Pressure vessels, apparatus and mechanical engineering components made of stainless steel and steel – manufactured in Schwentinental since 1921.
S Technik Behälter Apparatebau GmbH
Schwentinental (Kiel), DENew on Amplifa
About S Technik
S Technik Behälter Apparatebau GmbH manufactures pressure vessels, apparatus, pipework and mechanical engineering components in Schwentinental near Kiel – from individual parts to complex assemblies. The range of services includes contract manufacturing with laser cutting, bending and welding (TIG/MIG/MAG) in accordance with ISO 3834-2, surface finishing by pickling, electropolishing and blasting as well as prototype construction including electrical implementation and engineering. Production is carried out in high-alloy stainless steels (e.g. 1.4571, duplex), structural steels (S235, S355), shipbuilding steel, CuNi and aluminium. Customers come from the food and pharmaceutical industries, marine, industry (sterilisation and clean air), energy, oil & gas and defence technology. The company is certified to DIN EN ISO 9001, ISO 3834-2, EN 13445/AD 2000 HP0, the Pressure Equipment Directive 2014/68/EU and DNV, and manufactures on 1800 m² of production space.
- Site
- Schwentinental
- Processes
- Laser cutting, Bending (press brake), Welding TIG/MIG/MAG, Grinding, Pickling, Electropolishing, Blasting, Pressure vessel manufacturing
- Materials
- Stainless steel (high-alloy), Duplex, S235, S355, NV A - D (shipbuilding steel), CuNi10Fe1,6Mn, Aluminium, Stainless steel 1.4571 (high-alloy)
- Certificates
- DIN EN ISO 9001:2015, DIN EN ISO 3834-2, EN 13480 / AD 2000 HP 100 R, Directive 2014/68/EU (Pressure Equipment Directive), Annex I No. 3.1, EN 13445 / AD 2000 HP0, DNV Welding Workshop Approval (DNV-CP-0352), Manufacturer qualification according to DIN 2303 (defence products), EN 13445 / AD 2000 HP0 (pressure vessels), EN 13480 / AD 2000 HP 100 R (pipework), Pressure Equipment Directive 2014/68/EU, Annex I No. 3.1, Manufacturer qualification DIN 2303 (defence technology)
- Founded
- 1921
- Industries
- Food & Pharma, Marine, Industry (sterilisation & clean air), Energy (desulphurisation vessels), Oil & Gas, Defence technology
- 01
Engineering and consulting
- 02
Laser cutting
- 03
Bending
- 04
Welding (TIG/MIG/MAG)
- 05
Grinding / surface finishing (pickling, electropolishing, blasting)
- 06
Inspection and documentation
- 07
Delivery
Materials & Processes
Stainless steel 1.4571 (high-alloy)
High-alloy stainless steel for pressure vessels, pipework and welding work according to DNV manufacturer qualification.
Duplex stainless steel
For laser cutting and contract manufacturing of demanding corrosion-resistant components.
S235
Structural steel for welded constructions, pipework and defence components (group 1.1).
S355
Higher-strength structural steel for load-bearing welded components (group 1.2).
Shipbuilding steel NV A–D
For maritime applications under the DNV workshop approval.
CuNi10Fe1,6Mn
Copper-nickel alloy for pipework in shipbuilding and plant engineering.
Aluminium
For laser cutting and contract manufacturing of lightweight components.
Welding TIG/MIG/MAG
Certified welders according to ISO 3834-2 / ISO 9606 for high-alloy stainless steels and structural steels.
Laser cutting
Cutting of stainless steel, aluminium and duplex from one-off production to series.
Pickling, electropolishing, blasting
Surface finishing for highly pure functional or high-quality visual surfaces.
Sites
Schwentinental
DEManufacturing and administration
- Lot size
- One-off production to series
- Materials
- Stainless steel (1.4571, duplex), S235, S355, NV A–D, CuNi10Fe1,6Mn, aluminium
- Laser cutting
- Press brake
- TIG/MIG/MAG welding stations
- Grinding technology
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Laser cuttingMachining | – | – | – | One-off production – Series | Stainless steel, Aluminium, Duplex |
| Bending (press brake)Forming | – | – | – | – | Sheet metal |
| Welding TIG/MIG/MAGJoining | – | – | – | Individual part – Series | high-alloy stainless steels, S235, S355, 1.4571, CuNi10Fe1,6Mn |
| GrindingSurface | – | – | – | – | – |
| PicklingSurface | – | – | – | – | – |
| ElectropolishingSurface | – | – | – | – | – |
| BlastingSurface | – | – | – | – | – |
| Pressure vessel manufacturingApparatus engineering | – | – | – | – | Stainless steel |
| Pipework constructionApparatus engineering | – | – | – | – | S235, S355, 1.4571, CuNi10Fe1,6Mn |
| Manufacture of mechanical engineering components (individual parts to complex assemblies)Assembly | – | – | – | Individual parts | – |
| Prototype construction incl. electrical implementationEngineering | – | – | – | – | – |
| Project planning and engineering (consulting, planning, conceptual design)Engineering | – | – | – | – | – |
Additional services
Reference customers
Quality & Certifications
Manufacturing is carried out in accordance with DIN EN ISO 9001:2015 (TÜV NORD) and DIN EN ISO 3834-2 with certified welders (ISO 9606) and documented traceability from cutting to delivery. Welding supervision is staffed according to DNV (welding coordinator: Hannes Hübner, represented by Evgeny Petrov).
| Evidence | Schwentinental |
|---|---|
| DIN EN ISO 9001:2015 | |
| DIN EN ISO 3834-2 | |
| EN 13445 / AD 2000 HP0 (pressure vessels) | |
| EN 13480 / AD 2000 HP 100 R (pipework) | |
| Pressure Equipment Directive 2014/68/EU, Annex I No. 3.1 | |
| DNV Welding Workshop Approval (DNV-CP-0352) | |
| Manufacturer qualification DIN 2303 (defence technology) |
History
- 1921
Founded as a workshop for mechanical and apparatus engineering by Fritz Hecht in Stormarnstraße, Kiel
- 1943
Fritz Hecht und Tödt GmbH – manufacture of dairy and plate heat exchangers
- 1994
Renamed S Technik Behälter-Apparatebau GmbH
- 2001
Acquisition of all company shares by Hanna Hafner
- 2026
New website; certified specialist for pressure vessels and apparatus engineering in Schwentinental