ASTM A269 TP316L Stainless Steel Bright Annealed Coiled Tubing
May 21, 2026
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With more than 18 years of experience in stainless steel tube export, GNEE maintains over 5,000 tons of regular inventory, enabling fast delivery within 7 days. We also support customized bending, cutting, and pre-cleaning services. Every batch of products undergoes 100% eddy current testing and hydrostatic testing, and is supplied with EN 10204 3.1 material certificates as well as third-party SGS/TPV inspection reports.
GNEE's ASTM A269 TP316L stainless steel bright annealed coiled tubing is manufactured from TP316L low-carbon austenitic stainless steel, with carbon content ≤0.03% and molybdenum content of 2.0–3.0%. It offers excellent resistance to chloride pitting corrosion, with a PREN value ≥25. The tubing undergoes solution heat treatment at a minimum temperature of 1040°C (1900°F), followed by water quenching or rapid cooling to ensure optimal corrosion resistance and mechanical performance. It can operate reliably in long-term service conditions up to ≤600°C.
The TP316L stainless steel coiled tubing is available in outer diameters ranging from 1.6–25 mm and wall thicknesses from 0.4–2.1 mm, with tolerance controlled within ±0.03 mm. Single coil lengths can reach up to 1000 meters without welding, significantly reducing the risk of leakage at connection points and lowering installation costs. The surface is bright annealed, with inner and outer wall roughness of Ra ≤0.4 μm, meeting the high cleanliness requirements for fluid transportation in pharmaceutical, semiconductor, and other ultra-clean industries.
316L stainless steel coil tube specifications
| Thickness | 0.1 to 2mm, |
| Brand | Imported |
| Material Grade | 304,304L,316,316L,321,316Ti |
| Diameter | 1.5 to 15 mm OD, expecially 1/4inch, 3/8 inch used largely.
Stock size: 6.35mm*1.24mm ,8*0.5mm ,8*0.6mm,8*0.8mm, 8*0.9mm,8*1mm, 9.53*1.24mm,10*1mm,ect.. |
| Shape | Round |
| Unit Pipe Length | we can produce at least 8000feet-10,000 feet per Length,
Also the Length can be customised by clients, |
| Range | All sizes and length available |
| Size | As per the requirment |
| Surface | Bright annealed, Polished |
| Pipe Fluid | Chemical, Water, Gas,Oil |
| Minimum Order Quantity | 50 Feet |
ASTM A269 TP316L Coiled Tubing Chemical Composition
| STAINLESS STEEL COILED TUBE GRADES | UNS | C | Mn | P | S | Si | Cr | Ni | Mo | Ti | Nb | N |
| TP316 | S3160 | 0.08 | 2 | 0.045 | 0.03 | 1 | 16.0-18.0 | 11.0-14.0 | 2.0-3.0 | |||
| TP316L | S31603 | 0.035 | 2 | 0.045 | 0.03 | 1 | 16.0-18.0 | 10.0-14.0 | 2.0-3.0 |
Mechanical properties of 316L stainless steel coil pipe
| Material | Heat | Temperure | Tensile Strength | Yield Strength | Elongation %, Min |
| Treatment | Min. | Ksi (MPa), Min. | Ksi (MPa), Min. | ||
| º F(º C) | |||||
| TP316 | Solution | 1900(1040) | 75(515) | 30(205) | 35 |
| TP316L | Solution | 1900(1040) | 70(485) | 25(170) | 35 |
Equivalent grade of stainless steel 316 coil pipe
| GRADE | UNS NO | DIN/WERKSTOFF |
| Stainless Steel Coiled Pipe 316 | S31600 | 1.4401 |
| Stainless Steel Coiled Tube 316L | S31603 | 1.4404 |
standard tolerance of astm a269 coiled tube
| No. | Size, Outside Diameter, in. | Permissible Variations in Outside Diameter, in. (mm) | Permissible Variations in Wall Thickness, % | Permissible Variations in Cut Length, in. (mm) | Thin Walled Tubes | |
| Over | Under | |||||
| 1 | Up to ½[13] | ±0.005(0.13) | ±15 | ⅛(3.2) | 0 | ... |
| 2 | ½ to 1½, excl | ±0.005(0.13) | ±10 | ⅛(3.2) | 0 | less than 0.065 in. (1.65 mm) nominal |
| 3 | 1½ to 3½, excl | ±0.010(0.25) | ±10 | 3/16(4.8) | 0 | less than 0.095 in. (2.41 mm) nominal |
| 4 | 3½ to 5½, excl | ±0.015(0.38) | ±10 | 3/16(4.8) | 0 | less than 0.150 in. (3.81 mm) nominal |
| 5 | 5½ to 8, excl | ±0.030(0.76) | ±10 | 3/16(4.8) | 0 | less than 0.150 in. (3.81 mm) nominal |
| 6 | 8 to 12, excl | ±0.040(1.01) | ±10 | 3/16(4.8) | 0 | less than 0.200 in. (5.08 mm) nominal |
| 7 | 12 to 14, excl | ±0.050(1.26) | ±10 | 3/16(4.8) | 0 | less than 0.220 in. (5.59 mm) nominal |
Normal Size of ASTM A269 Seamless Coiled Tubing
| Normal Size | |||||
| OD 3/16" | WT0.02" | 4.76x0.51mm | OD3/16" | WT0.028" | 4.76x0.71mm |
| OD3/16" | WT0.035" | 4.76x0.89mm | OD3/16" | WT0.049" | 4.76x1.24mm |
| OD0.24" | WT0.04" | 6x1mm | OD0.24" | WT0.06" | 6x1.5mm |
| OD1/4" | WT0.02" | 6.35x0.51mm | OD1/4" | WT0.028" | 6.35x0.71mm |
| OD1/4" | WT0.035" | 6.35x0.89mm | OD1/4" | WT0.049" | 6.35x1.24mm |
| OD1/4" | WT0.065" | 6.35x1.65mm | OD5/16" | WT0.028" | 7.94x0.71mm |
| OD5/16" | WT0.035" | 7.94x0.89mm | OD5/16" | WT0.049" | 7.94x1.24mm |
| OD5/16" | WT0.065" | 7.94x1.65mm | OD3/8" | WT0.028" | 9.53x0.71mm |
| OD3/8" | WT0.035" | 9.53x0.89mm | OD3/8" | WT0.049" | 9.53x1.24mm |
| OD3/8" | WT0.065" | 9.53x1.65mm | OD0.4" | WT0.04" | 10x1mm |
| OD0.4" | WT0.06" | 10x1.5mm | OD0.4" | WT0.079" | 10x2mm |
| OD0.47" | WT0.065" | 12x1mm | OD0.47" | WT0.06" | 12x1.5mm |
| OD1/2" | WT0.028" | 12.7x0.71mm | OD1/2" | WT0.035" | 12.7x0.89mm |
| OD1/2" | WT0.049" | 12.7x1.24mm | OD1/2" | WT0.065" | 12.7x1.65mm |
| OD0.55" | WT0.04" | 14x1mm | OD0.55" | WT0.06" | 14x1.5mm |
| OD5/8" | WT0.028" | 15.88x0.71mm | OD5/8" | WT0.035" | 15.88x0.89mm |
| OD5/8" | WT0.049" | 15.88x1.24mm | OD5/8" | WT0.065" | 15.88x1.65mm |
| OD5/8" | WT0.083" | 15.88x2.11mm | OD0.63" | WT0.065" | 16x1mm |
| OD0.63" | WT0.06" | 16x1.5mm | OD0.63" | WT0.079" | 16x2mm |
| OD3/4" | WT0.04" | 19.05x1mm | OD3/4" | WT0.049" | 19.05x1.24mm |
| OD3/4" | WT0.065" | 19.05x1.65mm | OD3/4" | WT0.083" | 19.05x2.11mm |
| OD1" | WT0.049" | 25.4x1.24mm | OD1" | WT0.0665" | 25.4x1.65mm |
| OD1" | WT0.083" | 25.4x2.11mm | OD1" | WT0.1" | 25.4x2.54mm |
If you are using any of the above projects, please contact us promptly for technical guidance and the latest product pricing!
316L coil pipe applications:
Oil & Gas: Control lines and chemical injection lines.
Instrumentation: Connections for sensors and transmitters in refineries.
Chromatography: High-precision piping for laboratory equipment.
Semiconductors: Ultrapure gas delivery lines.
Beverage & Food: Clean-in-place (CIP) systems.
Before leaving the factory, ASTM A269 TP316L stainless steel coils are required to undergo flaring test, flattening test, hardness test, reverse flattening test, and hydrostatic test or non-destructive electrical test (such as eddy current test).
Packaging & Logistics Protection
Each coil is available in continuous, unsoldered lengths ranging from 500 to 1,000 meters (1,640 to 3,280 feet), depending on specifications. To prevent deformation during transport, the product is precisely wound onto reinforced seven-layer plywood spools or steel I-beams with diameters ranging from 600 mm to 1,000 mm.
Both ends are sealed with high-density polyethylene (PE) end caps to ensure the inner wall remains dry and free from oil contamination. This packaging method ensures an inner wall roughness Ra ≤ 0.5 μm, and even after thousands of kilometers of sea transport, the ellipticity tolerance remains strictly controlled within 5% of the outer diameter.
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