High-quality carbon steel precision seamless tubes offer excellent plastic deformation and moderate compressive strength. They possess good usage performance and acceptable welding characteristics, commonly used in quenching and heat treatment conditions. Moreover, they are also chosen for nitriding treatment in the thermal processing aspect.

7Simn seamless steel pipe nitriding treatment refers to a method of organic chemical heat treatment on the surface of workpieces in an organic chemical heat treatment process, achieved by a certain substance at a certain temperature. Nitriding furnaces are used for various steel mechanical parts, vehicle exhaust manifolds, transmission gears, motorcycle brake pads, molds, etc., to perform gas nitriding heat treatment processes. In the field of non-ferrous metals, it can be applied to the bright air-free oxidation quenching of copper materials such as air conditioning copper tubes, copper coins, copper core wires, and copper bars under protective atmospheres. It can also be used for the air-free oxidation quenching heat treatment of thick-walled seamless pipes, short shafts, and various metal parts under vacuum pump N2 protection.