304 stainless steel flange explosion-proof submersible heating tube, thermal oil boiler electric heating rod, water tank heating tube (220V)
In response to your search for "304 stainless steel flange explosion-proof submersible heating tube, thermal oil boiler electric heating rod, water tank heating tube (220V)", these products are core heating elements in the industrial heating field. Based on the production standards and market supply of mainstream industrial electric heating equipment in China, the following core technical parameters, application scenarios, and procurement selection guide have been compiled for you:
I. Core Product Technology and Specification Parameters
1. 304 Stainless Steel Flange Explosion-Proof Submersible Heating Tube
Structure and Material: Multiple U-shaped tubular electric heating elements are welded onto a flange plate to form a centralized heating device. The standard tube body is made of 304 stainless steel, which can be upgraded to 316L or 310S material in highly corrosive environments.
Explosion-Proof and Safety Features: The explosion-proof rating typically ranges from ExdIIBT4 to ExdIICT4, making it widely applicable in flammable and explosive places such as chemical, petroleum, and natural gas industries. It is equipped with over-temperature and low-liquid-level interlock protection devices that immediately cut off the power supply in case of abnormalities.
Electrical Parameters: Supports 220V single-phase or 380V three-phase voltage, with a power range typically from 3KW to 15KW and above. The surface load is designed to be low, effectively preventing local high-temperature coking of the medium.
2. Thermal Oil Boiler Electric Heating Rod
Working Principle: The electric heating rod is directly inserted into the organic carrier (thermal oil) for heating, and a circulating oil pump is used to force the thermal oil to undergo liquid-phase circulation, transferring heat to the heat-using equipment before returning for reheating. It features "low pressure and high temperature" characteristics, capable of achieving working temperatures of 280°C to 320°C at lower operating pressures.
Typical Applications: Mainly used for high-pour-point viscous oil wells, heavy oil storage tanks, fuel oil heating, and constant temperature maintenance of various industrial reactors, offering advantages of high efficiency, energy saving, and unattended automatic operation.
3. 220V Water Tank Heating Tube (Immersion Heater)
Product Features: Suitable for preheating and constant temperature maintenance of various stainless steel water tanks, industrial water pools, and boiler water. The interior is filled with high-purity electric-grade magnesium oxide powder, with insulation resistance required to be ≥30MΩ and dielectric strength of 1500V AC/1min.
Installation and Use: Mostly flange connection or threaded connection (such as G2" thread). During installation, ensure that the heating part is completely immersed in the liquid, and dry burning is strictly prohibited. When used in metal containers, effective grounding must be ensured.
II. Core Application Scenarios
Such heating equipment is widely used in the following industrial fields:
Chemical and Petroleum: Heating of chemical materials, heating and viscosity reduction/thermal insulation of hydrocarbons (heavy oil, fuel oil, thermal oil, paraffin, etc.).
Industrial Water Treatment: Heating of process water, superheated steam, molten salt, nitrogen (air) and other fluids, as well as constant temperature heating of large water tanks and boilers.
Explosion-Proof Places: With advanced explosion-proof structures, it can be safely applied in hazardous areas with explosive gases such as chemical, military, offshore platforms, ships, and mining areas.
III. Procurement and Selection Pitfall Avoidance Guide
When contacting source manufacturers (such as electric heating appliance factories in Yancheng, Taizhou, Yangzhou, Jiangsu) for procurement, it is recommended to confirm the following parameters:
Clarify Working Condition Parameters: Provide the manufacturer with accurate heating medium type (water, thermal oil, acid/alkali solution, etc.), required power (KW), working voltage (220V/380V), and specific dimensions of flange or thread.
Verify Explosion-Proof Qualification: If the equipment is used in flammable and explosive areas, be sure to require the manufacturer to provide a nationally recognized explosion-proof certificate and confirm that the explosion-proof rating (such as ExdIIBT4) meets the on-site safety requirements.
Pay Attention to Safety Interlock Systems: High-quality industrial heaters must be equipped with PID temperature controllers, over-temperature alarms, low liquid level/oil shortage alarms, and automatic power-off functions to prevent dry burning or medium carbonization damaging the tube body.
Safe Operation Specifications: For 220V or 380V submersible heating tubes, strictly distinguish between live wire and neutral wire (220V) or three-phase live wires (380V) during wiring. After use, wait 3-5 minutes for cooling before removal, and wipe the tube body with a towel to extend its service life.
