ASTM A270 TP304 Stainless Steel Sanitary Pipe

ASTM A270 covers grades of seamless, welded, and heavily cold worked austenitic and ferritic/austenitic stainless steel sanitary tubing.

ASTM A270 TP304 seamless pipe shall be manufactured by a process that does not involve welding at any stage. ASTM A270 TP304 welded pipe shall be made by an automatic welding process with no addition of filler metal during welding. Heavily cold worked pipe shall be produced by applying cold working to the welded pipe prior to final annealing, resulting in a reduction of thickness of not less than 35% for both the pipe wall and weld. No filler material shall be used in welding.

The following surface finishes may be specified: mill finish, mechanically polished finish, No. 80, No. 120, No. 180, No. 240 finish, electropolished finish, and maximum average roughness values specified finish. Longitudinal polishing is performed on the inside surface only, while circumferential polishing can be performed on the inside surface, outside surface, or both inside and outside surfaces.

ASTM A270/A270M TP304 sanitary tubing is ideal for the dairy, food, and beverage industries where high purity and cleanliness are required. The product complies with ASTM A270, 3A standards, and most user specifications. We carry a large inventory of sanitary tubes with outside diameters ranging from 1/2 in. (12.7 mm) to 8 in. (203.2 mm) and a standard length of 20 ft. Custom lengths and specifications are available upon request.

ASTM A270 Grade SS304 Stainless Steel Sanitary Tube

ASTM A270 TP304 Stainless Steel Polished Tube

To help narrow down your material or sourcing requirements,
could you share:What specific industry or application (food, pharma, brewing, etc.) are you piping for?
What outer diameter (OD) and wall thickness or surface finish (Ra) do you need?

Contact now

ASTM A270 Sanitary Stainless Steel Tube Specification

ASTM A270 TP304 Sanitary Tubing 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

 

A270 Grade TP304 Tubing of Mechanical Properties

Material	Heat	Tensile Strength	Yield Strength	Temperure	Elongation %, Min
	Treatment	Ksi (MPa), Min.	Ksi (MPa), Min.	Min.
				º F(º C)
Asme A270 TP304	Solution	75(515)	30(205)	1900 (1040)	35

 

Equivalent Material of ASTM A270 TP304 Thin Wall Pipe

Grade	Japanese JIS	UNS No	Euronorm		Old British		Swedish SS
			No	Name	BS	En
ASTM A270 TP304	SUS 304	S30400	1.4301	X5CrNi18-10	304S31	58E	2332

 

ASTM A270 TP304 Surface Finish

Grade	Surface Treatment	Ra Roughness
Basic Grade	Pickling (AP)	≤1.6μm
Standard Grade	Mechanical Polishing (MP)	≤0.8μm
High - end Grade	Electropolishing (EP) / Bright Annealing (BA)	≤0.4μm

 

ASTM A270 Stainless Steel Tube Dimensional Tolerance

OD Size	Nominal wall	Outside Dia	Length	Wall
1/2″ (12.7)	0.065″ (1.65)	+/-0.005 (0.13)	+1/8″ (3.18)/-0	+/-10%
3/4″ (19.1)	0.065″ (1.65)	+/-0.005 (0.13)	+1/8″ (3.18)/-0	+/-10%
1″ (25.4)	0.065″ (1.65)	+/-0.005 (0.13)	+1/8″ (3.18)/-0	+/-10%
1-1/2″ (38.1)	0.065″ (1.65)	+/-0.008 (0.20)	+1/8″ (3.18)/-0	+/-10%
2″ (50.8)	0.065″ (1.65)	+/-0.008 (0.20)	+1/8″ (3.18)/-0	+/-10%
2-1/2″ (63.5)	0.065″ (1.65)	+/-0.010 (0.25)	+1/8″ (3.18)/-0	+/-10%
3″ (76.2)	0.065″ (1.65)	+/-0.010 (0.25)	+1/8″ (3.18)/-0	+/-10%
4″ (101.6)	0.083″ (2.11)	+/-0.015 (0.38)	+1/8″ (3.18)/-0	+/-10%
6″ (152.4)	0.109″ (2.77)	+/-0.030 (0.76)	+3/16″ (4.76)/-0	+/-10%
8″ (203.2)	0.109″ (2.77)	+/-0.030 (0.76)	+3/16″ (4.76)/-0	+/-10%

 

ASTM A270 TP304 Stainless Steel Sanitary Pipe Applications

Food & Beverage: Dairy processing, brewing, and beverage/juice transfer lines.
Pharmaceuticals: Purified water systems, Water for Injection (WFI) piping, and clean steam distribution.
Biotechnology: Fermentation tanks and clean fluid transfer.

To further clarify your project requirements, could you please provide the following information?
What are the required outer diameter (OD) and wall thickness?
What surface finish do you require (e.g., 32 Ra for ID/OD, electropolishing, etc.)?
Do you require welded or seamless tubing?

Contact now

 Quality Inspection

If specified in the order, the manufacturer must conduct intergranular corrosion tests on samples representing the material in the shipped condition. Sanitary-grade stainless steel tubing must pass the corrosion test in the shipped condition. Austenitic alloy steels must comply with Practice E of Standard A262, while duplex alloy steels (S31803, S32205, and A32750) must comply with Test Method C of Test Method A 923.
For ASTM A270 stainless steel tubing intended for pharmaceutical applications, requirements regarding chemical composition, strength, and dimensional tolerances are more stringent.

 

All materials must be delivered in the heat-treated condition. Chemical composition analysis must be performed on one flat-rolled blank or one tube from each heat. Each tube must undergo mechanical property testing, such as the reverse flattening test, hydrostatic test, or non-destructive electromagnetic testing.

Flattening test
 

Flaring test

Hydraulic Or Airtightness Testing

Universal Tensile Tester

Spectrum Analysis

Roughness Testing

GNEE PACKAGING AND SHIPPING

ASTM A270 TP304 sanitary pipes are packed with plastic caps, waterproof film and steel straps to prevent contamination, moisture and surface damage. Pipes are supplied in bundles of approximately 1–3 tons, with wooden cases or reinforced pallets available for export. Each bundle is clearly marked with grade, size, quantity and heat number for traceability.

 

 

FAQ

Can ASTM A270 TP304 steel tubing be used in CIP (Clean-in-Place) systems?
Yes. This is one of its primary applications. Its smooth internal surface (Ra ≤ 0.8 µm) allows cleaning fluids to flow smoothly, effectively removing "soil" (product residue) without the need to dismantle the piping system.

 

What is the difference between ASTM A270 and ASTM A269?
ASTM A270: Specifically designed for sanitary applications. This standard specifies requirements for surface finish (Ra) and cleanliness.
ASTM A269: A general-purpose tubing standard for various industrial applications (involving pressure, corrosion, etc.). It does not mandate the high-level surface finish required for food-grade systems.

 

What types of tube ends are available?
Sanitary tubing is typically supplied with the following end types:
Plain Ends: Used for orbital welding (common in high-purity systems).
Tri-Clamp Ends: Usually attached via welding to allow for easy installation and disassembly using clamps and gaskets.

 

Hot Tags: astm a270 tp304 stainless steel sanitary pipe, China astm a270 tp304 stainless steel sanitary pipe manufacturers, suppliers, factory, 304 304L Stainless Steel Food Grade Sanitary Tube, 316 316L Marine Grade Stainless Steel Pipe, stainless steel seamless pipe without brand, ASTM A269 TP304LN SS Polished Pipe, ASTM A312 TP316 Stainless Steel Round Pipe, 304 304L Stainless Commercial Tubing