TP304 stainless steel seamless pipe

TP304 stainless steel seamless pipe is one of the most widely used austenitic stainless steel pipes in industrial systems, valued for its durability, corrosion resistance, and stable performance across demanding environments. Below is a clear and structured overview for quick reference.

1. Chemical Composition of TP304 Stainless Steel Seamless Pipe

Carbon ≤0.08%, Silicon ≤1.0%, Manganese ≤2.0%, Phosphorus ≤0.040%, Sulfur ≤0.030%,
Nickel 8.0–11.00%, Chromium 18.00–20.00%

2. Common Specifications

Outer Diameter: 57 mm – 1626 mm

Wall Thickness: 1.2 mm – 60 mm

3. Production Method & Delivery Condition

Production: Seamless manufacturing (hot rolling or cold rolling)

Delivery: Heat treatment + pickling

Material Properties of TP304 Stainless Steel Seamless Pipe

TP304—also known as 18/8 stainless steel—contains about 18% chromium and 8% nickel.
Key characteristics include:

Excellent corrosion resistance against oxidizing, organic, inorganic acids, and alkaline solutions

High oxidation resistance at elevated temperatures

Strong mechanical properties and toughness

Good formability and weldability for diverse processing needs

Manufacturing Process of TP304 Stainless Steel Seamless Pipe

TP304 seamless pipes follow standards such as ASTM A312, using:

Hot Rolling: For large-diameter, thick-wall pipes

Cold Rolling / Cold Drawing: For small-diameter, thin-wall pipes with high precision

Quality inspections include chemical analysis, mechanical testing, hydrostatic testing, and eddy current testing.

Application Areas of TP304 Stainless Steel Seamless Pipe

Thanks to its balanced performance, TP304 stainless steel seamless pipe is used in:

Petroleum & chemical pipelines (corrosive media, high-temperature steam)

Power generation

Food processing (hygienic, easy to clean)

Medical devices and implants (biocompatibility)

Aerospace components

Performance Advantages of TP304 Stainless Steel Seamless Pipe

Corrosion Resistance: Dense chromium oxide film protects the surface.

High-Temperature Strength: Stable mechanical properties under heat.

Excellent Workability: Easy to shape, weld, and fabricate.

Aesthetic Finish: Clean, smooth, silver-white appearance.

Selection & Maintenance Tips of TP304 Stainless Steel Seamless Pipe

Selection

Check the material certificate (ASTM A312 compliance).

Inspect surface quality for cracks, inclusions, or rust.

Verify dimensional accuracy (OD, wall thickness, tolerances).

Conduct hydrostatic or eddy current tests if needed.

Maintenance

Clean regularly to remove deposits.

Avoid exposure to highly corrosive substances.

Inspect welds and joints for leakage or loosening.

Store in a dry, ventilated environment.

TP304 stainless steel seamless pipes offer dependable performance across a broad range of industries. With proper selection and maintenance, they deliver long service life, reduce operational costs, and ensure high reliability in critical engineering applications.