Stainless steel boiler electric heating rod DN40/50 water tank threaded heating tube heat transfer oil electric heating tube 220V 380V
The "stainless steel boiler electric heating rod DN40/50 water tank threaded heating tube heat transfer oil electric heating tube 220V 380V" you mentioned belongs to the classic threaded (screw-type) heating tube in the industrial heating field. Based on relevant market and product information, here are the core parameters, application scenarios, and selection considerations for this specification of heating tube:
1. Core specifications and material parameters
Installation interface: Mainly compatible with DN40 (about 1.5 inches) and DN50 (about 2 inches) threaded interfaces. Common designs include hexagonal head threads for easy installation with a wrench directly into the threaded hole reserved in the water tank or boiler, making installation very convenient.
Working voltage: Supports two conventional industrial voltages: single-phase 220V and three-phase 380V. 380V is typically used for higher power configurations, while 220V is more common for small to medium power equipment.
Material selection: Conventionally made of SUS304 stainless steel, offering good corrosion resistance and thermal conductivity. For poor water quality or special media, materials such as 316L or titanium alloy can also be customized as needed.
Tube dimensions: The outer diameter of the heating tube is usually around 8mm, with lengths ranging from 220mm to over 400mm depending on power.
2. Power configuration and wiring specifications
Power range: The power of this specification of heating tube varies widely, with common single-tube powers ranging from 1.5KW, 3KW, 4.5KW, 6KW, 9KW to 12KW, meeting the heating needs of different water tank volumes and boilers.
Wiring methods:
220V models: Typically connect one live wire + one neutral wire (low power can be directly equipped with a plug, high power needs to be connected to an air switch).
380V models: Must be connected via an air switch to any two live wires of the three-phase power (or three live wires, depending on the internal star/delta connection).
3. Main application scenarios
This type of threaded heating tube has a compact structure, high thermal efficiency, and rapid heating, widely used in the following scenarios:
Water tanks and boilers: Liquid heating in air energy engineering water tanks, steam generators, industrial water tanks, boiling water buckets, water boilers, and other equipment.
Heat transfer oil and mold temperature machines: Heating of media requiring precise temperature control, such as heat transfer oil mold temperature machines and chemical reaction kettles.
Other equipment: Commercial and industrial equipment such as large rice steamers, sterilizers, and water baths.
4. Safety precautions
No dry burning: This immersion heating tube must be fully immersed in liquid before powering on. It is strictly forbidden to dry burn without water or when the liquid level is below the heating tube, as this can cause the heating tube to burn out instantly or even cause a fire.
Safety grounding: When used on metal water tanks or containers, ensure proper grounding protection of the equipment shell to prevent electric leakage accidents.
Power-off operation: Before installing, removing, or cleaning the heating tube, always cut off the power supply and wait 3-5 minutes for the tube to cool down before proceeding.
