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Industrial austenitic stainless steel pipe
  • Industrial austenitic stainless steel pipe
  • Industrial austenitic stainless steel pipe

Industrial austenitic stainless steel pipe

The application fields are very wide, mainly nuclear power, oil refining industry, atmospheric and vacuum equipment, catalytic cracking equipment, hydrocracking, hydrotreating equipment; Vinyl chloride production units, formaldehyde synthesis reactors, acetic acid and other organic acid production units in the petrochemical and chemical industry; The oil and gas industry; Pulp and paper industry; Urea industry and phosphate fertilizer industry in fertilizer industry; Seawater environment; Energy and environmental protection industry; Salt and chemical equipment for light industry and food industry, equipment for food and pharmaceutical industry, etc.
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Huzhou Xingchen Clean Precision Technology Co., Ltd is China Industrial austenitic stainless steel pipe Manufacturers And Wholesale Industrial austenitic stainless steel pipe Suppliers. As one of the outstanding clean precision tube manufacturing enterprises in China, it has a team of craftsmen with unremitting efforts, pursuit of excellence and rich experience.

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How are Industrial Austenitic Stainless Steel Pipes manufactured？

Industrial Austenitic Stainless Steel Pipes are commonly used in various applications due to their excellent corrosion resistance and high strength. The manufacturing process for these pipes involves several key steps, which I will outline below:
Raw Material Selection: The process begins with the selection of high-quality raw materials, typically stainless steel alloys with high levels of chromium and nickel. The most common grades used for austenitic stainless steel pipes are 304 and 316.
Melting and Casting: The selected raw materials are melted in electric arc furnaces or induction furnaces. The molten metal is then cast into billets or ingots of specific sizes and shapes.
Hot Rolling: The cast billets are heated and then passed through a series of rolling mills to reduce their cross-sectional area and shape them into long, continuous strips known as hot-rolled coils. This hot rolling process helps improve the mechanical properties and eliminate any defects in the material.
Annealing: The hot-rolled coils may undergo an annealing process, which involves heating the coils to a specific temperature and holding them at that temperature for a set period to relieve internal stresses and improve ductility.
Cold Rolling: The annealed coils are cold rolled to achieve the desired dimensions and surface finish. This process involves passing the coils through multiple sets of rollers at room temperature to further reduce their thickness.
Welding: In many cases, the cold-rolled coils are welded together to form longer lengths. Welding can be done using various methods, such as TIG (Tungsten Inert Gas) welding or high-frequency induction welding, depending on the specific application and pipe size.
Heat Treatment: After welding, the pipes may undergo heat treatment processes like solution annealing or stress-relief annealing to restore the material's microstructure and eliminate any weld-related defects.
Cold Drawing (optional): For some applications requiring precise dimensions and a smoother surface, the pipes may undergo a cold drawing process. This process involves pulling the pipe through a series of dies to achieve the desired final dimensions.
Finishing and Inspection: The pipes are then subjected to various finishing processes, including polishing and pickling, to improve their surface finish and remove any impurities. After finishing, the pipes undergo rigorous inspections to ensure they meet the required specifications and quality standards.
Marking and Packaging: Finally, the pipes are marked with essential information, such as grade, size, and heat number, for identification purposes. They are then carefully packaged for shipment and distribution.

What are the welding and joining considerations when using these Industrial Austenitic Stainless Steel Pipes？

Pre-weld and post-weld cleaning: Prior to welding, it is essential to clean the stainless steel pipes thoroughly to remove any contaminants, grease, oil, or dirt. After welding, the weld area should be cleaned again to prevent contamination and ensure the best corrosion resistance.
Filler material selection: Choose appropriate filler materials that match or closely match the base metal composition to ensure a compatible joint. Common filler metals for austenitic stainless steels include ER308, ER316, or similar grades.
Welding technique: Use proper welding techniques, such as TIG (Tungsten Inert Gas) welding or MIG (Metal Inert Gas) welding, to minimize the risk of defects and ensure good weld quality. Austenitic stainless steels are prone to hot cracking, so proper welding parameters and techniques are crucial.
Heat input: Control the heat input during welding to avoid overheating the material, which can lead to distortion, loss of corrosion resistance, or metallurgical changes in the base metal.
Joint design: The joint design should be carefully considered to ensure the weld's mechanical strength and to minimize stress concentration areas. Proper bevels and edge preparation are important.

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