Due to different high temperature wear protection tubes and surface modification measures for different temperature ranges and measured media, the composite tube type solidified structure is suitable for petrochemical and coal conveying systems with serious protection of the protective tube. Temperature measurement of fluidized bed boilers, cement clinker and refractory materials such as flowing powders and materials.Further improve the service life of the thermocouple.Its performance is better than the current wear-resistant thermocouple, won the praise of users.The products with many high-tech products are at the international advanced level. The wear-resistant materials of special process completely solve the service life of the thermocouple of the circulating fluidized bed boiler without affecting the temperature hysteresis. The protective casing has resistance. Grinding, high temperature oxidation resistance, corrosion resistance, liquid iron powder, limestone and other cement materials corrosion, anti-scour, vibration resistance, many technologies, so that the temperature measurement thermocouple life is generally one to two years.