Design Features

Hollow alumina ceramic bolts (also known as retaining pins or bars) are specially designed for high-performance industrial applications, and 

their excellent mechanical properties, high temperature resistance and electrical insulation make them outstanding in a variety of demanding environments.

High-precision threads and smooth surfaces

These bolts feature a highly precise thread design, combined with a smooth surface finish, ensuring a stable and reliable connection and 

fastening.

High mechanical strength and wear resistance

The high hardness and strength of alumina (compressive strength up to 2000 MPa) allow the bolts to maintain their performance and shape 

under high pressure and high friction environments.

Excellent high-temperature resistance

Alumina ceramics can withstand temperatures up to 1650°C, making them suitable for high-temperature industrial applications such as 

furnace mounting and heat exchange systems.

Electrical insulation properties

The excellent electrical insulation properties make these bolts suitable for use in electrical equipment, effectively preventing current leakage 

and electrical faults.

Application areas

High-Temperature Industrial Equipment

Used in high-temperature environments, such as metallurgical equipment, heat treatment furnaces, and chemical reactors.

Precision Machinery and Equipment

Used in precision equipment to ensure the precise fixation of components, especially suitable for mechanical systems requiring high 

precision and stability.

Electrical and Electronic Equipment

Due to its high electrical insulation properties, it is suitable for the assembly of power systems and electronic equipment, ensuring the safe 

and stable operation of equipment.

Aerospace Industry

In the aerospace industry, used to fix critical components in high-temperature, high-pressure environments requiring high electrical insulation.