ASTM A269 TP316L Stainless Steel Coil Tube used in Oil and Gas
ASTM A269 TP316L stainless steel coil tubing for oil and gas is a high-performance austenitic stainless steel pipe available in seamless or welded construction (in accordance with ASME B31.3) with a tensile strength of 485-690 MPa and a yield strength ≥170 MPa. It typically has an outer diameter of 6.35-25.4 mm and a wall thickness of 0.5-1.2 mm. It is designed to withstand the harsh conditions of the oil and gas environment, including corrosion resistance to hydrogen sulfide, carbon dioxide, and chlorides, ensuring reliable performance in upstream exploration, midstream transportation, and downstream processing applications.
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316/L (UNS S31600/UNS S31603) Chemical Composition % (Max.)
| Cr Chromium |
Ni Nickel |
C Carbon |
Mo Molybdenum |
Mn Manganese |
Si Silicon |
Ph Phosphorus |
S Sulfur |
| 16.0-18.0 | 10.0-14.0 | 0.030 | 2.0-3.0 | 2.00 | 1.00 | 0.045 | 0.30* |
316 / 316L Mechanical Property
| Grade | Tensile Strength(Mpa) | Yield Point(Mpa) | Elongation(%) | Elongation(%) |
| 316L | 485 | 170 | 35 | 25 |
ASTM A269 TP316L Stainless Steel BA (Bright Annealed) Coil Tube for Oil and Gas Applications Specification
|
Item |
Specification |
Technical Standards & Performance |
|---|---|---|
|
Manufacturing Process |
Seamless/welded (conforming to ASME B31.3) |
Surface roughness Ra ≤ 0.4μm; BA process improves surface cleanliness and corrosion resistance |
|
Dimensions |
Outer Diameter (OD): 6.35 - 25.4mm |
Tolerances: OD ±0.05mm, WT ±0.03mm, Straightness ≤0.15mm/m |
|
Typical Service Conditions |
Upstream oil extraction (H₂S wells) |
Temperature Range: -200°C to 600°C (short-term up to 800°C); Pitting Resistance Equivalent Number PREN ≥ 25 |
|
Surface Finish |
Bright Annealed (BA) – Silver-white luster, no oxide scale, high cleanliness |
Optimized surface roughness (Ra ≤ 0.4μm) reduces fluid resistance and scaling risks |
|
Supply Form |
Coiled tube (continuous length, custom cut-to-length available) |
Common inventory sizes: OD 12.7mm×WT 0.8mm, OD 19.05mm×WT 1.0mm |
|
Quality Certification |
Material Test Certificate (MTC) |
Ensures resistance to sulfide cracking in H₂S environments; full traceability |
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