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ASTM A270 TP304,Stainless Steel Welded Tube,Sanitary Tubing
Overview
Standards: ASTM A270 is the standard specification for seamless and welded austenitic stainless steel sanitary tubing intended for use in the dairy and food industry and having special surface finishes. TP304 refers to the specific grade of stainless steel, which is Type 304, a commonly used stainless steel alloy known for its excellent corrosion resistance.ASTM A270 specifies several surface finishes for sanitary tubing, including the most common ones: 180 grit (Ra 32 max) and 320 grit (Ra 20 max). These finishes ensure a smooth surface that is easy to clean and maintain, reducing the risk of bacterial growth and contamination.
Chemical Composition of ASTM A270 TP304
| Grade | Ni | Cr | Si | Mn | C | P | S | |
| TP304 | Min | 8.0 | 18.0 | |||||
| Max | 11.0 | 20.0 | 1.0 | 2.0 | 0.08 | 0.045 | 0.03 |
Mechanical Properies of ASTM A358 CL1 TP316L
| Grade | Tensile Str Ksi(Mpa) | Yield Str Ksi(Mpa) | Elongation(%) | Rockwell Hardness |
| TP304 | ≥75(515) | ≥30(205) | ≥35 | ≤B90 |
Dimension Toleances
| Size,Outside Diameter,in.(mm) | Permissible Variations in Outside Diameter,in.(mm) | Permissible Variations in Outside Diameter,in.(mm) | ||||||
| Over | Under | Over | Under | |||||
| 1.000(25.4) and under | 0.005(0.13) | 0.005(0.13) | 1/8(3.2) | 0 | ||||
| Over 1(25.4) to 2(50.8) | 0.008(0.20) | 0.008(0.20) | 1/8(3.2) | 0 | ||||
| Over 2(50.8) to 3(76.2) | 0.010(0.25) | 0.010(0.25) | 1/8(3.2) | 0 | ||||
| Over 3(76.2) to 4(101.6) | 0.015(0.38) | 0.015(0.38) | 1/8(3.2) | 0 | ||||
| Over 4(101.6) to 5 1/2(139.7),excl | 0.015(0.38) | 0.015(0.38) | 3/16(4.8) | 0 | ||||
| 5 1/2(139.7) to 8(203.2),excl | 0.030(0.76) | 0.030(0.76) | 3/16(4.8) | 0 | ||||
| 8(203.2) to 12 (304.8) | 0.050(1.27) | 0.050(1.27) | 3/16(4.8) | 0 | ||||
The Application of ASTM A270 TP304
Food and Beverage Industry: ASTM A270 TP304 tubes are extensively used in the food and beverage industry for the transportation of various liquids, including water, dairy products, juices, and alcoholic beverages. Their smooth, easy-to-clean surface finish and high corrosion resistance make them ideal for maintaining cleanliness and preventing contamination.
Dairy Processing: In dairy processing plants, ASTM A270 TP304 tubes are utilized for the transportation of milk, cream, and other dairy products. The hygienic nature of the tubing prevents bacterial growth and ensures product integrity.
Pharmaceutical Industry: The pharmaceutical industry has stringent requirements for cleanliness and sanitation. ASTM A270 TP304 tubes are employed for the transfer of pharmaceutical ingredients, formulations, and sterile solutions. They are also utilized in cleanrooms and pharmaceutical manufacturing equipment.
Biotechnology: Biotechnology applications, such as the production of vaccines, enzymes, and biotherapeutics, rely on ASTM A270 TP304 tubing for their sanitary fluid transfer systems. The high-quality stainless steel construction minimizes the risk of product degradation and ensures sterile conditions.
Cosmetics and Personal Care Products: The cosmetic and personal care industry often employs ASTM A270 TP304 tubes for the manufacturing and transportation of lotions, creams, gels, and other beauty products. The tubing's smooth surface finish and resistance to chemical reactions make it suitable for maintaining product purity.
