ASTM A269 TP304L Pickled and Annealed Stainless Steel Tube
May 18, 2026
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GNEE Stainless Steel is a supplier and manufacturer of ASTM A269 TP304L stainless steel tubes, offering products in a wide range of specifications. According to the latest ASTM A269/A269M-26 standard, the material must be supplied in a solution-annealed condition, with an annealing temperature not lower than 1040°C, followed by water quenching or rapid cooling. This process ensures complete carbide dissolution, uniform microstructure, and prevention of intergranular corrosion after welding.
ASTM A269 TP304L stainless steel round tubes include both seamless and welded tubes. After pickling treatment, the oxide scale on the surface is completely removed, presenting a uniform gray-white appearance. The pickling process removes oxide layers and facilitates subsequent processing or coating adhesion. Some products can further undergo bright annealing (BA) treatment to improve surface finish. Specifications cover outer diameters from 6–219 mm and wall thicknesses from 0.4–3.0 mm, with customized lengths available.
ASTM A269 TP304L pickled and annealed stainless steel tubes are supplied in a solution-annealed and pickled condition to ensure uniform structure and qualified performance. They are widely used in food processing, pharmaceutical, biotechnology, clean piping, and chemical instrumentation systems where high hygiene and corrosion resistance are required. In addition, eddy current testing, hydrostatic testing, intergranular corrosion testing, and full material test reports are provided to ensure complete product quality traceability.
AISI 304 Annealed Pickled (AP) Tube specification
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Product Description: |
AISI 304 Stainless Steel Seamless Annealed Pickled (AP) Tube ,12x1.5 mm |
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Material Grade: |
TP 304(S30400),TP 304L (S30403),TP 304H (S30409) |
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Standard: |
ASTM A269 |
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Specification: |
1.Outer Diameter):6 mm-630 mm(1/8 inch-24 inch) |
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Surface: |
Acid Pickling; Polishing; Bright Annealing; Sand Blasting; Shot Blasting / Shot Peening |
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Testing: |
Tensile Strength;Reverse bending test;Flattening test;Flare test;Flange test;Dimensional;Hydrostatic Test;Pneumatic Test;Hardness;Eddy Current test;Intergranular Corrosion |
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Pipe End: |
Plain End (PE) ;Beveled End (BE) |
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Pipe's Markings: |
ASTM A269 TP304 12*1.5 MM HEAT NO.:*********** HT |
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Value Added Services: |
Customize Length Cutting; Bending; Polishing (180#,240#,320#,400#,600#); Shot Blasting / Shot Peening; Drilling/Punching; Oil Degreasing; Print Colour Code |
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Delivery Time: |
For ready stock :7 days ;For MTO: 30 days |
If you have project requirements for ASTM A269 TP304L Stainless Steel Tubes, please feel free to place an order. GNEE has a large inventory of popular products for you to choose from. They are available in a variety of surface finishes.
Chemical Composition:
| Grade | UNS Design |
Composition, % | ||||||||||||||
| C | Mn | P | S | Si | Cr | Ni | Mo | Ti | Nb | N | Cu | Ce | B | Al | ||
| TP304L | S30403 | 0.035 | 2 | 0.045 | 0.03 | 1 | 18.0–20 | 8.0–13 | . . . | . . . | . . . | . . . | . . . | . . . | ||
ASTM A269 Grade TP304L Bright Annealed Tubes Mechanical Properties
| Grade | Tensile | ||||
| Ultimate/Minimum | Yield/Minimum | Elongation/Minimum | |||
| MPA | KSI | MPA | KSI | % | |
| 304L | 485 | 70 | 170 | 25 | 35 |
ASME SA 269 Grade 304L Seamless Tubing Weight Chart
| Nominal Size (inches) | Outside Diameter (OD) mm | Weight per Meter (kg) | Wall Thickness (mm) |
|---|---|---|---|
| 3" | 76.20 | 7.10 | 3.00 |
| 1/8" | 3.18 | 0.22 | 0.30 |
| 1" | 25.40 | 2.45 | 1.50 |
| 5/16" | 7.94 | 0.50 | 0.40 |
| 2" | 50.80 | 4.50 | 2.00 |
| 3/8" | 9.53 | 0.65 | 0.45 |
| 1-1/4" | 31.75 | 3.00 | 1.60 |
| 1/2" | 12.70 | 1.10 | 0.80 |
| 1-1/2" | 38.10 | 3.58 | 1.80 |
| 5/8" | 15.88 | 1.48 | 1.00 |
| 2-1/2" | 63.50 | 5.60 | 2.50 |
| 3/4" | 19.05 | 1.84 | 1.10 |
| 4" | 101.60 | 9.90 | 3.50 |
Applications
Chemical processing, petrochemical, and marine industries.
Hydraulic and instrumentation systems.
Aerospace, electronics, and medical device manufacturing.
Heat exchangers, condensers, and high-pressure fluid/gas transport.
ASTM A269 TP304L AP VS BA Surface Treatment
The core difference lies in the heat treatment and finishing processes, which affect the appearance and surface cleanliness.
AP (Annealed & Pickled) Process:
The tube is annealed under normal temperature and atmospheric conditions. Surface roughness (Ra) is usually higher, typically ranging from 0.8 to 1.6 μm. It is commonly used for general fluid/gas pipelines, structural frameworks, or architectural applications.
BA (Bright Annealed) Process:
The tube undergoes final heat treatment in a controlled protective atmosphere (usually hydrogen or dissociated ammonia gas) to prevent oxidation. Surface roughness (Ra) is significantly smoother, typically less than 0.4 μm. It is widely used in food and beverage processing, pharmaceutical industries, medical gas distribution, and specialty semiconductor gas systems.
What are the differences between ASTM A269 and ASTM A312 steel pipes?
ASTM A269 is a type of tubing. It is primarily measured by outer diameter (OD) and wall thickness (WT). It has more precise tolerances and is commonly used in instrumentation, heat exchangers, and general industrial piping.
ASTM A312 is a type of piping. It is primarily measured by nominal diameter (NPS) and schedule number (e.g., Sch10/40). It is commonly used in large industrial pipelines for transporting fluids.
ASTM A269 TP304L Pickled and Annealed pipe price
The price of ASTM A269 TP304L pickled and annealed tubing typically ranges from $2.50 to $7.00 per kilogram, or $1,500 to $3,000 per metric ton. The exact price depends on the tubing's specifications (outer diameter and wall thickness), whether it is welded or seamless, and whether it has undergone bright annealing.
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Packaging & Protection
Plastic Caps: Polyethylene (PE) plastic caps must be installed at both ends of the pipes.
Hexagonal Bundles: Small-diameter pipes are typically bundled in hexagonal shapes for easy lifting and space saving.
Woven Bags: Each bundle is wrapped in a moisture-proof woven fabric.
Each pipe should have a clear inkjet print (Stencil):
Format: ASTM A269 TP304L SMLS (or WLD) [Outer Diameter x Wall Thickness] AP [Heat No.] [Factory Mark/Brand]
The packaging should have an external label (Tag) indicating the contract number, material, specifications, quantity, weight, and production date.
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