ASME SA213 TP304 Bright Annealed Seamless Tube Manufacturer

GNEE is an ISO-certified exporter of ASTM A213 tubing and a trusted distributor and stockist of ASTM A213 TP304 seamless tubes. All our ASTM A213 TP304 heat-exchanger tubes are strictly tested in accordance with major international standards and specifications, including DIN, JIS, EN, and ASTM.

Our ASME SA213 TP304 bright-annealed seamless tubes are premium-quality stainless steel tubes manufactured from grade 304 and produced with a completely seamless structure. Through a controlled bright annealing process, the tubes achieve a clean, smooth, and highly reflective surface finish, delivering excellent corrosion resistance, reliable mechanical strength, and a polished appearance. This makes them ideal for applications with stringent hygiene or heat-transfer requirements, such as heat exchangers, food processing equipment, and sanitary systems.

GNEE offers TP304 stainless steel tubes in a wide range of lengths, with full customization available to meet your project needs. The available outside diameter ranges from 3 mm to 219.10 mm, wall thickness from 0.40 mm to 12.70 mm, and lengths up to 30 meters.

ASME SA213 TP304 Bright Annealed Seamless Tube

Specifications

Tube Range : 1/2" OD - 12" OD, Guage: 25 SWG - 10 SWG

Outer Diameter : 3.00 mm - 219.10 mm

Wall Thickness : 0.40 mm - 12.70 mm

Schedules : 5, 10S, 10, 30, 40S, 40, 80, 80S, XS, 160, XXH

Length : Upto 30 meters, Custom Cut Lengths

Specifications : ASTM A213 / ASTM SA213

Types : Round, Square, Rectangle, Coil, "U" Shape, Hydraulic & Honed Tubes, Straight, Coiled, Seamless, Seam welded and cold redrawn, Seam welded, cold redrawn and annealed

Chemical Composition:

Element	TP304, %
C	≤0.08
Mn	≤2.00
P	≤0.045
S	≤0.030
Si	≤1.00
Cr	18.0-20.0
Ni	8.0-11.0

Tensile & Hardness Requirements:

Mechanical Requirements	TP304
Tensile Strength, min. MPa [ksi]	515 [75]
Yield Strength, min. MPa [ksi]	205 [30]
Elongation in 2", min. %	35
Brinell Hardness max. HBW	192
Vickers Hardness max. HV	200
Rockwell Hardness max. HRB	90

Equivalent Material:

Grade	Old British		Unified Numbering System	Swedish SS	Euronorm		Japanese Industrial Standards
	British Standards	European Standards			No	Name
ASME SA213 TP304	304S31	58E	S30400	2332	1.4301	X5CrNi18-10	SUS 304

Tolerance of ASME SA213 TP304 Seamless Tube:

Nominal Pipe Size	Outer Diameter Tolerance
	+		–
	Inch	mm	Inch	mm
1/8~1 1 /2 > 1 1 /2~4 > 4~8 > 8~18 > 18~26 > 26~34 > 34~48	1/64(0.015) 1/32(0.031) 1/16(0.062) 3/32(0.093) 1/8(0.125) 5/32(0.156) 3/16(0.187)	0.4 0.8 1.6 2.4 3.2 4.0 4.8	1/32(0.031) 1/32(0.031) 1/32(0.031) 1/32(0.031) 1/32(0.031) 1/32(0.031) 1/32(0.031)	0.8 0.8 0.8 0.8 0.8 0.8 0.8

If you have any project requirements for ASTM A213 TP304 stainless steel pipes, please click the button below to contact us immediately. We are happy to serve you.

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Value-add services

GNEE, with 18 years of experience in pipe manufacturing, is a trusted supplier of stainless steel pipes. The factory not only produces annealed steel pipes in standard sizes but also offers extended lengths of 18 meters and 25 meters to meet diverse customer needs. The factory is fully equipped, including cold rolling mills, smokeless furnaces, immersion tanks, ultrasonic eddy current cleaning machines, and physical and chemical laboratories.

304 Polished Stainless Steel Welded Tube

Highest quality packaging and shipping

The package is packed with waterproof paper and steel strapping, which meets the standard export sea freight packaging requirements and is suitable for various modes of transportation or can be customized according to customer requirements.