ASTM A312 TP304 Stainless Steel Seamless Pipe

GNEE supplies ASME SA312 TP304 (UNS S30400) stainless steel seamless pipes, suitable for high-temperature and corrosive environments.

ASTM A312 TP304 stainless steel seamless pipes are manufactured through a piercing and rolling process to form a continuous pipe wall, eliminating common defects found in welded pipes such as porosity and slag inclusions, improving reliability by more than 30%. The wall thickness tolerance is controlled within ±10%, ensuring uniform pressure-bearing capacity and reducing the risk of localized stress concentration.

TP304 stainless steel round pipes can operate stably at temperatures up to 538°C, with short-term peak temperatures reaching 700°C, meeting the requirements of high-temperature environments such as refining and chemical industries. With pressure resistance exceeding 10 MPa, they are suitable for high-pressure fluid transportation (e.g., oil pipelines).

ASTM A312 TP304 seamless pipe

TP304 stainless steel pickled pipe

ASTM A312 TP304 stainless steel pipes are supplied in annealed and pickled condition. The outer diameter ranges from 6 mm to 914.4 mm (1/8″ to 36″), and wall thickness ranges from 0.3 mm to 50 mm, covering SCH 5S to XXS schedules to meet various pressure and flow requirements. Lengths can be customized as single random length, double random length, or fixed length, and end types are available in plain end, beveled end, or threaded end.

All pipes undergo strict hydrostatic testing and ultrasonic inspection, and are provided with EN 10204 3.1 MTC quality certificates.

Standard Specification	ASTM A312 TP304 ASME SA312 TP304
Size	½ to 6 inch Nominal Bore
Wall Thickness	0.1 - 60 mm
Schedule Pipe Thickness Range	Schedule 60, XS, Schedule 160, Schedule 120, STD, Schedule 40, Schedule 140, Schedule 20, Schedule 80, Schedule 80, XXS, Schedule 30, Supplier in Mumbai
Length	Single Random Length 5 to 7 Meter Double Random Length 10 - 12 Meter
Types	Welded, Seamless, ERW, EFW Supplier and Manufacturer
Surface Finish	Polished, Bright, Annealing, Cold Finish, Pickling

 

Mechanical Properties Of ASTM A312 TP 304 Stainless Steel Seamless Pipe

Density	8.0 g/cm3
Melting Point	1400 °C (2550 °F)
Tensile Strength	Psi – 75000 , MPa – 515
Yield Strength (0.2%Offset)	Psi – 30000 , MPa – 205
Elongation	35 %

 

What is the difference between TP304 and TP304L?

The main difference between TP304 and TP304L lies in their carbon content. TP304L (low carbon, 0.03% carbon content) offers superior resistance to intergranular corrosion after welding compared to standard TP304 (0.08% carbon content). TP304 is commonly used for general-purpose corrosion-resistant applications, while TP304L is better suited for thicker welded components.

 

What pressure can A312 TP304 seamless stainless steel pipe withstand?

ASTM A312 TP304 seamless stainless steel pipe can typically withstand working pressures of approximately 1,000 to 3,000 psi or more at ambient temperature. The specific pressure depends on the pipe size (outer diameter) and wall thickness (wall thickness rating). For example, a 1/2-inch Schedule 40 pipe can withstand pressures exceeding 3,000 psi, while a 4-inch Schedule 40 pipe can withstand approximately 1,070 psi.

 

ASTM A312 TP304 Stainless Steel Round Pipe Application

Petroleum and Chemical Industry: Commonly used in pressure pipelines for transporting corrosive fluids, high-temperature and high-pressure chemical reaction units, and refinery pipelines.

Food, Beverage, and Pharmaceutical Equipment: Used in food processing, brewing, dairy production, and aseptic piping systems for pharmaceuticals.

Fluid and Gas Transportation: Used for the transport of liquids and gases in general high-temperature or corrosive environments, including water treatment and seawater desalination facilities.

 

ASTM A312 TP304 pipe manufacturers

According to the standard, each pipe must undergo:
Hydrostatic Test: To ensure no leakage under high pressure.
Non-destructive Electrical Test: Typically eddy current testing (ET) or ultrasonic testing (UT).
Mechanical Performance Testing: Including tensile and flattening tests.
Intergranular Corrosion Testing (as required): Such as ASTM A262 Practice E.

ASTM A312 TP304 pipe manufacturers

Intergranular Corrosion Testing

 

High-quality sea freight packaging

 Packaging: Each tube is wrapped in moisture-proof paper, lined with plastic film, and secured with steel straps. The outer layer is protected by wooden pallets or crates to ensure safety during international transport.

Identification: Each package includes the furnace number, grade, dimensions, and standard information.

Delivery Time: Typically within 7-15 business days after receiving prepayment.

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