The most commonly used alloy heat-strength steel has good long-lasting plasticity, and the third stage of creep is started when the elongation reaches 3%-5%. Widely used in various heating surface pipes of thermal power, nuclear power and petrochemical. Application: Superheater tubes with a wall temperature below 580 °C, headers and steam pipes with a wall temperature below 570 °C.

The biggest advantage of the alloy tube is that it can be 100% recycled, in line with the national strategy of environmental protection, energy saving and resource conservation. The national policy encourages the expansion of the application field of high-pressure alloy tubes.

   At present, China's alloy tube consumption accounts for half of the total amount of steel, which is only half of that of developed countries. The expansion of the use of p22 alloy tubes provides a broader space for the development of the industry. According to the research of the alloy pipe branch of China Special Steel Association, the demand for high-pressure alloy pipe long products in China will increase by 10-12% annually.