Wholesale and procurement of fasteners, drawing parts and magnetic locking systems for six industrial sectors
Schrauben und Draht Union GmbH & Co. KG
Bochum · Parey/ElbeNew on Amplifa
Fastening technology for six industrial sectors
Schrauben und Draht Union GmbH & Co. KG (SDU), headquartered in Bochum, is a wholesale company for fastening technology founded in 1953, generating revenue of around EUR 27.6 million with 76 employees. The product range includes more than 50,000 standard parts (screws, nuts, washers) as well as custom-made parts to drawing, including turned and milled parts, stamped and laser-cut parts, bent parts, cast parts, deep-drawn parts and plastic parts. In-house developments include magnetic locking systems such as magnetic filter rods and magnetic locking screws as well as the SDU safety climbing bolt for overhead line construction. The production of drawing and special parts is carried out jointly with qualified suppliers in Germany, Europe and worldwide, complemented by heat and surface treatment as well as batch marking on the component. Key industries are chemicals, overhead line construction, mechanical engineering, steel construction, rail transport and open-cast, tunnel and deep mining; in rail transport the company is certified as a Q1 supplier to various European rail operators and rail vehicle manufacturers. In addition to the product range, SDU provides logistics services such as bill-of-materials-accurate picking, C-parts management, kanban, construction site supply and pre-assembly. Locations are in Bochum and Parey/Elbe.
- Site
- Bochum
- Processes
- Drawing/special parts (custom-made parts to drawing), Turned and milled parts (turning/milling as purchased parts), Stamped parts, Laser-cut parts, Bent parts (sheet metal bent parts), Cast parts, Deep-drawn parts, Plastic parts
- Materials
- 1.7218, 1.7709, 1.1181, 1.4571, 1.7218 (alloyed steel), 1.7709 (alloyed steel), 1.1181 (unalloyed steel), 1.4571 (stainless steel)
- Certificates
- ISO 9001, ISO 14001, ISO 45001, DB Q1, EcoVadis Silver Medal (CSR rating), Green electricity, DKV climate protection, GLS Climate Partner, ISO 9001 (since 1995), ISO 14001 (since 2010), ISO 45001 (since 2017), DB Q1 (Deutsche Bahn), EcoVadis Silver Medal
- Founded
- 1953
- Employees
- 76
- Industries
- Chemicals, Overhead line construction, Mechanical engineering, Steel construction, Rail transport, Open-cast, tunnel and deep mining
- 01
Supplier selection and global procurement
- 02
Custom-made parts to drawing with approval-qualified suppliers
- 03
Heat and surface treatment
- 04
Incoming goods quality inspection
- 05
Picking, packaging and labeling
- 06
Distribution logistics and construction site supply
Materials and processes
1.7218 (alloyed steel)
Material for heat-resistant fasteners in chemical plant construction.
1.7709 (alloyed steel)
Heat-resistant material for bolted connections on pressure equipment in accordance with AD 2000 data sheets.
1.1181 (unalloyed steel)
Unalloyed structural steel for fasteners in industry-standard strength classes.
1.4571 (stainless steel)
Rust-resistant and acid-resistant stainless steel for highly resistant connections in the chemical industry.
Plastic parts
Plastic components as part of the drawing parts program.
Magnetic materials
Various magnetic materials for magnetic filter rods and magnetic locking systems to drawing.
Locations
Bochum
DEMain location with sales, purchasing, quality inspection and logistics
- Materials
- Steel, stainless steel, plastic, magnetic materials
- Tensile testing machine
- Hardness testing devices
- Spectrometer
- Digital measuring projector
Parey/Elbe
DEOperating facility with warehousing and sales
- Materials
- Steel, stainless steel
Components and products
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Drawing/special parts (custom-made parts to drawing)Engineering | – | – | – | – | Steel, Stainless steel, Plastic |
| Turned and milled parts (turning/milling as purchased parts)Machining | tightest tolerances (bores/rings) | – | – | – | – |
| Stamped partsForming | – | – | – | – | Steel |
| Laser-cut partsMachining | – | – | – | – | Steel |
| Bent parts (sheet metal bent parts)Forming | – | – | – | – | Steel |
| Cast partsCasting | – | – | – | – | – |
| Deep-drawn partsForming | – | – | – | – | – |
| Plastic partsPlastics | – | – | – | – | Plastic |
| Heat treatment (for drawing/special parts)Heat treatment | – | – | – | – | Steel |
| Surface treatment (including coatings)Surface | – | – | – | – | – |
| Joining | – | – | – | – | Steel, Magnetic materials |
| SDU safety climbing bolt (safety pin/fastener)Joining | – | – | – | – | Steel |
| Batch marking on the component (embossed / lasered)Surface | – | – | – | – | – |
| Pre-assembly of individual componentsAssembly | – | – | – | – | – |
| Quality inspection (tensile testing, hardness testing, spectrometer, measuring projector, externalTesting | – | – | – | – | – |
4 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Tensile testing machine | – | – | – | – | Bochum |
| Hardness testing devices | – | – | – | – | Bochum |
| Spectrometer | – | – | – | – | Bochum |
| Digital measuring projector | – | – | – | – | Bochum |
Additional services
Reference customers
Quality
SDU ensures quality consistently from supplier selection to goods dispatch with its own testing equipment such as tensile testing machine, hardness testing devices, spectrometer and digital measuring projector; accredited external testing laboratories and government agencies are called in as required.
| Evidence | Bochum | Parey/Elbe |
|---|---|---|
| ISO 9001 (since 1995) | ||
| ISO 14001 (since 2010) | ||
| ISO 45001 (since 2017) | ||
| DB Q1 (Deutsche Bahn) | ||
| EcoVadis Silver Medal |
History
- 1953
Company founded
- 1995
External certification of the quality management system (ISO 9001)
- 2010
Certification of the environmental management system (ISO 14001)
- 2017
Certification of the occupational health and safety management system (ISO 45001)
- 2019
Joined the UN Global Compact on 17.05.2019