- Blasting and preservation halls
Components
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Hydraulic steel structures (finishing and processing of sheet piles, manufacture of built-inJoining | – | – | – | – | Steel |
| Assembly welding on construction sitesJoining | – | – | – | – | Steel |
| Large pipe processing (finishing and splicing of large pipes, circumferential weld seams,Joining | – | – | 98 t | – | Steel |
| Circumferential weld seams (up to 3,500 mm diameter, wall thicknesses up to 80 mm)Joining | – | – | 98 t unit weight | – | Steel |
| Oxy-fuel flame cutting (CNC cutting machine)Machining | to DIN EN 9013:2002, accuracy class 2 | max. 12,000 mm × max. 3,000 mm | – | – | S355 J2 + N, Steel |
| Manufacture of welded constructions (welding processes MIG, MAG, manual electrode, SAW, TIG)Joining | – | – | – | – | Steel, Stainless steel, Aluminium |
| Site weldingJoining | – | – | – | – | Steel |
| General and heavy steel construction (steel constructions to customer requirements)Joining | – | – | – | – | Steel, Stainless steel, Aluminium |
| Metalworking / ship metalworkingAssembly | – | – | – | – | Steel |
| Ship repairAssembly | – | – | – | – | Steel |
| Component manufacturing for the wind industryJoining | – | – | – | – | Steel |
| Manufacture of traverses to customer requirementsJoining | – | – | – | – | Steel |
| Surface coating (preservation)Surface | – | – | – | – | Steel |
| BlastingSurface | – | – | – | – | Steel |
| Overhaul work on industrial plantsAssembly | – | – | – | – | Steel |
| Manufacture and repair of structures for port operationsJoining | – | – | – | – | Steel |
| Machinery and industrial plant constructionEngineering | – | – | – | – | Steel |
| Port transshipment / loading of long material onto seagoing and inland waterway vesselsAssembly | – | – | – | – | Steel (sheet piles, long material) |
6 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| CNC flame cutting machine | – | 1 | Max. working width 3,000 mm, max. working length 12,000 mm, max. workpiece thickness 260 mm | – | Bremerhaven |
| Welding machines (all common processes: MIG, MAG, manual electrode, SAW, TIG) | – | Multiple | – | – | Bremerhaven |
| Pier cranes | – | – | – | – | Bremerhaven |
| Gantry cranes | – | – | – | – | Bremerhaven |
| Large forklifts | – | – | – | – | Bremerhaven |
| Loading cranes at the pier | – | – | – | – | Plant II, Fischereihafen Bremerhaven |
Additional services
Reference customers
Quality
USM is certified to ISO 9001:2015 (SGS, UKAS) and holds the welding certifications DIN EN 3834-2 as well as DIN EN 1090-1 and DIN EN 1090-2. Flame cuts are produced to DIN EN 9013:2002, accuracy class 2; welders are certified by GL in MIG, MAG, manual electrode, SAW and TIG.
| Evidence | Bremerhaven, Plant I |
|---|---|
| ISO 9001 | |
| DIN EN 3834-2 | |
| DIN EN 1090-1 | |
| DIN EN 1090-2 |
History
- 1992
Foundation and start of operations in hydraulic steel structures as a partner to major construction companies and steel groups.
- 2002
Participation in the Altenwerder container terminal, Port of Hamburg: delivery of sheet piles and tilting anchors.
- 2003
Start of deliveries for the MO.S.E. flood barrier in Venice; over 30,000 t of steel delivered ready for installation.
- 2004
Finishing work on sheet piles for the expansion of the Bremerhaven container terminal.
- 2007
Delivery of sheet piles for the Kaiserschleuse Bremerhaven (35,000 t processed) and participation in the Gdansk container terminal (approx. 8,500 t).