The column is completely covered, and there is a uniform temperature change, which expands the thermal radiation surface and improves the efficiency. It can also eliminate the friction heat caused by extrusion. According to the different temperatures required for production, it is composed of several connected strip heaters, which are connected by T2 copper radiator, and then installed with a cooling cover that can be fixed separately. It can be installed with fan connecting box and air outlet device, and the strip heater can be replaced separately. The highest temperature that the heater can withstand is 500°C, which is one of the most advanced heating and cooling devices for extruders and injection molding machines at home and abroad. This heater is recommended for mechanical processes that require very high temperature control : Stainless steel hoods are sheared, rolled and punched with stainless steel 304 material according to the size of the customer 's model. The thermocouple hole inlet, outlet and Huff port positioning. Then the heater is installed in the casing.