In dairy fluid processing, sanitary stainless steel tubing serves not only as a physical carrier for material transport but also as a critical barrier ensuring total sterility from raw milk to the finished product. These products strictly adhere to international sanitary standards such as ASTM A270, DIN 11850, or ISO 2037, and are predominantly manufactured from high-quality 304 or 316L low-carbon stainless steel, providing exceptional resistance to lactic acid corrosion. The inner walls undergo precision mechanical or electropolishing to achieve a surface roughness (Ra) of 0.5μm to 0.8μm. This mirror-like finish effectively prevents protein buildup and scaling, fundamentally eliminating environments where microorganisms can proliferate, which is essential for high-standard hygiene control in the dairy industry.
Leveraging superior physical properties, these sanitary piping systems offer powerful functional advantages, perfectly accommodating the frequent CIP (Cleaning-in-Place) and SIP (Sterilization-in-Place) cycles required in dairy processing. They withstand the repeated impact of strong acid/alkali cleaning agents and high-temperature steam without releasing harmful substances. Furthermore, the "dead-leg-free" connection design ensures absolute purity throughout the production process. By minimizing cross-contamination risks and extending equipment service life, sanitary stainless steel tubes help dairy enterprises meet stringent GMP and HACCP compliance requirements, acting as a technical cornerstone for maintaining flavor stability and shelf-life.
The dairy industry’s requirements for tubing far exceed conventional industrial standards, centered on eliminating biological contamination through extreme physical specifications. Since dairy products are highly sensitive to microbial spoilage and production lines undergo daily CIP and SIP cycles, the pipes must maintain high chemical inertness and physical stability under extreme conditions.
·Standards & Materials：
Industry mandates compliance with ASTM A270, DIN 11850, or ISO 2037. Materials must be 304 or 316L grade low-carbon stainless steel. This is required not only to resist micro-corrosion from lactic acid but also to ensure no intergranular corrosion or metal ion migration occurs under the alternating impact of high-concentration chemicals (e.g., nitric acid, sodium hydroxide) and high-temperature steam exceeding 130°C.
·Surface Treatment：
Dairy processes require the internal surface roughness (Ra) to be stabilized between 0.5μm and 0.8μm. Precision mechanical or electropolishing creates a mirror-smooth finish. This treatment eliminates microscopic pits and crevices, preventing fat and protein residues from forming biofilms and ensuring the CIP system can effectively remove all contaminants.
·Manufacturing Methods：
Welded**Stainless Steel ** Sanitary Tubes : Utilizes automatic TIG welding with inner weld bead leveling and online bright annealing. This ensures the metallurgical structure of the weld matches the base material, providing a seamless transition that eliminates physical gaps.
·Seamless Stainless Steel Sanitary Tubes : For ultra-high pressure or extreme aseptic processes, multi-pass cold drawing/rolling combined with internal bore grinding is used to eliminate any risks associated with weld seams, offering higher structural integrity.
·Testing Mechanisms：
Qualified tubes must pass rigorous testing: Non-Destructive Testing (NDT) via online eddy current or ultrasonic testing to exclude cracks or pores; Physical Testing including pressure bearing, flaring, and bending tests; and Compliance Certification providing full Material Test Reports (MTR) and third-party food-grade certifications.
Yaolong Hygienic As a professional service provider deeply rooted in the sanitary fluid industry, we provide more than just hardware; we deliver lifecycle fluid piping solutions. We offer the following core support for dairy enterprises pursuing sterility, automation, and compliance:
·Full-Standard High-Quality Supply: We maintain a robust inventory of 304 and 316L sanitary tubes compliant with ASTM A270/DIN 11850. Every tube undergoes strict internal Ra testing and eddy current flaw detection to ensure mirror-level cleanliness and reliable corrosion resistance.
·Expert Process Customization & Selection: Our technical team provides professional consulting based on your specific conditions—whether it’s Pasteurization, UHT sterilization, or fermentation tank farms. We help you balance performance and cost, whether recommending 316L for high-corrosion zones or bead-leveled welded tubes for critical aseptic stages.
·Comprehensive Compliance & Technical Documentation: To assist you in passing GMP, HACCP, or FDA audits, we provide exhaustive quality documentation, including MTRs, surface roughness reports, and traceable production records. We treat quality traceability as the lifeline of dairy compliance.
·Efficient Delivery & After-Sales Response: To meet the urgent timelines of dairy plant maintenance and expansion, we provide a rapid-response mechanism. Beyond standard tube stock, we offer one-stop supply for system components (elbows, tees, clamps), significantly shortening procurement cycles and reducing downtime risks.
