Product Overview – ASTM A312 TP304 Welded Pipes
ASTM A312 TP304 is the most widely used austenitic stainless steel grade. TP304 welded pipes are manufactured by rolling stainless steel strip into cylindrical form and welding longitudinally using TIG or laser welding processes.
These pipes offer excellent corrosion resistance, good weldability, and cost efficiency compared to seamless pipes for low to medium pressure applications.
SS 304 welded pipes are commonly used in structural, architectural, water pipeline, dairy, and chemical processing industries.
Standard & International Identification - ASTM A312 TP304 Welded Pipe
ASTM A312 TP304 Welded Pipe Specifications
| Manufacturing Type : | Welded / ERW |
| Available Sizes: | 1/8″ NB to 36″ NB |
| Schedules: | 5S, 10S, 40S, 80S |
| Length: | 6m, 12m, Custom Length |
| Finish: | Annealed & Pickled / Polished |
| End Type: | Plain End (PE), Beveled End (BE), Threaded |
| Testing : | Hydrostatic, Weld Seam Testing, PMI |
| Certification : | EN 10204 3.1 / 3.2 MTC |
| Dimensional compliance: | ASME B36.19M. |
All specifications are in accordance of ASTM A312 / ASME SA312 standards. Mechanical and chemical values are as per standard limits. Mill Test Certificates (MTC) available upon request.
Chemical Composition of ASTM A312 TP304 Welded Pipe
(As per ASTM specification)
| Element | Max (%) |
|---|---|
| Carbon (C) | 0.08% |
| Manganese (Mn) | 2.00 % |
| Silicon (Si) | 1.00 % |
| Phosphorus (P) | 0.045 % |
| Sulfur (S) | 0.030 % |
| Chromium (Cr) | 18.0 – 20.0% |
| Nickel (Ni) | 8.0 – 11.0% |
| Iron (Fe) | Balance |
Note: The chromium-nickel composition provides excellent general corrosion resistance.
Mechanical Properties of TP304 Welded Pipes
| Property | Minimum Value |
|---|---|
| Tensile Strength | ≥ 515 MPa |
| Yield Strength | ≥ 205 MPa |
| Elongation | ≥ 35% |
SS 304 provides good strength with high ductility.
Corrosion Resistance & Performance ASTM A312 TP304 Welded Pipes
SS 304 welded pipes offer:
For normal industrial and structural applications, TP304 is the industry standard.
Applications of ASTM A312 TP304 Welded Pipes
- 🔸Water supply pipelines
- 🔸Food & beverage processing
- 🔸Dairy industry piping
- 🔸Chemical transfer lines
- 🔸Architectural structures
- 🔸Pharmaceutical plants
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