To replace sanitary tubings with internally and externally polished industrial pipes, the pipes must meet a series of stringent requirements. These requirements are typically related to the cleanliness, smoothness, chemical composition, and pressure resistance of the pipes. The specific standards for replacement can vary depending on the industry, application, and region. Below is a general overview of the key criteria:

1. Surface Cleanliness and Roughness

• Surface Cleanliness: For industrial pipes to be considered as a substitute for sanitary tubings, they must achieve a surface cleanliness level comparable to that of sanitary tubings. Typically, sanitary tubings require an internal surface roughness of Ra0.2μm to Ra0.4μm or less. Therefore, industrial pipes must be polished to meet or exceed this standard.
• Surface Roughness: The roughness of industrial pipes should ideally be around 0.2μm after polishing. This level of smoothness is critical in preventing the buildup of contaminants, ensuring that the pipes are suitable for applications requiring high hygiene standards.

2. Chemical Composition

• Material Composition: The chemical composition of industrial pipes often does not match the strict standards required for sanitary tubings. Sanitary-grade stainless steel tubes have stringent requirements for the content of elements such as chromium, nickel, sulfur, and carbon. Common materials include 316, 316L, or 304 stainless steel. If industrial pipes are to replace sanitary tubings, they must meet these exacting chemical composition standards.

3. Pressure Resistance

• Pressure Considerations: While pressure resistance is not the primary factor in determining the suitability of a replacement, it may still be important in some applications. Although sanitary tubings generally have lower pressure resistance, there are specific applications where the tubing needs to withstand certain pressures. If industrial pipes are to replace sanitary tubings, their pressure resistance must at least meet the requirements of the intended application.

4. Sanitary Standards and Certifications

• Regulatory Compliance: The most critical factor is whether the industrial pipes can meet the sanitary standards and certifications required for sanitary tubings. These standards and certifications typically cover material safety, manufacturing processes, cleanliness, and microbiological limits. For industrial pipes to replace sanitary tubings, they must pass these stringent standards and certifications to ensure safety and reliability in use.

5. Practical Considerations in Application

• Installation and Maintenance: In practical applications, other factors such as installation, maintenance, cleaning, and compatibility with other equipment must be considered. These factors can significantly impact the feasibility and effectiveness of using polished industrial pipes as a replacement for sanitary tubings.

Conclusion

In summary, for polished industrial pipes to meet the standards for replacing sanitary tubings, they must achieve or exceed the sanitary tubing requirements in surface cleanliness, roughness, chemical composition, pressure resistance, and sanitary standards and certifications. However, since the specific standards for replacement may vary due to various factors, a careful evaluation of the actual application is necessary to determine the suitability of industrial pipes as a replacement. It is important to note that the above standards are general descriptions and do not constitute specific replacement criteria. In actual practice, reference should be made to relevant industry standards and specifications, as well as the specific needs of the application, to determine the exact standards for replacement. Keywords: sanitary tubings, polished industrial pipes, surface cleanliness, chemical composition, sanitary standards, stainless steel tubes.