Alloy pipe is one kind of seamless steel pipe which has a much higher performance than the carbon steel seamless pipe. Because alloy seamless pipe contians more Cr than carbon seamless steel pipe which contribute to stronger resistance of high temperature, low temperature and corrosion. Alloy seamless pipe can be divided into structural seamless pipe and high-pressure and heat-resistant alloy pipe. The difference is based on the alloy pipe production standards and its application industry. The alloy pipe annealing, quenching and tempering can change the pipe emchanical properties so as to achieve the required processing conditions. Due to its changeable mechanical properties and high resistance in different conditions, alloy pipe is widely used in petroleum, aerospace, chemical, power, boilers, military and other industries.
