ASTM A270 / ASME SA270 TP316L Sanitary Tube Stainless Steel Welded Tube For Food Industry
ASTM A270 / ASME SA270 TP316L Stainless Steel Welded Sanitary Tube
ASTM A270 / ASME SA270 TP316L is a standard specification covering seamless and longitudinally welded austenitic stainless steel tubing intended for sanitary (hygienic) applications. The tube is manufactured from TP316L low-carbon, molybdenum-bearing steel, and is specifically designed for use in the food, dairy, beverage, and pharmaceutical industries where the tubing interior must be sufficiently smooth to allow complete drainage and prevent bacterial growth, and where high resistance to corrosion from food acids and cleaning agents is required.
Equivalent Grade of ASME SA270 TP316L Sanitary Tube Stainless Steel Welded Tube
| GRADE | UNS | WERKSTOFF NR. | JIS | AFNOR | BS | GOST | EN | SS |
| TP 316L | S31603 | 1.4404 / 1.4435 | SUS 316L | Z3CND17‐11‐02 / Z3CND18‐14‐03 | 316S11 / 316S13 | 03Ch17N14M3 / 03Ch17N14M2 | X2CrNiMo17-12-2 / X2CrNiMo18-14-3 | 2348 |
Chemical Composition % of ASME SA270 TP316L Sanitary Tube Stainless Steel Welded Tube
| GRADES | UNS | C | Mn | P | S | Si | Cr | Ni | Mo | Ti | Nb | N |
| TP316L | S31603 | 0.035 | 2 | 0.045 | 0.03 | 1 | 16.0-18.0 | 10.0-14.0 | 2.0-3.0 |
Mechanical Properties of ASME SA270 TP316L Sanitary Tube Stainless Steel Welded Tube
| Material | Heat | Temperure º F(º C) | Tensile Strength | Yield Strength | Elongation %, Min |
| Treatment | Min. | Ksi (MPa), Min. | Ksi (MPa), Min. | ||
| TP316L | Solution | 1900(1040) | 70(485) | 25(170) | 35 |
ASTM A270 TP316L Stainless Steel Welded Pipe Physical Properties
| Grade | Density (kg/m3) | Elastic Modulus (GPa) | Mean Coefficient of Thermal Expansion (μm/m/°C) | Thermal Conductivity (W/m.K) | Specific Heat 0-100°C (J/kg.K) | Electrical Resistivity (nΩ.m) | |||
| 0-100°C | 0-315°C | 0-538°C | at 100°C | at 500°C | |||||
| ASTM A270 TP316L | 8000 | 193 | 17.2 | 17.8 | 18.4 | 16.2 | 21.5 | 500 | 720 |
What the Difference Between Sanitary Seamless and Welded Pipe?
Sanitary seamless pipes are produced by piercing a solid billet of stainless steel and then drawing it over a mandrel to create the desired shape and size. This process results in a pipe with a smooth, continuous surface that is free from any welds or seams.
Sanitary welded pipes are made by rolling a flat strip of stainless steel into a tube shape and welding the edges together using a Tungsten Inert Gas (TIG) welding process. This process can result in a pipe with a slightly uneven surface due to the presence of the weld seam.
Both types of pipes can be used in sanitary applications as long as they meet the required standards for cleanliness, corrosion resistance, and surface finish. However, seamless pipes are generally preferred in applications where a completely smooth surface is required to prevent the buildup of bacteria and other contaminants.
Application
Due to its exceptional hygiene, cleanability, and corrosion resistance, this tube is widely used for:
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Dairy Processing: Milk, cheese, yogurt (resists lactic acid).
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Beverage Production: Beer, wine, fruit juices, carbonated soft drinks.
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Edible Oils & Fats: High-temperature processing lines.
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Sugar Refining and Confectionery.
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Cosmetics (where GMP standards apply).
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High-purity Water (PW/WFI) loops for CIP systems.
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