High-Integrity Heat
Exchangers & Pressure
Equipment for the
World's Most
Demanding Industries

Safe Professional Innovative

For over 50 years, we've combined advanced process and mechanical design with precision manufacturing to build high integrity heat transfer and pressure equipment trusted in the harshest operating environments.

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Our Products

Our Services

Sectors We Cover

Industry Insights

Engineering Excellence for Critical Industries

Graham Hart Process Technology Ltd is a world leader in the design and manufacture of bespoke heat transfer and specialist pressure equipment. With more than five decades of experience, we engineer every unit to precise client requirements, ensuring optimal performance, safety and longevity in mission-critical environments.

Our team of process and mechanical engineers provide deep technical understanding, supported by advanced software, rigorous risk assessment and fully integrated digital management systems. Whether your operation faces extreme pressures, aggressive media or stringent regulation, our equipment is built to deliver long-term reliability and confidence.

Since 2016, we have maintained a 100% On Time In Full delivery record—demonstrating our commitment to quality, professionalism and customer success.

Single Suppy Chain

Design, procurement, manufacture, testing and certification all in-house.

Precision Engineering

From advanced process modelling to large-scale machining up to 2.3 m diameter and 460 mm thick.

Proven Reliability

Over a decade supplying subsea heat transfer innovations.

Global Trust

Preferred partner to leading organisations including Airbus, BOC, GE, and Tata.

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Heat Exchanger Solutions

Shell & Tube Heat Exchangers

Robust and versatile units engineered for high-pressure, high-temperature and corrosive environments.

Air Cooled Heat Exchangers

Efficient cooling systems ideal for water-scarce locations and remote operations.

Crossflow & Heat Recovery Systems

Custom designs for stack gas recovery, combustion air preheating and process fluid heating.

Bespoke Engineered Equipment

Fully customised heat transfer solutions designed around your process, duty and operational environment

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Sectors We Serve

Engineered for the Harshest Industrial Environments

Our equipment is built to perform in the most challenging global applications — from subsea to nuclear, from sterile pharmaceutical environments to corrosive chemical processing.

Industry Sectors: