Contract manufacturing of welded components and assemblies for mechanical engineering, metallurgy and rail technology.
Alfred Woltering Stahl- und Maschinenbau GmbH & Co. KG
OchtrupNew on Amplifa
About us
Alfred Woltering Stahl- und Maschinenbau GmbH & Co. KG is a professional contract manufacturer based in Ochtrup (district of Steinfurt, North Rhine-Westphalia). The company manufactures and assembles components and assemblies made of steel and stainless steel (CrNi), among other things for metallurgical plant engineering, mechanical and plant engineering and structural steelwork. The service chain covers development and design, calculation and structural analysis, prototype construction, cutting and finishing, welding, mechanical machining, surface technology and assembly – supplemented by repair, maintenance, 24/7 service as well as warehouse and logistics services. The welding operation is certified to EN 15085-2 CL1 (rail vehicle construction), DIN EN ISO 3834, AD 2000-Merkblatt HP 0, DIN EN 1090-2 EXC3 and DIN 2303 Q2 BK1 (defence technology); the quality management system is accredited to ISO 9001:2015. Customers are found in sectors such as mechanical and plant engineering, construction machinery technology, steel-producing industry, rail vehicle technology, crane construction, agricultural and sewage technology as well as chemicals, pharmaceuticals and medical technology.
- Site
- Ochtrup
- Processes
- Cutting & Finishing, Welding Steel & Cr-Ni, Welding of rail vehicles and rail vehicle parts to EN 15085-2 CL1 (processes 111, 121, 135,, Mechanics, Surface Technology, Assembly, Turning Introductions, Repair
- Materials
- Steel (Material Group 8.1), Unalloyed structural steel (Material Group 1.2), Stainless steel / Cr-Ni (Material Group 10.1), Stainless steel (Material Group 3.1), Stainless steel (Material Group 3.2), Unalloyed structural steel (CEN ISO/TR 15608 Group 1.2), Steel (CEN ISO/TR 15608 Group 8.1), Stainless steel / CrNi (CEN ISO/TR 15608 Group 10.1)
- Certificates
- ISO 9001:2015, EN 15085-2 CL1 (Rail Vehicle Construction), DIN EN ISO 3834, DIN 2303 Q2 BK1 (Defence Technology), DIN EN 1090-2 EXC3 (Welding Approval), AD 2000-Merkblatt HP 0 / HP 100 R (Pressure Vessel Construction), Certified specialist company under AwSV, Re-stamping Agreement, ISO 9001, EN 15085-2 CL1, DIN EN 1090-2 EXC3, AD 2000 HP 0, DIN 2303 Q2 BK1
- Industries
- Mechanical & Plant Engineering, Construction Machinery Technology, Steel-Producing Industry (Metallurgy), Rail Vehicle Technology, Crane Construction and Lifting Equipment, Agricultural Technology
- 01
Development & Design
- 02
Calculation & Structural Analysis
- 03
Prototype Construction
- 04
Cutting & Finishing
- 05
Welding Steel & CrNi
- 06
Mechanics/Machining
- 07
Surface Technology
- 08
Assembly
- 09
Maintenance & Repair
Materials and Processes
Unalloyed structural steel (CEN ISO/TR 15608 Group 1.2)
Unalloyed structural steel, certified welded with wall thicknesses from 3 to 100 mm.
Steel (CEN ISO/TR 15608 Group 8.1)
Material group 8.1 for welded components, certified for wall thicknesses including 1.8–120 mm.
Stainless steel / CrNi (CEN ISO/TR 15608 Group 10.1)
Stainless steel of group 10.1 for corrosion-exposed components and assemblies.
Stainless steel (CEN ISO/TR 15608 Group 3.1)
CrNi material group 3.1, certified for fusion welding processes up to 100 mm wall thickness.
Stainless steel (CEN ISO/TR 15608 Group 3.2)
CrNi material group 3.2 for demanding welding applications.
Locations
Ochtrup
DEHeadquarters and Production
- Materials
- Steel, CrNi (stainless steel)
- Two crane systems with 36 t lifting capacity each
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Cutting & FinishingMachining | – | – | – | – | Steel, Cr-Ni (stainless steel) |
| Welding Steel & Cr-NiJoining | – | – | – | – | Steel, Cr-Ni (stainless steel) |
| Welding of rail vehicles and rail vehicle parts to EN 15085-2 CL1 (processes 111, 121, 135,Joining | – | – | – | – | Material group 1.2, 8.1, 3.1, 3.2 |
| MechanicsMachining | – | – | – | – | – |
| Surface TechnologySurface | – | – | – | – | – |
| AssemblyAssembly | – | – | – | – | – |
| Turning IntroductionsAssembly | – | – | – | – | – |
| RepairAssembly | – | – | – | – | – |
| Calculation & Structural AnalysisEngineering | – | – | – | – | – |
| Development & DesignEngineering | – | – | – | – | – |
| Concept DevelopmentEngineering | – | – | – | – | – |
| Product & Process OptimisationEngineering | – | – | – | – | – |
| Prototype ConstructionEngineering | – | – | – | – | – |
| Failure AnalysisTesting | – | – | – | – | – |
| Pressure Vessel Construction (AD-2000 HP 0)Joining | – | – | – | – | – |
| Defence Products: Welding / Brazing / Thermal Spraying (DIN 2303 Q2 BK1)Joining | – | – | – | – | – |
| Structural Steelwork to DIN EN 1090-2 EXC3Joining | – | – | – | – | Steel |
| Maintenance & RepairAssembly | – | – | – | – | – |
1 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Crane System | – | 2 | 36 t lifting capacity per crane system | – | Ochtrup |
Additional services
Quality and Certificates
The quality management system is certified to ISO 9001:2015; welding production holds approvals to EN 15085-2 CL1, DIN EN ISO 3834, DIN EN 1090-2 EXC3, AD 2000 HP 0 and DIN 2303 Q2 BK1 with qualified welding coordination personnel (IWE/IWT/EWS).
| Evidence | Ochtrup |
|---|---|
| ISO 9001 | |
| EN 15085-2 CL1 | |
| DIN EN ISO 3834 | |
| DIN EN 1090-2 EXC3 | |
| AD 2000 HP 0 | |
| DIN 2303 Q2 BK1 | |
| Certified specialist company under AwSV |