High pressure rigid tubes Up to 100,000 psi (6,895 bar)
High Pressure
Applications
- Hydrogen
- Waterjet
- Waterblast
- Oil & Gas
- Production lines
- Aerospace sector
- Test benches
Description
Elite HPT tubes are made in Europe.
Crafted from high-quality stainless steel, they can be used at pressures of up to 100.000 psi (6.895 bar). They are seamless, cold-drawn, and heat-treated for high strength and corrosion resistance. We custom-make nipples with cone and thread for tubes systems designed for medium and high-pressure applications.
Elite HPT tubes undergo various specific quality checks: dimensional inspections, eddy current tests, metallographic and technological tests, intergranular corrosion tests.
Features
- Standard material 316L (for tubes up to 60,000 psi / 4,137 bar)
- Other materials available upon request (such as Hastelloy, Inconel, Duplex, Superduplex, Monel and more)
- Sizes from 1/4", 3/8", 9/16", 3/4" and 1"
- Maximum working pressure from 10.000 psi (690 bar) to 100.000 psi (6.895 bar)
- Rod lengths from 6/7 meters (custom lengths available)
Advantages
- Made in Europe
- Seamless
- Weatherproof
- Full traceability
- ISO 9001 : 2015 certified quality system
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High pressure tubing and fittings: how the system works
A high pressure system (test benches, waterjet, oil & gas, hydrogen, research) needs tubing, fittings and valves designed as a single system. High pressure rigid tubes are seamless stainless steel, cold drawn and heat treated; the fittings seal metal to metal between the cone of the tube and the seat of the fitting, without O-rings, and can be assembled and disassembled an unlimited number of times.
The coned and threaded connection
The end of the tube is coned and threaded; a collar is screwed onto the thread and the gland pushes the tube cone against the fitting seat. MP and HP fittings have a weep hole that shows any leak immediately. Lines subject to vibration use anti-vibration assemblies. We make custom coned and threaded nipples for medium and high pressure systems.
Pressure classes and connections
| Connection | Maximum working pressure | Typical uses |
|---|---|---|
| NPT | 15,000 psi (1,034 bar) | Instrumentation, medium pressure circuits, connection to standard components |
| MP (medium pressure) | 20,000 psi (1,380 bar) | Hydrostatic testing, technical gases, hydrogen |
| HP (high pressure) | 100,000 psi (6,900 bar) | Waterjet, burst test benches, research, ultra high pressure |
Fittings and adapters are available from 1/8" to 1", entirely in AISI 316 (other materials on request) and compatible with all liquids and gases.
High pressure tubing: sizes and materials
| Feature | Elite HPT tubing |
|---|---|
| Working pressure | from 10,000 psi (690 bar) to 100,000 psi (6,895 bar) |
| Outside diameters | 1/4", 3/8", 9/16", 3/4" and 1" |
| Standard material | 316L stainless steel, for tubes up to 60,000 psi (about 4,137 bar) |
| Other materials | Hastelloy, Inconel, Duplex, Superduplex, Monel and more on request |
| Lengths | 6–7 m bars, custom lengths |
| Inspections | Dimensional, eddy current, metallographic and technological tests, intergranular corrosion; full traceability, ISO 9001:2015 quality system |
| Origin | Made in Europe |
Dedicated tubing is available for hydrogen: see the hydrogen tubing catalogue in the download section of this page.
Applications
- High pressure hydrostatic testing of pipelines, conduits, valves, cylinders and tanks
- Leak testing, burst test benches, instrument calibration
- Technical gases and hydrogen, accumulator charging
- Waterjet and high pressure flushing units
- Wellhead control panels, valve actuators, tensioners and torque wrenches
How to choose high pressure tubing and fittings
- Maximum pressure of the system, with the required safety margin: it defines the NPT, MP or HP class.
- Fluid: water, oil, technical gases or hydrogen, which may require dedicated tubes and materials.
- Flow: it determines the inside diameter of the tube.
- Environment: corrosive fluids or offshore use require special materials such as Duplex, Superduplex or Inconel.
- Vibration: use anti-vibration assemblies.
Our fittings and adapters are an alternative to Haskel, Maximator, BuTech and Autoclave. Complete the system with high pressure valves and fittings and adapters.
High pressure tubing and fittings FAQ
What pressure can high pressure tubing withstand?
Elite HPT tubes work from 10,000 psi (690 bar) up to 100,000 psi (6,895 bar), depending on diameter and wall thickness.
What is the difference between MP and HP connections?
MP (medium pressure) connections reach 20,000 psi (1,380 bar), HP (high pressure) up to 100,000 psi (6,900 bar); both use the coned and threaded metal-to-metal seal.
Do high pressure fittings need seals?
No: the seal is metal to metal between the tube cone and the fitting seat, without O-rings, and fittings can be disassembled and reassembled several times.
Is there an alternative to Autoclave and Maximator fittings?
Yes: the fittings and adapters we supply are an alternative to Haskel, Maximator, BuTech and Autoclave.
Why choose Interfluid
- Elite HPT tubing and PHP fittings usually in stock
- Custom coned and threaded nipples
- Design and assembly of test benches and units
- Technical support in choosing pressure class and materials
Tell us pressure, fluid and diameter – request a quote.
Need to prepare tubing on site?
To cone and thread high pressure tubing directly on site we rent out a coning and threading machine: coning and threading in a single clamping, tubing from 1/4" to 1", left-hand thread, tools for your sizes included. Units for testing the lines are also available for rent, with liquids up to 5,000 bar and with gas up to 2,069 bar.
Choose the rigid tubes you need and go directly to Fluid-Hub.net
| Brand | Average stock | Discover online availability |
|---|---|---|
| Elite HPT | ✅ Usually available | ⌛ Soon online |
Download
- Elite HPT high pressure rigid tubes catalogueDownload Elite HPT high pressure rigid tubes catalogue
- Elite HPT high pressure rigid tubes for hydrogen applicationsDownload Elite HPT high pressure rigid tubes for hydrogen applications
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