What material is the electric heating tube made of? What's in it? What are the main technical difficulties?

The most common and efficient double-ended pipes in electric heating tube are: 304 stainless steel pipe for the shell, nickel-chromium alloy material for the heating body, and magnesium oxide (Ingrid material often heard by consumers) for insulation, with stable safety and insulation performance, high speed and high thermal efficiency. The main technical difficulties are soaking in water for a long time, the temperature difference changes greatly, it is easy to crack, the heating temperature is high and concentrated, and it is easy to produce scale. Common faults are corrosion and scaling. \ x0d \ x0d \ Sony Ericsson intelligent variable-frequency constant-temperature instant electric water heater, China's innovative patented technology-3dmax integrated speed heating system, infrared unidirectional water flow detection starting device, energy saving and emission reduction, stylish and compact, low-carbon, environmentally friendly, high-tech and intelligent, safe and fast! 2 seconds of hot water, 8 seconds of constant temperature. \ x0d \ x0d \ The premise of the current standard is that the grounding wire is reliable, but many domestic families have no grounding wire at all, which means that the cornerstone of this standard does not exist at all. Most people in China don't know about it. Therefore, as a water heater enterprise, it is the minimum social responsibility to produce water heaters that meet the standards, and the fundamental purpose is to bring consumers a safe and comfortable bath. \ x0d \ x0d \ instant electric water heater, made in China-more suitable for the environment in China.