... products mainly include vacuum gas-quenchin furnace, vacuum high-pressure gas-quenching furnace, vacuum carburizing furnace, and vacuum annealing ... mainly qpplied to the quenching applications for alloy steel, alloy structure steel, die steel, high-speed steel, bearing steel ... sintering 7 Feature:quenching oil and gas quenching two functions, the application of a wide range of high universality; 8 ...