Alloy pipe is a type of seamless steel pipe, and its performance is much higher than that of ordinary seamless steel pipes. This is mainly due to the high content of alloying elements such as Cr in the alloy tube, which endows it with superior properties such as high temperature resistance, low temperature resistance, and corrosion resistance, which cannot be compared to ordinary seamless steel pipes. Therefore, alloy pipes have been widely used in various industries such as petroleum, aerospace, chemical, power, boiler, and military.