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Metal Fabrication
Select a step where Air Liquide intervenes in your value chain.

Heat treatment

Air Liquide’s extensive technical knowledge of heat treatment processes, coupled with our safe, reliable and customised gas solutions, will help you optimise your operations and manage costs. ALNAT™, Air Liquide’s dedicated offer for heat treatment applications, includes the delivery of gases and gas handling equipment, as well as a range of services relating to the generation, use and control of atmospheres in industrial heat-processing furnaces.

Air Liquide also produces various hydrogen gas mixtures in a wide range of balances and packaging options, and all related gas handling equipment. These gas mixtures are used specifically to modify structure characteristics of steel, such as hardness and flexibility.



Air Liquide supplies a wide range of gas handling equipment designed to deliver gas safely to your application.


Our ALNAT™ supply solutions will help you ensure a controlled atmosphere in terms of safety, efficiency and reliability in heat-treating applications, including annealing, brazing, carburising, cryogenic treatments and more.