Plymouth Tube operates two continuous heat-treating furnaces for annealing their products, and the facility is certified as ISO/TS 16949:2009. They had been producing an exother mic atmosphere for annealing furnaces from a combination generator/steam-boiler system.

Today’s low-pressure carburizing process, like many thermal-treating processes, demands an atmosphere that is highly reproducible and highly controllable. The right carbon source for this process has been available for use since well before the vacuum heat-treating process was developed.