ASTM A269 TP304 Welded Bright Annealed Tubing For Oil Gas
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What is the ASTM A269 standard?
ASTM A269 specification for seamless and welded Austenitic stainless steel tubing for general service. This specification covers grades of nominal-wall-thickness, stainless steel tubing for general corrosion-resisting and low- or high-temperature service.
GNEE provides ASTM A269 TP304 welded bright annealed tubing for oil and gas applications, manufactured from 18.0-20.0% chromium and 8.0-10.5% nickel with low carbon content (≤0.08%) to balance corrosion resistance and weldability.
The ASTM A269 TP304 tubing features a bright annealed surface finish (Ra ≤ 0.4μm) that enhances corrosion resistance in harsh oilfield environments and provides a smooth interior for efficient fluid flow.
Our TP304 welded bright annealed tubes have outer diameters of 6.35-50.8mm, wall thicknesses of 0.5-1.65mm, and strict tolerances (outer diameter ±0.05mm, wall thickness ±0.03mm), specifically designed for critical oil and gas components such as instrumentation lines, chemical injection systems, and low-pressure process piping.
All tubing is supplied with mill test certificates (EN 10204 3.1) and optional third-party corrosion resistance test reports, ensuring reliable performance in upstream, midstream, and downstream oil and gas operations.
Chemical Composition of ASTM A269 TP304 Welded Bright Annealed Tubing
| Grade | C | Si | Mn | Cr | Ni | Mo | S | P | Fe |
|---|---|---|---|---|---|---|---|---|---|
| TP304 | 0,08 | 1,0 | 2 | 18 – 20 | 8 – 11 | – | 0,03 | 0,045 | Bal |
Physical Properties of ASTM A269 TP304 Welded Tubing
| Grade | Density (kg/m3) | Electrical Resistivity | Elastic Modulus | Thermal Conductivity (W/m.K) | Mean Coefficient of Thermal Expansion (m/m/0C) | Specific Heat 0-1000C (J/kg.K) | |||
|---|---|---|---|---|---|---|---|---|---|
| at 1000C | at 5000C | 0-1000C | 0-3150C | 0-5380C | |||||
| 304 | 8000 | 720 | 193 | 16.2 | 21.5 | 17.2 | 17.8 | 18.4 | 500 |
Mechanical Composition of ASTM A269 TP304 Bright Annealed Tubing
| Grade | Tensile Strength(Mpa) | Yield Point(Mpa) | Elongation(%) | Hardness(HRB) | Solution Temperature |
|---|---|---|---|---|---|
| TP304 | 515 | 205 | 35 | 90 | 1040 Degree |
Applications
GNEE Stainless Steel manufactures TP304 welded and seamless pipes conforming to ASTM A269/SA269 standards for applications such as heat exchanger tubes and coils. All pipes are heat treated in accordance with standard specifications.
What are the tolerances for ASTM A269 TP304 stainless steel pipe?
ASTM A269 TP304 pipe tolerances are specified by the latest version of the standard, but typically include variations in outside diameter (OD), wall thickness, and length. Wall thickness tolerances can be as high as ±10% for many sizes, while OD tolerances vary significantly depending on pipe diameter. For precise, up-to-date data, consult the official ASTM A269 standard, the supplier's technical documentation, or contact us directly!
Email: info@gneestainless.com
What is the difference between ASTM A269 and A249?
ASTM A269 standard applies to general-purpose seamless and welded austenitic stainless steel tubes, widely used in a variety of equipment and tubing, including bright tubes and coils, etc. ASTM A249 standard is specifically designed for welded austenitic steel boilers, superheaters, Heat exchangers and condensers and other pressure piping stainless steel welded tube.
If you have a project need for TP304 stainless steel bright annealed tubing, we welcome your order. GNEE has a large inventory of popular products for you to choose from. We offer a variety of practical product forms, including seamless and welded. For detailed chemical composition and free samples, please contact our factory today. We offer competitive pricing and excellent service.
