Within the vast field of metal materials, stainless steel, with its unique corrosion resistance, high-temperature resistance, and excellent mechanical properties, has become an indispensable key material in many industrial sectors. Among the many varieties of stainless steel, 347 stainless steel and its derivative, 347 stainless steel seamless pipe, have secured a pivotal position in various industries, including the petroleum, chemical, nuclear power, and food processing, thanks to their outstanding comprehensive performance. 347 Stainless Steel Seamless Pipe Details
1. Commonly used standards for 347 stainless steel seamless pipe: ASTM A312, ASME SA312, ASTM 213M, ASME SA213, GB/T14976
2. Product specifications for 347 stainless steel seamless pipe: Outer diameter 10mm-762mm, wall thickness: 1mm-100mm.
3. Chemical composition of 347 stainless steel seamless pipe: (Carbon) ≤ 0.08, (Silicon) ≤ 1.00, (Manganese) ≤ 2.00, (Phosphorus) ≤ 0.035, (Sulfur) ≤ 0.030, (Nickel) 9.00-12.00, (Chromium) 17.00-19.00, (Niobium): 10*C-1.10
First, Basic Characteristics of 347 Stainless Steel
347 stainless steel belongs to the austenitic stainless steel family, and its standard designation is UNS S34700, which is a niobium-stabilized stainless steel. Compared to the more common 304 stainless steel, 347 stainless steel, thanks to the addition of niobium, offers superior oxidation resistance, high strength, and excellent toughness, enabling it to excel in high-temperature, high-pressure, and corrosive media.
Second, Characteristics and Applications of 347 Stainless Steel Seamless Pipe
As a key processing form of 347 stainless steel, 347 stainless steel seamless pipe utilizes a seamless production process to ensure a smooth, weld-free inner wall, further enhancing its pressure-bearing capacity and corrosion resistance. This type of pipe not only inherits all the advantages of 347 stainless steel but also boasts a seamless structure, offering increased reliability and service life when withstanding high pressure, high temperature, and corrosive fluids.
1. Oil and Gas Industry: In the extraction and transportation of oil and gas, 347 stainless steel seamless pipe, due to its excellent high-temperature and corrosion resistance, is widely used in oil well casing, gathering pipelines, and refinery equipment, ensuring the safe and efficient utilization of oil and gas resources.
2. Chemical Industry: In chemical production, the presence of corrosive media places extremely high demands on piping materials. 347 stainless steel seamless pipe, with its excellent chemical corrosion resistance, has become a key component in chemical equipment, reactors, piping systems, and other applications, ensuring the stable operation of chemical production.
3. Nuclear Power Plant Construction: Nuclear power plants place extremely stringent demands on the material’s resistance to high temperatures, radiation, and corrosion. Due to its excellent comprehensive performance, 347 stainless steel seamless pipe is widely used in nuclear power plant cooling systems, steam generators, reactor structures, and other areas, providing a solid material foundation for nuclear power safety.
Third, the Production Process of 347 Stainless Steel Seamless Pipe
1. Raw Material Preparation: High-quality 347 stainless steel billets are selected to ensure that the chemical composition and physical properties of the steel pipe meet standard requirements.
2. Hot-Rolling Piercing: After the melted billet is heated to the appropriate temperature, it is pierced through a hot rolling mill to form the initial tubular structure.
3. Cold Drawing or Cold Rolling: Hot-rolled and pierced steel pipes are subjected to multiple cold drawing or cold rolling processes to gradually reduce the pipe diameter and improve the pipe’s precision and surface quality.
4. Heat Treatment: Cold-worked steel pipes undergo solution treatment and stabilization to eliminate processing stress and improve the material’s overall performance.
5. Inspection and Testing: Finished steel pipes undergo comprehensive quality inspections, including but not limited to chemical composition analysis, mechanical property testing, and intergranular corrosion testing, to ensure that each pipe meets standard requirements.
Fourth, Market Status and Development Trends of 347 Stainless Steel Seamless Pipes
- Technological Innovation: With the continuous advancement of materials science, the research and development of 347 stainless steel seamless pipes is moving towards higher strength, higher corrosion resistance, and better processing performance. By optimizing alloy composition and improving production processes, the overall performance of the product is continuously improved to meet diverse market demands.
- Intelligent Production: With the rapid development of intelligent manufacturing technology, the production of 347 stainless steel seamless pipes is gradually becoming automated and intelligent. By introducing advanced production equipment and technologies, we improve production efficiency and reduce production costs. Furthermore, leveraging technologies such as big data and the Internet of Things (IoT) enables precise control and remote monitoring of the production process, enhancing product quality and service levels.
- Customized Services: Faced with increasingly fierce market competition, providing personalized and customized services is key to enhancing a company’s competitiveness. Based on specific customer needs, we offer comprehensive solutions from product design and production to after-sales service to meet their diverse needs.
In summary, 347 stainless steel seamless pipe, with its unique performance advantages and wide range of applications, plays a vital role in global industrial development. With continued technological advancement and market development, 347 stainless steel seamless pipe will usher in even broader development prospects, contributing to global industrial upgrading and sustainable development.
Post time: Sep-15-2025