Stainless Steel Seamless Sanitary Tube ASTM A270 TP316L 320 Grit Polished Outside

Stainless Steel Seamless Sanitary Tube ASTM A270 TP316L 320 Grit Polished Outside

ASTM A270 TP316L polished tube is a specialty sanitary tubing primarily used in industries that demand the highest levels of cleanliness and corrosion resistance .

In short, it is the standard choice for fluid and product transfer in sanitary applications.

Primary Applications

The standard ASTM A270 and the material TP316L are specifically tailored for the following sectors :

• Food and Beverage: Transporting products like milk, beer, juice, and edible oils in processing plants ..
• Dairy Industry: A core application for milking lines and product transfer pipes .
• Cosmetics and Personal Care: Manufacturing lotions, creams, and other hygiene-sensitive products .
• High-Purity Industries: Also utilized in semiconductor manufacturing and high-purity gas systems, particularly in its electropolished (EP)form .

Key Properties & Material Advantages

The suitability for these applications comes from specific material and design features:

• Superior Corrosion Resistance:TP316L is a low-carbon version of 316 stainless steel. The addition of Mo provides excellent resistance against corrosion, especially from chlorides and the acidic compounds found in food.
• Hygienic Surface Finish (The "Polished" Aspect): The tubing is mechanically or electro-polished to achieve a very smooth surface (low Ra value, often 0.5µm or 20µ-in) .
  • This smooth finish prevents bacterial adhesion and growth.
  • It eliminates crevices where particles could become trapped.
  • It allows for effective CIP (Clean-in-Place)and SIP (Sterilize-in-Place) processes .
• Material Purity: To ensure weld integrity and corrosion resistance for critical applications, 316L material for these tubes often has controlled sulfur content.

ASTM A270 Standard Specification for Seamless and Welded Austenitic Stainless Steel Sanitary Tubing

1.1 This specification covers grades of seamless and welded austenitic stainless steel sanitary tubing intended for use in the dairy and food industry and having special surface finishes.
1.2 This specification covers tubes in sizes up to and including 4 in. (101.6 mm) in outside diameter.
1.3 The values stated in inch-pound units are to be regarded as the standard.
1.4 Optional supplementary requirements are provided, and when one or more of these are desired, each shall be so stated in the order.

Product Information