The quality of the melt-blown cloth heating tube depends on the life:

In addition to the quality of the resistance wire, the life of the heating tube is also related to the quality of the magnesium oxide powder and the selection of the diameter of the resistance wire. For high-temperature heating pipes, Qiaohua Electric Appliance Factory can manufacture heating pipes with a surface load below 8W/CM2. When selecting the diameter of the resistance wire, the surface load of the resistance wire needs to be calculated to meet the life requirement.