01 carbon-steel hostCarbon-steel host
Selected to meet project design basis, location and material requirements.
ReliableHydroformed
Hydroformed
MLP
for Geothermal
Protect geothermal pipework from aggressive brines, acids and condensate
Hydroformed mechanically lined pipe delivers a cost-effective, corrosion-resistant solution for the conditions geothermal assets actually face.
Discuss your fluid conditionsCorrosion resistance
where it matters.
Geothermal pipework can face high temperatures, chlorides, dissolved CO₂ and H₂S, low pH, oxygen ingress, solids and repeated thermal cycling. Proclad MLP places the selected corrosion-resistant alloy at the wetted surface, while a carbon-steel host provides structural strength.
01 carbon-steel host
02 high-value innerCRA liner
Matched to the actual fluid chemistry, temperature and corrosive operating envelope.
03 engineered interfaceContinuous contact
Controlled hydrostatic expansion creates close, stable fit along the pipe length.
Geothermal duty
The hardest duty may not be the steady state.
Materials must be selected for the complete operating envelope: start-up, steady state, shut-down, cleaning, oxygen ingress and chemistry excursions.
TemperatureHigh-enthalpy fluid and thermal cycling
ChemistryChlorides, CO₂, H₂S, acidity and dissolved oxygen
FlowTwo-phase behaviour, velocity, erosion and solids
LifecycleCorrosion allowance, inspection and intervention strategy
Technical advantage
Hydroformed for a controlled, high-integrity fit.
Proclad's process allows the liner to expand freely under controlled hydraulic pressure while preserving the host pipe's original mechanical properties.
Free-state liner expansion
The liner is expanded against the host pipe without relying on external deformation.
Engineered pipe ends
Controlled end geometry supports accurate fit-up, welding and field fabrication.
From well pad to reinjection
One corrosion-resistant platform, engineered around each duty point.
01Production & gathering lines
02Two-phase and brine service
03Steam, condensate & process piping
04Reinjection systems
Materials flexibility
Select the liner for the fluid - not the industry label.
Proclad can support a broad range of CRA liner grades. The right choice depends on the complete chemistry and operating envelope.
Request a materials review- 01Nickel-base alloys Options including Alloy 625 and Alloy 825 for demanding geothermal and temperature-sensitive applications.
- 02Austenitic stainless steels Grades such as 304L and 316L for appropriate lower-risk process conditions.
- 03Duplex & super duplex High-strength, corrosion-resistant options where performance and lifecycle economics align.
Qualification
Prove the solution against your geothermal duty.
A robust qualification programme should reproduce the relevant pipe geometry, liner alloy, welding route, loads and operating conditions.
✓ Fluid chemistry and corrosion review
✓ Project-specific liner and host-pipe selection
✓ Welding, fabrication and pipe-end qualification
✓ Dimensional inspection and NDT plan
Hydroformed MLP for geothermal
Practical answers for developers, operators, EPCs and well-design teams.
What is hydroformed mechanically lined pipe?
A mechanically lined pipe system with a CRA liner expanded into a carbon-steel host pipe.
How does MLP compare with solid CRA pipe?
It can offer an optimised balance of corrosion performance, structural strength and project economics.
How does MLP compare with weld overlay?
The preferred solution depends on fluid chemistry, pipe size, fabrication route and lifecycle requirements.
Which liner alloys are available?
Nickel-base alloys, austenitic stainless steels, duplex and super-duplex options can be considered.
What information is needed to assess an application?
Fluid chemistry, temperature, pressure, flow regime, pipe dimensions, design life and fabrication constraints.
Bring us your geothermal duty.
Share the chemistry, temperature, pressure, line size and design life. Proclad will help define the right corrosion-resistant solution and route to execution.
Email the geothermal team