JB/T7951 -1999 "Test Method for Cooling Performance of Quenching Medium" is applicable to both oil-b... (more…)
2025-05-02 ChengChi 5 cooling performance test methods oil-based quenching medium water-based quenching medium standard determination industrial quenching oil nickel alloy
ISO9950-1995. IndustrialQuenchingOils -determinationofCoolingCharacteristcs -alloyprobeTestMethodJIS... (more…)
2025-03-25 ChengChi 6 quenching cooling standard international standard quenching oil cooling characteristics determination method Japanese industrial standard heat treatment oil aerospace department standard petrochemical industry