ASTM A270 TP304 Sanitary Stainless Steel Seamless Tube
ASTM A270 TP304 is a standard for seamless sanitary stainless steel tubing made from 304 grade stainless steel, specifically designed for sanitary applications in industries such as food, beverage, and pharmaceuticals. GNEE's ASTM A270 TP304 stainless steel sanitary tubing is primarily manufactured using hot rolling or cold drawing processes to ensure a smooth inner surface, remove oxide layers, and form a passivation film. Electropolishing (EP) further enhances surface smoothness (Ra ≤ 0.5μm), reduces microbial adhesion, and meets sanitary requirements.
In terms of sanitary performance, ASTM A270 sanitary stainless steel seamless tubing requires a smooth inner wall with no dead corners during manufacturing. It meets 3-A sanitary standards, FDA and EHEDG certifications, is easy to clean, and can withstand high-temperature steam sterilization (suitable for CIP/SIP systems).
Applications
Food and Beverage: ASTM A270 stainless steel seamless pipe is widely used in dairy piping, brewing equipment, and juice distribution piping.
Pharmaceutical: ASTM A270 seamless pipe is widely used in purified water systems, water for injection (WFI) piping, and bioreactors.
Bioengineering: ASTM A270 sanitary seamless pipe is widely used in fermentation tanks and clean fluid system piping.
Specification
ASTM A270 Tp304 StainlessSteel Sanitary Tube Specifcation
Standards :3A/ASTM A270/A270M
Seamless tube OD : 1/2"
Welded tube walt 16 Gauge (0.065")
Length : 20
Type: Seamless,Welded austenitic,Ferritic,Austenitic
Finish :2B Mlll finish,No.4 fnishBA finish,400, 550, 600 Grit finish
ASTM A270 Stainless Steel Tube Chemical Composition
| SS GRADE | ASTM A270/ASME SA 270 CHEMICAL COMPOSITION % MAXIMUM | |||||||
|---|---|---|---|---|---|---|---|---|
| C | MN | P | S | SI | CR | NI | MO | |
| TP304 | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 18.0-20.0 | 8.0-11.0 | 2.00-3.00 |
| TP304L | 0.035 | 2.00 | 0.045 | 0.030 | 1.00 | 18.0-20.0 | 8.0-12.0 | 2.00-3.00 |
ASTM A270 Sanitary Stainless Steel Seamless Tube Mechanical Properties
| SS GRADE |
Tensile Strength, min, ksi [MPa] |
Yield Strength,min, ksi [MPa] |
Elongation in 2 in. or 50 mm, min, %B,C |
|---|---|---|---|
| TP304 | 75 [515] | 30 [205] | 35 |
| TP304L | 70 [485] | 25 [170] | 35 |
Why choose GNEE
GNEE specializes in manufacturing precision stainless steel seamless pipes, BA pipes, EP mother pipes, clean pipes and special alloy pipes.
There are 24 cold rolling mills, 6 cold rolling mills (one imported), 2 fully automatic ultrasonic cleaning machines, 4 bright annealing furnaces, 4 automatic pipe cutting machines (2 imported) and other main equipment, and it is equipped with hydraulic universal testing machines, electronic thickness gauges, metallographic microscopes and other testing equipment.
Testing and Inspection
Each tube shall be subjected to the nondestructive electric test or hydrostatic test, Manufacturer Material Test Certification as per EN 10204 3.1 should be provided.
Tensile property, Elongation
Hardness testing, Brinell, Rockwell, Vickers hardness
Flattening testing
Flaring testing
Hydrostatic or Nondestructive test
Intergranular Corrosion Test – ASTM A262/E (option)
Highest quality packaging and shipping
- Bundles (hexagonal)
- Wooden Boxes
- Crates (steel/wooden)
- Special crates for U-Bend tubes with each radius separated
Customer Visit
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