Will the surface of the electric heating tube conduct electricity?

We have come into contact with some customers who often ask a question, will the surface of your electric heating tube be charged?

The customer who asked this question must have never touched the electric heating tube or rarely touched the electric heating tube. Below we first understand the structure of the electric heating tube:

The electric heating tube is a high temperature resistance wire uniformly distributed in a high temperature resistant stainless steel seamless tube, and the gap is densely filled with crystalline magnesium oxide powder with good thermal conductivity and insulation performance. This structure is not only advanced, high thermal efficiency, but also generates uniform heat. When there is current passing through the high-temperature resistance wire, the heat generated is diffused to the surface of the metal pipe through the crystalline magnesium oxide powder, and then transferred to the heated part or the air to achieve the purpose of heating.

Therefore, the surface of the heating tube is definitely not charged. Because between the metal shell and the resistance wire is filled with insulating magnesium oxide powder.

Therefore, the resistance wire only transmits heat through the magnesium oxide powder and does not transmit electricity, so the surface of the heating tube is not charged!