Key Features of Stainless Steel Seamless Pipes

1. Manufacturing Process:
• Extrusion: Stainless steel is heated and pushed through a die to form a pipe, creating a continuous and uniform pipe with no seams.
• Piercing: A billet of stainless steel is pierced to create a hollow tube, which is then stretched and rolled to the desired dimensions.
2. Material Grades:
• 304 Stainless Steel: Known for excellent corrosion resistance and good mechanical properties, making it a common choice for general applications.
• 316 Stainless Steel: Contains molybdenum for enhanced corrosion resistance, especially in marine and chemical environments.
• 321 Stainless Steel: Stabilized with titanium to resist intergranular corrosion, suitable for high-temperature applications.
3. Sizes and Dimensions:
• Outer Diameter (OD): Typically ranges from 1/8 inch to 24 inches or more.
• Wall Thickness: Varies widely, from very thin-walled tubes to heavy-walled pipes, depending on the application requirements.
• Length: Standard lengths are available, but custom lengths can also be produced to meet specific needs.
4. Surface Finishes:
• Annealed Finish: Soft and easy to work with, commonly used in applications requiring further processing or machining.
• Polished Finish: Available in various levels of polish, such as satin or mirror finish, for aesthetic or hygienic purposes.
• Pickled and Passivated: Treated to remove impurities and enhance corrosion resistance.
5. Mechanical Properties:
• High tensile strength and durability, capable of withstanding high pressure and temperature.
• Excellent resistance to creep and stress rupture.
6. Corrosion Resistance:
• Seamless pipes offer superior resistance to corrosion and oxidation, ensuring long-term performance in harsh environments.
7. Uniformity:
• The absence of a welded seam provides uniform strength and structure, reducing the risk of failure under high pressure or stress.