... mainly qpplied to the quenching applications for alloy steel, alloy structure steel, die steel, high-speed steel, bearing steel,stretch alloy,and stainless steel etc 3 and also applied to ... mainly qpplied to the quenching applications for alloy steel, alloy structure steel, die steel, high-speed steel, bearing steel,stretch alloy,and stainless steel etc and also applied to the ...