Shanghai Pollux Group Co., Ltd.

Cartridge Heaters

Cartridge Heaters also called Single-head Heating Tube

Cartridge heater is a tubular, heavy-duty, industrial Joule heating element (resistance), used in the process heating industry, usually customized and manufactured to a specific power density according to its intended application. They are highly compacted and have a surface power density of up to 50 W/cm².

It can be used to heat any kind of substance or material, such as oil, air, or sugar. However, a common application is plastic pellets, which are melted to form molded plastic parts. An example of such a process is the "hot runner" process. Cartridge heaters are similar in structure to tubular heaters but tend to have a higher power density.


1. Mould Heating

2. Heating System of Plastic Machinery

3. Pharmaceutical Production Line

4. Heat Treatment Test in Laboratory

5. Chemical Industry

Cartridge Heaters are typically inserted into drilled holes to heat platens and molds or used as liquid immersion heaters.

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