Customize stainless steel pipes with internal and external mirror surfaces in various sizes

Comprehensive analysis of inner and outer mirror stainless steel pipes
1、 Definition and structural characteristics
Internal and external mirror stainless steel pipes refer to pipes that have undergone high-precision polishing processes on their inner and outer surfaces to achieve a mirror gloss effect (Ra ≤ 0.4 μ m), combining decorative and functional properties. Its core materials are mostly austenitic stainless steels such as 316L and 304, which are formed through cold rolling or cold drawing processes. The seamless structure ensures high cleanliness of the fluid medium.
2、 Key process and performance advantages
Surface treatment process
The inner and outer surfaces are polished using multi-stage mechanical polishing or electrolytic polishing to form a dense oxide film, effectively improving corrosion resistance and stain resistance.
The mirror reflectivity can reach over 90%, meeting the strict requirements for hygiene and aesthetics in fields such as food and medicine.
Material characteristics
When choosing 316L stainless steel, containing 2% to 3% molybdenum (Mo) significantly enhances its corrosion resistance to chlorides and organic acids, making it suitable for marine and chemical environments.
Carbon content ≤ 0.03%, reduces the risk of intergranular corrosion after welding, suitable for high temperature and high pressure scenarios.
Mechanical performance
Tensile strength ≥ 485 MPa, yield strength ≥ 170 MPa, elongation ≥ 30%, capable of withstanding complex processing and heavy loads of 12.
Seamless structure without weld defects, high compressive strength, suitable for precision instruments and high-pressure conveying systems.
3、 Typical application areas
Domain application scenario performance matching reference source
Aseptic filling equipment for food and medicine, with no dead corners on the inner wall surface of storage tanks, easy to clean, and in compliance with hygiene standards 14
Chemical and marine engineering pipelines for transporting corrosive media and seawater desalination equipment have excellent resistance to chloride ion corrosion and pitting corrosion
Architectural decoration with high reflectivity and strong weather resistance for indoor and outdoor railings and elevator finishes
Precision manufacturing of semiconductor equipment and optical instrument components with high dimensional accuracy and no impurity contamination on the surface
4、 Technical standards and specifications
Execution standards: GB/T14976 (China), ASTM A312 (USA), JIS G3459 (Japan) 1.
Common parameters: outer diameter of 18~302mm, wall thickness of 0.5~10mm, length usually 6m, supporting customized processing.
5、 Precautions
Maintenance requirements: Regularly use neutral cleaning agents to wipe the surface and avoid scratching and damaging the mirror layer 1 with hard objects.
Selection suggestion: 316L material is preferred for high humidity or strong corrosive environments, while 304 material can be selected for ordinary decorative scenes to reduce costs by 15%.
The combination of precision machining and high-quality materials has demonstrated excellent practicality and aesthetic value in both industrial and civilian fields for the inner and outer mirror stainless steel pipes.