The single headed pipes on the market are dazzling, but the quality of single headed pipes is the most important concern for customers. Below are the methods to distinguish the quality of single headed pipes:
A. Electrical strength: The main factors affecting the electrical strength of a single headed tube include the thickness of the insulation layer, the quality of the insulation layer's raw materials, the length of the electric heating tube, the radius and number of bends.
B. Insulation: The main factor affecting the insulation of a single headed tube is the sealing process of the electric heating tube. A good electric heating tube can generally achieve over 1000 megaohms.
C. Leakage current: It is mainly related to the temperature during the use of a single headed tube, the voltage used by the single headed tube, and the heating length of the single headed tube. This is also an important assessment indicator for high-temperature single headed tubes.
D. Corrosion resistance: It is a common problem encountered in water heating electric heating tubes and barbecue electric heating tubes. In addition to reasonable material selection, it is also related to the heat treatment of the electric heating tube and the surface condition of the electric heating tube.
E. Power accuracy: mainly related to the quality of the resistance wire and the manufacturing process level of the factory. Qualified electric heating tubes need to undergo a temperature coefficient test before mass production to determine the cold resistance within the qualified power range.
F. Lifetime: The lifespan of a single ended tube is not only related to the quality of the resistance wire, but also to factors such as the quality of magnesium oxide powder and the selection of resistance wire diameter. For high-temperature electric heating tubes, single headed tubes should be used to manufacture electric heating tubes with a surface load of less than 8W/CM2. Therefore, when selecting the diameter of the resistance wire, the surface load of the resistance wire needs to be calculated to meet the service life requirements.
The above are all teaching you how to judge the quality of a single head tube.