Rohrformteile aus C-Stahl, Edelstahl, Duplex und Sonderlegierungen.
Pipe fittings made of carbon steel, stainless steel, duplex stainless steel and special alloys.
We manufacture and supply seamless pipe fittings for demanding industrial systems - compliant with EN 10253, ASME B16.9, AD 2000 and EN 13480. In-house production in Unna, delivery throughout Europe.
Highest quality requirements
Custom orders
Special materials
Nuclear technology
We are strong where others have to give in
Nirotec ist Hersteller, Dienstleister und Lieferant von nahtlosen Rohrformteilen für industrielle Rohrleitungssysteme. Von unlegierten Druckbehälterstählen und warmfesten Stählen in dickwandiger Ausführung bis zu Duplex, Super Duplex, Nickellegierungen und Extremwerkstoffen – wir liefern präzise Komponenten für kritische Anwendungen in der Energie-, Prozess- und Nuklearindustrie.
Als Hersteller und Händler mit über 35 Jahren Erfahrung verbinden wir eigene Fertigungstiefe mit einem internationalen Beschaffungsnetzwerk – für Komplettlieferungen aus einer Hand, vollständige documentation, Rückverfolgbarkeit und projektspezifische Prüfung.
Our depth of production ranges from standard molded parts to custom-made products based on drawings. We are the right partner for projects with increased requirements – be it according to KTA, RCC-M, NORSOK or customer-specific specifications.
Dazu gehört auch die Fertigung von Dirsekler und T-Stücken nach EN 10253-2 Typ B – dickwandige Ausführungen mit erhöhten Mindestwanddicken, die nicht jeder Hersteller liefern kann.
Nirotec is a manufacturer, service provider and supplier of seamless pipe fittings for industrial piping systems. From unalloyed pressure vessel steels and heat-resistant steels in heavy-wall designs to duplex, super duplex, nickel alloys and extreme-service materials, we supply precision-engineered components for critical applications in the energy, process and nuclear industries.
As a manufacturer and supplier with more than 35 years of experience, we combine extensive in-house manufacturing capabilities with an international procurement network. This enables us to provide complete project packages from a single source, including full documentation, material traceability and project-specific testing and inspection.
Our manufacturing capabilities range from standard pipe fittings to custom components manufactured to customer drawings. For projects subject to stringent requirements—whether under KTA, RCC-M, NORSOK or customer-specific specifications—we are the right partner.
Our capabilities also include the manufacture of pipe bends and tees in accordance with EN 10253-2 Type B. These heavy-wall components feature increased minimum wall thicknesses and require manufacturing expertise that not every supplier can provide.
Our products
As a manufacturer, Nirotec supplies butt-weld fittings and piping components for industrial plants worldwide. Our range includes seamless tees, reducers and special fittings manufactured by cold and hot forming, including elbows and tees in accordance with EN 10253-2 Type B for safety-critical applications. We ensure precision machining and documented traceability in accordance with project-specific requirements.
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Dirsekler
Seamless elbows according to EN 10253 and ASME B16.9 in stainless steel, Duplex, Super Duplex and 6Mo
Te parçaları
Seamless tees and branches – manufactured using cold and hot forming as well as IHU processes
Redüksiyonlar
Concentric and eccentric reducers according to EN 10253 and ASME B16.9
Flanşlar
Flanges according to EN 1092-1 and ASME B16.5 – in all common pressure levels, materials and designs
Boru kapakları
End caps for pressure piping in accordance with EN 10253 and ASME B16.9.
Borular
Pipes for industrial piping systems
Özel bağlantı parçaları
Individual pipe fittings according to drawings and project-specific requirements.
Aksesuarlar
Accessories and additional piping components
Our materials
Nirotec supplies pipe fittings in a wide range of materials - from standard steels in thick-walled versions to high-alloy special materials:
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Unalloyed & low-alloyed steels:
P235GH · P265GH · P355GH · P355NL · L245 · L360 · L415
also available in especially heavy-wall designs for high-pressure applications and equipment construction.
Heat-resistant steels:
6Mo3 · 13CrMo4-5 · 10CrMo9-10 · 11CrMo9-10 · P91 (X10CrMoVNb9-1)
for power plants, steam pipelines and high temperature applications.
Austenitic stainless steel:
1.4301 · 1.4307 · 1.4404 · 1.4435 · 1.4571 (AISI 304/304L/316/316L/316Ti)
6Mo & high alloy steels:
1.4547 (UNS S31254) · 1.4529 (US N08926)
Nickel alloys:
Alloy 625 (2.4856) · Alloy 825 (2.4858) · Alloy C-276 (2.4819)
Our Manufacturing Capabilities
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Connecting Pipelines – since 1989
Nirotec has been supplying pipe fittings for demanding industrial projects for over 35 years. Three plants in Unna, our own forming production, mechanical processing, surface processing, heat treatment and seaworthy packaging - all from a single source.
Special Manufacturing Capabilities
Our product range includes seamless tees, reducers and special fittings manufactured by cold and hot forming. We ensure precision machining and documented traceability in accordance with project-specific requirements.
Approvals & Certificates
Nirotec meets international requirements for industrial piping components: ISO 9001, AD 2000 (W0/HP0), ISO 19443 (from July 2026), CRN. Material testing, dimensional inspections, PMI, NDT and complete documentation are integral to our projects—both as standard and in accordance with project-specific requirements.
Our areas of application
Our products are used in demanding industrial applications.
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Energy and power plants
Nuclear technology
Hydrogen and energy infrastructure
Chemical and process industries
Refineries and offshore facilities
Apparatus and mechanical engineering
Are you planning a pipeline construction project?
Nirotec supplies pipe fittings for standard and special requirements - with the necessary documentation, the right materials and the experience from over 35 years of industrial projects. Talk to us.
Find out more about Nirotec
Find out how we have been implementing sophisticated pipeline construction projects since 1989 – from one-off production to series production.
Frequently asked questions
Find answers to the most frequently asked questions about materials, standards, delivery times and certifications.










