Alloy tube is a kind of seamless steel tube, divided into structural seamless tube and high pressure heat resistant alloy tube. Mainly different from the production standards and industry of alloy tubes, annealed and tempered alloy tubes change the mechanical properties. Meet the required processing conditions. Its performance is higher than that of ordinary seamless steel pipe, the chemical composition contains more Cr, so it has high temperature resistance, low temperature resistance and corrosion resistance. Ordinary carbon seamless tubes contain no alloy or a small amount of alloy. Alloy tube is widely used in petroleum, aerospace, chemical, electric power, boiler, military and other industries, because the mechanical properties of alloy tube are variable, easy to adjust.

Alloy steel pipe is mainly used in power plant, nuclear power plant, high pressure boiler, high temperature superheater, reheater and other high pressure and high temperature pipes and equipment. It is made of high quality carbon steel, alloy structural steel and stainless heat-resistant steel by hot rolling (extrusion, expansion) or cold rolling (drawing).