The future development trend of stainless steel pipes in China
Development trend one
In view of the use environment, designing target materials is an inevitable trend in the development of stainless steel pipes, such as designing pipes for seawater environments to achieve resistance to pitting corrosion and stress corrosion cracking in seawater use environments; such as designing pipes for high-oxygen water environments; designing higher Pipes with creep resistance and radiation resistance, such as designing pipes with resistance to high-temperature steam oxidation, can realize stainless steel pipes with different properties, such as high strength, high plasticity, high toughness, high corrosion resistance, and high purity.
Meeting the needs of various industries and developing new materials in response to different environments are inevitable requirements for the development of stainless steel pipes. According to the national science and technology plan, the main solutions are:
Special environments such as transportation and handling of dangerous goods
Exhaust gas treatment and other harsh environments
Ultra-supercritical and other high temperature environments
Oil and gas development requires high-pressure and highly corrosive environments
Biocompatibility and other antibacterial environments
High purity usage environment
Developing steel types from the source to meet different environments and solving various performance and high purity requirements of stainless steel pipes are requirements for the future development of stainless steel pipes.
Development trend two
Innovative technology, energy conservation and emission reduction to achieve green enterprises and green products are the main themes of the development of stainless steel pipes. Process innovation refers to the process of research, development, mass production and commercialization of new technologies, including existing or innovative products.
Major innovations in processes can lead to fundamental shifts in the economic system of an industry. For example, the cold extrusion rolling technology mentioned earlier can save more than 50% of electricity. The rolling process does not use rolling oil, reduces the number of pickling passes, and can achieve large deformation and increase the yield rate. These are all untapped trends. The performance of the product is better than that of the current rolling and drawing process products. It can achieve the specified grain size according to the user's product requirements and can achieve consistent longitudinal and transverse tensile properties. Consistent longitudinal and transverse performance is an important parameter for application design. The main application of steel pipes is transverse compression and tensile strength. When there is an abnormality in longitudinal and transverse strength, the thickness of the steel pipe will be selected according to the minimum value when selecting materials for design. When the longitudinal and transverse directions are consistent, it will be sufficient. Saving the consumption caused by heterogeneous differences is an important contribution not only to the enterprise but also to the green and energy-saving development of the entire society.
