Brief introduce of pit type nitriding furnace : Pit type gas nitriding furnace is mainly used for carbon steel parts gas nitriding, mould quenching and other heat treatment . The furnace is equipped with drip device, also can be used for gas nitrocarburizing (soft nitriding) heat treatment. When doesn’t feed into ammonia gas and use drip devices, can be used as a general well type tempering furnace.