HARDUN series pit gas nitriding furnaces are used for gas nitriding heat treatment of various steel machine fittings, car fitting, motor brake disc ,etc.

They are used for increasing nitrogen content, hardness, wear ability, fatigue resistance, hot hardness.  

Linings of HARDUN series pit-type gas nitriding furnaces are made of high quality and economy energy composite material. The cover is made of fiber, it is a double water-cooled cover and it works with high efficiency and save energy, and it possesses good leak-proof ability.

Temperature of heating area is controlled by even voltage. This product possesses characteristics of even temperature, high carburizing speed and a long life.

There is a stainless vacuum pot.

There is microcomputer temperature control system to control technology craft automatically.