Product Overview – ASTM A269 TP304L Welded Tubes
ASTM A269 TP304L welded stainless steel tubes are manufactured from low-carbon stainless steel to reduce the risk of carbide precipitation during welding. The reduced carbon content enhances corrosion resistance in welded structures and improves long-term reliability in industrial piping systems.
These tubes are produced using high-precision rolling and automatic welding processes, followed by heat treatment and pickling to achieve a uniform metallurgical structure and clean surface finish.
Compared with standard 304 stainless steel tubes, TP304L offers better resistance to intergranular corrosion, making it suitable for fabrication-heavy industries where welding is frequently required.
ASTM A269 TP304L welded tubes are commonly used in instrumentation lines, pharmaceutical equipment, food processing plants, water treatment facilities, and chemical processing systems.
Standard & International Identification - ASTM A269 TP304L Welded Tubes
Technical Specifications – TP304L Welded Tubes
| Tube Type: | Welded Stainless Steel Tubes |
| Manufacturing Process: | Cold Rolled Strip → Automatic Welding → Heat Treatment → Pickling & Passivation |
| Outer Diameter: | 6 mm to 114 mm |
| Wall Thickness: | 0.5 mm to 6 mm |
| Length Options: | Random / Cut Length / Custom Fabricated Tubes |
| Surface Finish: | Bright Annealed / Pickled & Annealed / Polished Finish Available |
| Testing & Inspection: | Hydrostatic Test, Eddy Current Test,Flattening Test, PMI, Flaring Test |
| Certification : | EN 10204 3.1 / 3.2 MTC |
Third Party Inspection Available
All specifications are in accordance of ASTM A269 / ASME SA269 standards. Mechanical and chemical values are as per standard limits. Mill Test Certificates (MTC) available upon request.
Chemical Composition – Stainless Steel TP304L Welded Tubes
(As per ASTM specification)
| Element | Max (%) |
|---|---|
| Carbon (C): | 0.03% |
| Manganese (Mn): | 2.00 % |
| Silicon (Si): | 1.00% |
| Phosphorus (P): | 0.045 % |
| Sulfur (S): | 0.030 % |
| Chromium (Cr): | 18.0-20.0% |
| Nickel (Ni): | 8.0-12.0% |
| Iron : | Balance |
Note: The low carbon level improves resistance to sensitization and intergranular corrosion.
Mechanical Properties – ASTM A269 TP304L Tubes
| Property | Minimum Value |
|---|---|
| Tensile Strength | 485 MPa |
| Yield Strength | 170 MPa |
| Elongation | 35% |
These mechanical properties ensure reliable performance in instrumentation tubing and process piping systems.
Corrosion Resistance of SS 304L Welded Tubes
SS 304L welded tubes provide excellent corrosion resistance in a wide range of industrial environments.
Key corrosion advantages include:
These properties make TP304L ideal for welded pipelines and sanitary tubing systems.
Major Industrial Applications of TP304L welded stainless steel tubes
- ASTM A269 TP304L welded stainless steel tubes are widely used in:
- 🔸Instrumentation Tubing Systems
- 🔸Pharmaceutical Manufacturing Plants
- 🔸Food and Beverage Processing
- 🔸Chemical Processing Equipment
- 🔸Water Treatment Plants
- 🔸Oil and Gas Instrumentation Lines
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