ASTM A269 TP316L Stainless Steel Bright Annealed Tube Polish Finishing 320 Grit
What is ASTM A269 material pipe?
ASTM A269 is actually a standard specification for stainless steel tubing (not heavy industrial schedule pipe), covering nominal-wall-thickness, seamless and welded austenitic steel tubes used for general corrosion-resisting and low- or high-temperature service.
Is ASTM A269 steel annealed?
Yes, the ASTM A269 standard specification explicitly requires that all materials be delivered in a heat-treated condition (i.e., solution-annealed condition).
ASTM A269 TP316L stainless steel bright annealed tubing is a high-precision austenitic stainless steel tube with a bright annealed surface (Ra ≤ 0.4μm) further refined to a 320 grit polish (surface roughness Ra ≈ 0.05-0.1μm). It offers excellent cleanliness and aesthetics, a tensile strength of 485-690MPa, and a yield strength ≥170MPa. It is designed for use in high-purity fluid systems, food/beverage processing, and pharmaceutical equipment, where an ultra-smooth surface (minimizing bacterial adhesion and fluid friction) and corrosion resistance are critical.
Chemical Composition of Stainless Steel 316L Tubes
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | Fe |
| SS 316L | 0.030 max | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 16.00 - 18.00 | 2.00 - 3.00 | 10.00 - 14.00 | 68.89 min |
Mechanical Properties of Stainless Steel 316L Tubes
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 8.0 g/cm3 | 1399 °C (2550 °F) | Psi – 75000 , MPa ≥485MPa | Psi – 30000 , MPa ≥170MPa | 35 % |
Physical Properties of Stainless Steel 316L Tubes
Grade |
Density (kg/m3) |
Elastic Modulus (GPa) |
Mean Co-eff of Thermal Expansion (µm/m/°C) | Thermal Conductivity (W/m.K) |
Specific Heat 0-100°C (J/kg.K) |
Elec Resistivity (nΩ.m) |
|||
| 0-100°C | 0-315°C | 0-538°C | At 100°C | At 500°C | |||||
| 316/L/H | 8000 | 193 | 15.9 | 16.2 | 17.5 | 16.3 | 21.5 | 500 | 740 |
ASTM A269 GR TP316L Round Tubing Permissible Variations
| Specified Dimension, OD | OD | Ratio of Wall Thickness to OD | Permissible Variations In Cut Length | Up To 0.109 | 0.109 to 0.172 | Over 0.172 to 0.203 | Over 0.203 | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Over | Under | Over | Under | Over | Under | Over | Under | Over | Under | Over | Under | ||
| up to 3″ | 0.023 | 0.023 | All Thickness | 3/16 | 0 | 16.5 | 16.5 | 15 | 15 | 14 | 14 | 12.5 | 12.5 |
| 3″ to > 5.5″ | 0.031 | 0.031 | All Thickness | 3/16 | 0 | 16.5 | 16.5 | 15 | 15 | 14 | 14 | 12.5 | 12.5 |
| 5.5″ to > 8″ | 0.047 | 0.047 | All Thickness | 3/16 | 0 | 14 | 14 | 12.5 | 12.5 | ||||
| 8″ to > 10.75″ | 0.047 | 0.047 | 5% and Over | 3/16 | 0 | 12.5 | 12.5 | ||||||
| 10.75″ to > 12.75″ | 0.063 | 0.063 | Under 5% | 3/16 | 0 | 12.5 | 12.5 | ||||||
SA 269 Grade TP316L Coil Tubing Tolerance
| OD, INCH | WT TOLERANCE % | OD TOLERANCE INCH(MM) | LENGTH TOLERANCE INCH(MM) | |
|---|---|---|---|---|
| + | - | |||
| ≤1 /2 | ±15 | ± 0.005 ( 0.13 ) | 1 /8 ( 3.2 ) | 0 |
| > 5 1 /2~< 8 | ±10 | ± 0.030(0.76) | 3 /16(4.8) | 0 |
| > 1 /2~1 1 /2 | ±10 | ±0.005(0.13) | 1 /8(3.2) | 0 |
| > 1 1 /2~< 3 1 /2 | ±10 | ± 0.010(0.25) | 3 /16(4.8) | 0 |
| 8~< 12 | ±10 | ± 0.040(1.01) | 3 /16(4.8) | 0 |
| > 3 1 /2~< 5 1 /2 | ±10 | ± 0.015(0.38) | 3 /16(4.8) | 0 |
| 12~< 14 | ±10 | ± 0.050(1.26) | 3 /16(4.8) | 0 |
A269 316L SS Tube HS Code
| Product Description | Manufacturing Method | International HS Code (First 6 Digits) | Common US/EU Full Code (8-10 Digits) |
| Seamless Tube (Circular) | Cold-drawn or Cold-rolled | 7304.41 | 7304.41.00 |
| Seamless Tube (Circular) | Other (Hot-finished) | 7304.49 | 7304.49.00 |
| Welded Tube (Circular) | Welded | 7306.40 | 7306.40.00 |
| Non-Circular Tube | Seamless or Welded | 7306.61 (Square/Rect) | 7306.61.00 |
What is the difference between ASTM A269 TP316 and TP316L tubing?
The main difference between ASTM A269 TP316 and TP316L stainless steel tubing is the maximum carbon content. TP316 has a carbon limit of 0.08%, while TP316L is an extra-low carbon version capped at 0.03%, which prevents carbide precipitation during welding and improves corrosion resistance at the weld joints.
What is the pressure rating of ASTM A269 TP316L tube?
When the operating temperature exceeds 100°F, the allowable stress decreases, resulting in a lower pressure rating. For example, according to the ASME B31.3 standard, the allowable stress for 316L stainless steel drops to approximately 16,700 psi at elevated temperatures (up to 850°F).
What industries use ASTM A269 TP316L tubing?
Instrumentation & Control Lines: Process control panels and analytical equipment.
Pharmaceutical & Biotech: Clean utility lines requiring ultra-smooth inner surfaces (Ra values often ≤ 0.5 μm).
Food & Beverage Processing: Hygienic and corrosive fluid handling.
Marine & Chemical Environments: Locations prone to salt or chemical exposure.
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ASTM A269 TP316L Stainless Steel Tubing Price
ASTM A269 TP316L stainless steel tubing generally costs between $2.50 to $8.50 per foot for retail cut lengths, or roughly $2,500 to $5,200 per ton wholesale, depending heavily on the outer diameter, wall thickness, order volume, and whether the tubing is seamless or welded.
ASTM A269 TP316L Tubing Supplier,Manufacturer
If you have a project need for 316L stainless steel bright annealed tubes, we welcome your order. GNEE has a large inventory of popular products for you to choose from. They can be processed into a variety of practical product forms, including seamless and welded. We also offer stainless steel polished grits in 120 grit, 180 grit, 320 grit, 400 grit, 600 grit, and 800 grit. For detailed chemical composition and free samples, please contact our factory today. We offer competitive pricing and excellent service.
Quality Inspection
ASTM A269 stainless steel tubing requires chemical analysis, specific mechanical tests (flaring, flange for welded tubes, reverse flattening, and hardness), and 100% nondestructive electric or hydrostatic pressure testing on every individual tube to verify material integrity and performance.
Standard Packaging
1. Individual Protection
Sleeving (Individual Plastic Sleeves): Each pipe is individually encased in a transparent polyethylene (PE) plastic film sleeve.
End Protection (Plastic Caps): Plastic caps must be fitted to both ends of the pipe.
2. Outer Packaging
Plywood Case Packaging (Plywood Cases)
Structure: Cases are constructed from fumigation-free plywood.
Lining: The interior of the case is lined with a layer of waterproof plastic film or woven fabric.
Securing: Wooden supports or nylon dividers are placed at intervals within the case to secure the pipes and prevent movement caused by transport vibrations.
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