304 Stainless Steel Seamless Pipe

304 Stainless Steel Seamless Pipes are seamless tubes made from high-quality austenitic stainless steel. The pipes undergo hot piercing and pickling passivation treatment, resulting in a smooth, scale-free surface and resistance to general corrosive environments, including atmospheric conditions, water, and mild chemical environments. They are widely used in industries such as oil and gas, petrochemical and chemical processing, power generation, and automotive manufacturing.

Outer Diameter: 5mm-620mm (customizable)
Wall Thickness: 0.5mm-55mm (customizable)
Length: Can be customized upon request
Standards: ASTM A312, ASTM A213, ASTM A269, EN 10216-5, JIS G3459, Or as per customer specifications.
Steel Grade: P XM-19 TP XM-10 TP XM-11 TP XM-15 TPXM-29 304 304L 304H 304LN 309S 309H 310S 316 316L 316LN 317 321 347 348 904L,etc.

Products Description

Our Advantages

1. Excellent Pressure Resistance
Our 304 Stainless Steel Seamless Pipes are manufactured using a hot piercing process, ensuring a uniform, weld-free pipe structure and higher pressure resistance compared to welded pipes.

2. Surface Quality
Our pipes undergo pickling treatment to remove scale and enhance corrosion resistance, ensuring better corrosion protection during transportation, storage, and long-term use.

3. Corrosion Resistance
Made from 304 stainless steel, our pipes are suitable for water, steam, and mild chemical environments. Our 304 Stainless Steel Seamless Pipes undergo rigorous chemical composition testing to ensure they meet customer requirements.

4. Economic Performance
Our pipes eliminate complex cold deformation processing and multiple intermediate heat treatments, resulting in high production efficiency and low cost, making them suitable for large projects and infrastructure.

5. Good Machinability and Weldability
Our pipes are supplied in an annealed state, making them easy to cut, bevel, and weld. This reduces the difficulty and cost of on-site installation and manufacturing, and the pickled surface minimizes the need for pre-welding pickling.

6. Customization Services
We can provide customized dimensions, outer diameter, wall thickness, pipe material, and surface treatment according to customer requirements. Cold drawing/cold rolling processing is also available upon request.

application areas

Chemical and petrochemical industries: Used for conveying weak acids, weak bases, solvents, and process fluids.
Oil and gas and energy industries: Used for auxiliary piping, low-to-medium pressure fluid systems, instrument lines, and support piping.
Heat exchangers and boilers: Used for heat exchanger tubes, condenser tubes, and boiler auxiliary systems.
Water treatment: Suitable for water supply pipelines, filtration systems, desalination plants, and wastewater treatment facilities.
Automotive and general manufacturing: Used for exhaust components, fluid transfer lines, and manufactured parts.

Chemical Composition

Element	C (%)	Mn (%)	Si (%)	P (%)	S (%)	Cr (%)	Ni (%)
TP304	≤0.08	≤2.00	≤1.00	≤0.045	≤0.030	18.00–20.00	8.00–10.50

Mechanical Properties

Property	Tensile Strength (MPa)	Yield Strength 0.2% (MPa)	Elongation (%)	Hardness (HB)
Value	≥ 515	≥ 205	≥ 40	≤ 201

Possible Alternative Grades

Alternative Grades	Reasons
304L	Low-carbon version, offering better welding performance and lower risk of intergranular corrosion.
316/316L	Contains added molybdenum, enhancing corrosion resistance and suitable for chloride environments.
310S	High chromium and nickel content, providing high-temperature resistance.