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Our company

Since 1980 THT have supplied a wide range of heat treatment and surface engineering processes including vacuum hardening and plasma nitriding to key sectors of industry.

Quality of process and delivery performance are key to providing our customers with the best service possible. ISO 9001 and AS 9100 accreditation means our quality objectives meet or exceed our customers expectations.

We can advise the best process route for your material or application. We can work with your existing heat treatment specifications, submit your spec or enquiry to us.

Heat Treatment and Surface Engineering processes for key sectors of UK industry.
Vacuum Processing and Plasma Processing for heat treatment and surface engineering.

Harden and Temper, Age harden (and solution treatment), Anneal (inc bright anneal for stainless),
Stress Relieve and Stress Temper, Normalise. Special process for subsequent Nitride/Coating/Wire, more...

Plasma Nitride, Nitro-carburise, PlasOx (Nitro-carburise + Oxidation), Ion Nitride, Cryogenics, QPQ, more...
Clean pollutant free plasma processing is environmentally friendly with no emmissions. 

Quality of process and Delivery Performance are key objectives of AS 9100 & ISO 9001 

Vacuum Furnace being loaded