Alloy pipe (Alloy pipe) is a kind of seamless steel pipe. Alloy pipe is divided into structural seamless pipe and high pressure heat-resistant alloy pipe. It is mainly different from the production standard of alloy tube and its industry. Annealing and tempering the alloy tube changes its mechanical properties. Achieve the required processing conditions. Its performance is higher than that of ordinary seamless steel pipes. The chemical composition of alloy pipes contains more Cr, and it has high temperature resistance, low temperature resistance and corrosion resistance. Common carbon seamless pipes do not contain alloy components or have few alloy components. The reason why alloy pipes are widely used in petroleum, aerospace, chemical, electric power, boilers, military industries and other industries is because the mechanical properties of alloy pipes change and adjust.