Alloy pipe is a kind of seamless steel pipe. Alloy pipe is divided into structural seamless pipe and high-pressure heat-resistant alloy pipe. Mainly different from the production standards of alloy pipes and its industry, annealing and tempering of alloy pipes changes its mechanical properties. achieve the required processing conditions. Its performance is higher than that of ordinary seamless steel pipes in terms of variable utilization. The chemical composition of alloy pipes contains more Cr, and it has high temperature resistance, low temperature resistance and corrosion resistance.