

Overview
About UnionStahl GmbH
Who we are
Your partner for heavy plate The company, UnionStahl GmbH, was founded in 2002. Since then we have continuously expanded our range of heavy plate to meet the needs of our customers. Today we store approx. 60,000 t of heavy plate and are one of the few full-range suppliers in the heavy plate area. With its oxy-fuel, plasma and laser cutting systems, our cutting operation is able to produce cuttings in the fixed dimensions you require. We offer you the processing services of milling, drilling, edging, rolling and welding and thus the possibility of purchasing ready-to-install components directly. UnionStahl is now one of the leading companies in the European heavy plate market. Our well-trained and committed employees are at your side with specialist knowledge and technical know-how in order to reliably meet your needs according to your wishes. And that's why we're proud of our employees, who work every day for the company, our customers and partners, developing and implementing new ideas. With the main pillars of UnionStahl - our team, our customers, our supply partners and the unique product range - we face new future challenges every day.
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Duisburg, Germany
Member since 2023
Employees200 - 500
Certificates2
Turnover100 - 500 Mil.
Year of foundation2002
Competencies
Technologies
Sheet Metal Processing
| Technologies | Lotsize | Length | Width | Weight | Material thickness |
|---|---|---|---|---|---|
Laser cutting 2D | 1–20,000 | 50–18,000 mm | 50–4,000 mm | — | 1–30 mm |
Bending / folding | 1–20,000 | 50–4,500 mm | — | — | 3–40 mm |
Oxyacetylene cutting | 1–20,000 | 250–24,000 mm | 250–4,500 mm | 0–40,000 kg | 3–800 mm |
Plasma fusion cutting | 1–20,000 | 250–24,000 mm | 250–4,500 mm | 0–12,500 kg | 5–30 mm |
Welding
| Technologies | Lotsize | Length | Width | Height | Diameter | Weight | Material thickness |
|---|---|---|---|---|---|---|---|
Inert gas shielded arc welding (MIG/MAG) | 1–200 | 50–6,000 mm | 50–2,000 mm | 3–600 mm | — | 0–10,000 kg | — |
Inert gas shielded arc welding (TIG) | 1–200 | 50–6,000 mm | 50–2,000 mm | 3–600 mm | — | 0–10,000 kg | — |
Robot welding | 1–20,000 | 50–1,500 mm | 50–750 mm | 3–250 mm | — | 0–1,500 kg | — |
Manual electrode welding | 1–200 | 50–6,000 mm | 50–2,000 mm | 3–600 mm | 50–2,000 mm | 0–10,000 kg | 3–600 mm |
Stud welding | 1–100 | — | — | — | — | — | — |
Welded constructions / Structural Steelwork
| Technologies | Length | Width | Height | Weight |
|---|---|---|---|---|
Welded constructions (weldments) | 50–6,000 mm | 50–2,000 mm | 3–600 mm | 0–10,000 kg |
Cutting tools (metal)
| Technologies |
|---|
Form milling cutter making |
Milling
| Technologies | Lotsize | Length | Width | Height |
|---|---|---|---|---|
5-axis milling machines | 1–20,000 | 50–1,000 mm | 50–1,000 mm | 3–600 mm |
Form milling (3 D) | 1–20,000 | 50–9,000 mm | 50–2,500 mm | 3–1,500 mm |
Drilling / Sawing
| Technologies | Lotsize | Length | Width | Height | Weight |
|---|---|---|---|---|---|
Drilling / threading / tapping | 1–20,000 | 50–9,000 mm | 50–2,500 mm | 3–1,500 mm | 0–10,000 kg |
Labelling / marking
| Technologies | Lotsize | Length | Width | Height | Diameter |
|---|---|---|---|---|---|
Laser marking / Laser inscription | 1–20,000 | 50–18,000 mm | 50–4,500 mm | 3–30 mm | 3–4,500 mm |
Marking | 1–200 | 50–18,000 mm | 50–4,500 mm | 3–30 mm | 3–4,500 mm |
Surface Treatment
| Technologies | Lotsize | Length | Width | Height | Weight |
|---|---|---|---|---|---|
Sand blasting | 1–200 | 1,000–12,000 mm | 1,000–4,500 mm | 6–600 mm | 0–12,000 kg |
Materials
Steel
Structural steelCase hardening/tempering steel
Industries
Building, agricultural and forestry machinery manufacturingMechanical engineeringMining and tunnel engineeringAutomotive and vehicle constructionBoiler, container and tank construction Shipbuilding industryPower generation and transmission industryPackaging industryRailway and rail vehicles industryDrive and gear engineeringApparatus engineeringPlant engineering and constructionSpecial purpose machinery manufacturingAerospace and aviation industryMilitary engineeringChemical industryPaper and printing machinery industry
Certificates
ISO 9001:2015
DIN 18800-7:2008 Class D/E (major welding cert.)
Parts & Machines
Machinery (2)
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ByStar Fiber 8025
ManufacturerBystronic
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Strahlanlage
ManufacturerRösler
Control-
2 Machinery
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