Non-Welded Press Fittings, metal-to-metal connections

Press in seconds without welding

PreFiS – Innovative Steel Tube Connection by Tube-Mac

PreFiS® by Tube-Mac® is a high-performance press fitting system designed for non-welded, metal-to-metal connections in demanding piping applications. Unlike traditional welded or threaded systems, PreFiS® eliminates the need for hot work, reducing installation time, costs, and safety risks.

With operating pressures up to 140 bar (2,000 psi), PreFiS® delivers exceptional reliability for critical systems such as high-pressure water mist fire suppression, CO₂ fire suppression, and high-pressure cleaning lines. Its axial swaging technology ensures a secure, leak-free connection without elastomer seals, making it ideal for environments where fire safety and long-term durability are essential.

Since its introduction in 1996, PreFiS® has been trusted in industries including marine, oil & gas, automotive, and petrochemical. Certified by leading authorities such as DNV, LR, and RINA, PreFiS® meets the highest standards for safety and efficiency worldwide.

Available in stainless steel and carbon steel, with sizes ranging from 10 mm to 88.9 mm tubes and ½” to 3″ pipes, PreFiS® offers unmatched flexibility for diverse applications. Combined with quick installation using specialized press tools, PreFiS® is the smart choice for modern piping systems.

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PreFiS®: The Fastest Way to Connect Steel Tubes –
No Welding, No Hassle

Fittings for every need – from standard sizes to fully customized solutions.

Turned parts

1. End plug
2. Straight nozzle connector
3. Straight coupling with or without stop
4. Female stud coupling
5. Male stud coupling
6. Reducing coupling

Forged parts

7. 90° nozzle adapter
8. Nozzle connector tee
9. Equal cross
10. Reduced cross
11. Equal tee
12. Reduced tee
13. 90° angle

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The PreFiS® Fitting Advantage

PreFiS® sets the standard for safe, efficient, and cost-effective piping solutions. With its non-welded design, installation is faster, cleaner, and requires no hot work permits.

Certified by leading authorities, PreFiS® delivers metal-to-metal sealing, exceptional durability, and proven performance in high-pressure environments. Perfect for marine, industrial, and fire protection systems, PreFiS® is the smart choice for modern piping projects.