Pipe fittings made of carbon steel, stainless steel, duplex, and special alloys.
Pipe fittings made of carbon steel, stainless steel, duplex stainless steel and special alloys.
We manufacture and supply seamless pipe fittings for demanding industrial plants – standard-compliant according to EN 10253, ASME B16.9, AD 2000, and EN 13480. In-house production in Unna, delivery throughout Europe.
Highest Quality Requirements
Custom Manufacturing
Special Materials
Nuclear Technology
We are strong where others have to pass
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 components for critical applications in the energy, process, and nuclear industries.
As a manufacturer and supplier with over 35 years of experience, we combine extensive in-house manufacturing capabilities with an international procurement network – for complete deliveries from a single source, full documentation, traceability, and project-specific testing.
Our manufacturing capabilities range from standard fittings to custom designs based on drawings. For projects with elevated requirements – be it according to KTA, RCC-M, NORSOK, or customer-specific specifications – we are the right partner.
This also includes the manufacture of elbows and tees according to EN 10253-2 Type B – heavy-wall designs with increased minimum wall thicknesses that not every manufacturer can supply.
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 elbows 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 buttweld fittings and piping components for industrial plants worldwide. Our range includes seamless tees, reducers, and special fittings produced by cold and hot forming – including elbows and tees according to EN 10253-2 Type B for safety-critical applications. We guarantee precise processing and documented traceability according to project-specific requirements.
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Elbows
Seamless elbows according to EN 10253 and ASME B16.9 in stainless steel, duplex, Super Duplex, and 6Mo
Tees
Seamless tees and branch connections – manufactured by cold and hot forming as well as IHU processes
Reducer
Concentric and eccentric reducers according to EN 10253 and ASME B16.9
Flanges
Flanges according to EN 1092-1 and ASME B16.5 – in all common pressure ratings, materials, and designs
Pipe Caps
End caps for pressure lines according to EN 10253 and ASME B16.9.
Pipes
Pipes for industrial piping systems
Special Fittings
Individual pipe fittings according to drawing and project-specific requirements.
Accessories
Accessories and supplementary piping components
Our Materials
Nirotec supplies pipe fittings in a wide range of materials – from standard steels in heavy-wall designs to high-alloy special materials:
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Unalloyed & low-alloy steels:
P235GH · P265GH · P355GH · P355NL · L245 · L360 · L415
also in particularly heavy-wall designs for high-pressure applications and apparatus engineering.
Heat-resistant steels:
16Mo3 · 13CrMo4-5 · 10CrMo9-10 · 11CrMo9-10 · P91 (X10CrMoVNb9-1)
for power plants, steam lines, 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 (UNS N08926)
Nickel alloys:
Alloy 625 (2.4856) · Alloy 825 (2.4858) · Alloy C-276 (2.4819)
Our Manufacturing Competencies
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Connecting Pipelines – since 1988
For over 35 years, Nirotec has been supplying pipe fittings for demanding industrial projects. Three plants in Unna, in-house forming production, mechanical processing, surface treatment, heat treatment, and seaworthy packaging – all from a single source.
Special Manufacturing Competencies
Our range includes seamless tees, reducers, and special fittings produced by cold and hot forming. We guarantee precise processing and documented traceability according to project-specific requirements.
Approvals & Certificates
Nirotec meets international requirements for industrial piping components: ISO 9001, AD 2000 (W0/HP0), ISO 19443 (from September 2026), CRN. Material testing, dimensional checks, PMI, NDT, and complete documentation are an integral part of our projects – standard or according to project-specific requirements.
Our Application Areas
Our products are used in demanding industrial applications.
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Energy and Power Plant Systems
Nuclear Technology
Hydrogen and Energy Infrastructure
Chemical and Process Industry
Refineries and Offshore Facilities
Apparatus and Mechanical Engineering
Are you planning a piping project?
Nirotec supplies pipe fittings for standard and special requirements – with the necessary documentation, the right materials, and over 35 years of experience in industrial projects. Contact us.
Learn more about Nirotec
Discover how we have been realizing demanding piping projects since 1988 – from individual custom production to series production.
Frequently Asked Questions
Find answers to the most common questions about materials, standards, delivery times, and certifications.