Product Overview – ASTM A269 TP304H Welded Tubes
ASTM A269 TP304H welded stainless steel tubes are designed for industrial applications that require higher strength at elevated temperatures compared with standard 304 stainless steel.
The “H” grade contains increased carbon content, which improves creep strength and high-temperature mechanical performance. This makes TP304H suitable for equipment operating in continuous heat environments.
These welded tubes are manufactured from high-quality stainless steel strips that are precision rolled, automatically welded, and heat treated to ensure uniform metallurgical structure and corrosion resistance.
Because of their ability to maintain structural integrity under thermal stress, ASTM A269 TP304H tubes are commonly used in refinery processing equipment, chemical plants, high-temperature piping systems, and industrial heat exchangers.
Standard & International Identification - ASTM A269 TP304H Welded Tubes
Technical Specifications – TP304H 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 TP304H Welded Tubes
(As per ASTM specification)
| Element | Max (%) |
|---|---|
| Carbon (C): | 0.04 – 0.10% |
| 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 : | Balance |
Note: The higher carbon content improves creep resistance and high-temperature strength.
Mechanical Properties – ASTM A269 TP304H Tubes
| Property | Minimum Value |
|---|---|
| Tensile Strength | 515 MPa |
| Yield Strength | 205 MPa |
| Elongation | 35% |
These properties ensure durability and structural reliability in elevated temperature industrial environments.
High Temperature Performance of SS 304H Tubes
SS 304H tubes are specifically developed for industrial environments involving prolonged heat exposure.
Key performance advantages include:
These characteristics make TP304H suitable for heat-resistant industrial piping and process systems.
Major Industrial Applications of TP304H welded stainless steel tubes
- ASTM A269 TP304H welded stainless steel tubes are widely used in:
- 🔸Petrochemical Processing Plants
- 🔸Refinery Process Equipment
- 🔸Industrial Heat Exchanger Systems
- 🔸High Temperature Piping Systems
- 🔸Power Generation Plants
- 🔸Chemical Processing Facilities
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