ASTM A312 304 Stainless Steel Seamless Pipe Manufacturer
We, Zhejiang Xintongda Special Steel (XTD), are a reliable China-based manufacturer and a global supplier of Stainless steel 304 pipes. Seamless TP304 pipe is an austenitic stainless steel, also known as 18/8 SS pipe due to the presence of roughly 18% chromium and 8% nickel. We manufacture this pipe in compliance with the ASTM A312 standards. TP304 pipe is preferred as it combines remarkable resistance to many corrosive environments with mechanical properties similar to most structural steels. Key features of this pipe include excellent machinability and being a good welding material with or without filler metals. Stainless steel 304 pipe is ideal for food processing, chemical plants, and other industries covered below. We are a prominent 304 stainless steel pipe exporter and a ISO certified supplier with an annual supply capacity of 25,000 tons. We supply stock orders within a week. Contact us today for a 304 stainless steel pipe price quote.
Our Seamless 1.4301 pipe meets the following specifications:
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Standard ASTM A312 -
OD Range 6-1016 mm -
Thickness 1-65 mm -
Length ≤ 18 m

How do we Produce 304 Stainless Steel Pipes in Our China Factory?
We start by heating a high-quality round steel billet in a furnace. Then, we use a piercing machine to create a hollow shell. This is followed by cold drawing or rolling to achieve the precise size. Finally, we perform solution annealing and pickling to ensure a smooth finish on every pipe. Visit our manufacturing page to learn about our detailed production process for 304 SS Seamless Pipe.
Features of Stainless Steel 304 Seamless pipes
AISI 304 stainless steel pipe has 6 important characteristics:
- Corrosion Resistance: This SS 304 pipe resists rust and oxidation because it contains a high amount of chromium, which forms a protective layer of chromium oxide. This protective layer keeps the pipe durable even when it is exposed to water or harsh chemicals.
- Mechanical Strength: Our stainless steel 304 pipe offers high tensile strength and toughness due to the alloy's balanced composition. It enables the pipes to handle heavy pressure without breaking.
- Temperature Performance: Seamless 1.4301 pipe maintains its structural integrity in both freezing-cold and high-heat environments. It performs well as the material does not become brittle at low temperatures or lose shape under heat.
- Smooth Interior Surface: Each stainless steel seamless 304 pipe unit features a smooth internal surface that prevents sediment buildup. This smooth surface exists to ensure a steady flow of liquids and to make cleaning much easier.
- Formability & Weldability: This seamless stainless steel TP304 pipe is easy to bend, cut, and join. This flexibility is because the balanced austenitic structure supports excellent weld integrity without the risk of cracking during the fabrication process.
- Hygienic Properties: The pipe is non-porous and does not harbour bacteria. This makes it very safe for sensitive uses. This hygienic nature exists as the metal does not react with food or medical products.
What is the Equivalent for 304 Stainless Steel?
The equivalent designation of the 304 pipe is UNS S30400. Its other global equivalents include BS 304S31 and Werkstoff Nr. 1.4301. More global equivalents are explained in the table below.
| GRADE | UNS | GB | JIS | ISO | DIN/EN | GOST | |
| ISC | NEW | ||||||
| 304 | S30400 | S30408 | 06Cr19Ni10 | SUS304 | X5CrNi18-10 | 1.4301 | 08X18H10 |
100% Certified Testing & Documentation
- EN 10204 3.1 and EN 10204 3.2 Material Test Certificates (MTC)
- Raw Materials Certificate
- 100% PMI
- Heat Treatment Charts
- Third-Party Inspection Report
- Surface roughness and size measurement
- Manufacturer Test Certificate (Impact Testing, Flattening, Flare, Bend, Hardness, Intergranular, Pitting Corrosion, Grain size, ET, UT, HT)
- Laboratory Test Certificate from the Government-Approved Lab
What Industries Use Stainless Steel 304 Pipe?
Food & Beverage Processing
Pharmaceutical Industry
Chemical Manufacturing
Automotive Structures
Aerospace and Aviation
Construction and Architecture
Oil and Gas Industry
Frequently Asked Questions
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What are stainless steel 304 seamless pipes?Stainless steel 304 seamless pipes, also called 18/8 stainless steel pipes, are pipes made from AISI 304 stainless steel that don't have any welds or seams. They are strong and resistant to corrosion, which makes them suitable for moving fluids in industries like food and oil.
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What is the difference between 304 and 316 stainless steel pipes?The difference between 304 and 316 stainless steel pipes is that 304 pipes have 18-20% chromium and 8-11% nickel for general corrosion resistance. 316 pipes add 2-3% molybdenum for better resistance to chlorides and acids in marine or chemical use.
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Can Xintongda Deliver Stainless Steel Pipe - 304 Internationally?Yes. We, XTD, are a global supplier of 304 Stainless steel pipe and can deliver these pipes internationally.
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What Other Stainless Steel Products Can I Buy At Xintongda?You can buy stainless steel seamless pipes in grades 310, 310S, 310MoLN, 314, 316, 317, and 321 from us.
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What is the composition of the SS 304 seamless pipe?The composition of the SS 304 seamless pipe includes 18-20% chromium, 8-11% nickel, up to 2% manganese, 0.08% max carbon and iron balance.
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What is 304 stainless steel pipe used for?304 stainless steel pipe is used for the food and beverage industry, pharmaceutical, chemical processing, construction & architecture, and oil & gas industry.
