The future development trend of China’s stainless steel pipe
1. Development trend 1: Demand-oriented
For the use environment, designing target materials is an inevitable trend in the development of stainless steel pipes. For example, designing pipes for seawater environments to achieve resistance to pitting corrosion and stress corrosion cracking in seawater environments; such as designing pipes for high-oxygen water environments; design higher Pipes with creep resistance and radiation resistance, such as high-temperature steam oxidation-resistant pipes, can be used to achieve stainless steel pipes with different properties, such as high strength, high plasticity, high toughness, high corrosion resistance, and high purity.
To meet the needs of various industries and develop new materials in response to different environments is an inevitable requirement 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 treatment of dangerous goods, harsh environments such as waste gas treatment, high-temperature environments such as ultra-supercritical, high-pressure, high-corrosion environment, biocompatibility and other antibacterial environments, high purity Use environment. The development of steel grades from the source, meeting different environments, and solving the performance and high purity requirements of stainless steel pipes are the requirements for the future development of stainless steel pipes.
2. Development Trend Two: Process Innovation
Innovative technology, energy saving and emission reduction to achieve green enterprises and green products are the main theme of the development of stainless steel pipes. Process innovation refers to the process of production and commercialization of research and development of new technologies, including existing or innovative products.
Major innovations in process will lead to fundamental changes in the economic system of the industry. For example, cold extrusion rolling technology can save more than 50% of electricity. Rolling oil is not used in the rolling process, the number of pickling passes is reduced, and the large deformation and the improvement of the yield are all undeveloped development trends. The performance of the product is better than that of the current rolling and drawing process. It can achieve the specified grain size according to the user’s requirements for the product, and can achieve the same longitudinal and lateral tensile properties. Consistent vertical and horizontal performance is an important parameter for application design. The application of steel pipes is mainly for horizontal compression and tensile strength. When vertical and horizontal strengths are different, the material used in the design will select the thickness of the steel pipe at the minimum value. When the vertical and horizontal directions are consistent, it can be Saving the consumption caused by the difference of the opposite sex is not only an important contribution to the green energy-saving development of the enterprise but also to the entire society.
3. Development Trend Three: Management Innovation
“Digital Intelligent Factory”, “Process Intelligent Service Platform”, “Intelligent Safety Management”, and “Computer Process Aided Design” are all platforms for management innovation, such as Songyang, Shangshang Desheng, through computer simulation technology, The cold working plastic deformation control process is realized, and the product performance is improved. Through intelligent management, they have brought the company’s production cost management, product quality, employee compensation level and safety production to a higher level, and will realize that domestic stainless steel pipe enterprises gradually move toward unmanned chemical factories, intelligently control quality, and intelligently manage. Process, no casualties, intelligent era of goods delivery on schedule.
4. Development Trend 4: Green Development
In the era of increasingly stringent national and local environmental protection policies, the zero discharge of waste liquid, waste water, solid waste and NO2 waste gas generated in the pickling process of stainless steel pipes is an inevitable trend of future development. Nowadays, microfiltration, electrodialysis, etc., membrane technology and The development of technologies such as limit crystallization has provided the technical feasibility of achieving zero emissions for the surface treatment of stainless steel pipes. At the same time, the application of zero-emission technology is not only a simple means to ensure environmental protection compliance and social benefits in the production of stainless steel pipes, but also the recycling and reuse of waste liquid, wastewater, and sludge has practical economic benefits, which can reduce the production of stainless steel pipe manufacturers. Cost has considerable economic significance.
5. Development Trend 5: Industrial Chain Extension
Enterprise product extension processing chain advances and retreats with the demand side. For example, Foshan Yundaxing Metal Technology Co., Ltd. produces 445J2 ferritic material large-scale reduced diameter pipes. Starting from extension processing, they are used for air conditioners. Just make tens of millions. For example, Jingning Chuangyue Metal produces small-diameter thin-walled coils with a wall thickness of more than 0.4mm, a single length of several kilometers, and a pipe diameter of more than 6mm, which are used for heat exchanger tubes and signal tubes with thousands of tons per year. For example, Taiyuan Zhongjin Tianwei, they produce high-precision small-diameter special-shaped pipes for national defense equipment with high added value. For example, Foshan Xinyuantong Metal Products Co., Ltd. focuses on the development of special-shaped cross-section pipes, and cooperates with foreign companies. It has thousands of tons per year. Anti-dumping and tariff increases have nothing to do with it. For example, Wenzhou Zhengkang International and Shanghai Weigesi focus on pipe fittings and water pipes, and they have no worries about the market. Companies like this are also the direction of future development.