Firstly, we need to know the basic characteristics of some good single headed pipes, and summarize them into two aspects:
1. The electrical performance of the single headed tube operates normally
After being powered on, the power of a single headed tube remains stable within a certain tolerance range during frequent startup, shutdown, and long-term continuous operation, without generating any instantaneous power shocks.
2. The high heat conversion rate is the most crucial aspect of electric heating tubes.
High thermal efficiency, energy-saving by more than 30% compared to general metal heating materials, and extremely fast heating speed. Carbon fiber heating materials are pure blackbody materials, which have the characteristics of rapid heating, small thermal hysteresis, uniform heating, long heat radiation transfer distance, and fast heat exchange speed. During the work process, the luminous flux is much smaller than that of the metal heating element's electric heating tube, and the electric heating conversion efficiency is over 95% (that is to say, when you use a 1000W ordinary electric heating tube, you only need 700W when using a carbon fiber electric heating tube).
The most intuitive way to judge the quality of a single headed tube is to first wipe off the surface of the electric heating tube, then connect an AC 220V power supply, dry burn it in air, turn off the power after the surface turns red, and wait for the electric heating tube to completely cool down. Wipe it with a napkin, and there should be no black oxide powder on the white paper (not reacting with oxygen in the air), indicating that it is a high-quality single headed tube. On the contrary, it is considered inferior.