ASTM A269 TP304 Bright Annealed Coiled Tubing
GNEE supplies ASTM A269 TP304 bright annealed stainless steel coil tubing in strict compliance with international standards, supported by our well-established quality management system and extensive export service experience.
Our 304 stainless steel coil tubing features precisely controlled chemical composition (Cr 18.0–20.0%, Ni 8.0–10.5%), offering excellent corrosion resistance and formability. The bright annealed surface is clean and free of oxide scale, with a surface roughness (Ra) ≤ 0.6 μm, making it an ideal choice for instrumentation, hydraulic, and pneumatic systems.
We offer a wide specification range, with outer diameters from 3 mm to 25 mm and wall thicknesses from 0.5 mm to 2.0 mm. Dimensional tolerances are controlled within ±0.05 mm. The tubing is supplied in continuous coil form, with single coil lengths up to 1000 meters. Each coil undergoes eddy current testing, hydrostatic testing, and hardness inspection, and is supplied with a complete MTC 3.1 certificate.
For instrumentation systems and hydraulic lines, even minor impurities inside the tubing can cause valve blockages. Hardness is typically controlled below 90 HRB; excessive hardness may lead to cracking or poor sealing during bending or ferrule connections. GNEE's 304 stainless steel coil tubing is specially cleaned, dried, and fitted with end caps to prevent dust contamination during transportation.
ASTM A269 TP304 Coiled Tubing Specification
| Feature | Technical Specification |
| Standard | ASTM A269 / ASME SA269 |
| Grade | TP304 (UNS S30400 / 1.4301) |
| Manufacturing Type | Seamless (SMLS) or Welded (WLD) |
| Outside Diameter (OD) | 1/8" to 1" (3.18mm to 25.4mm) |
| Wall Thickness (WT) | 0.020" to 0.083" (0.5mm to 2.11mm) |
| Coil Length | 50m to 1000m+ (depending on OD/WT and customer requirements) |
| Surface Finish | Bright Annealed (BA) – smooth, reflective finish |
| Hardness | ≤ 90 HRB (Rockwell B) / ≤ 192 HB (Brinell) |
ASTM A269 TP304 Stainless Steel Tube Chemical Composition
| Element | Percentage (%) |
| Carbon (C) | 0.08 max |
| Manganese (Mn) | 2.00 max |
| Phosphorus (P) | 0.045 max |
| Sulfur (S) | 0.030 max |
| Silicon (Si) | 0.75 max |
| Chromium (Cr) | 18.0 – 20.0 |
| Nickel (Ni) | 8.0 – 11.0 |
ASTM A269 TP304 SS pipe Mechanical Properties
| Property | Value (Metric) | Value (Imperial) |
| Tensile Strength (min) | 515 MPa | 75 ksi |
| Yield Strength 0.2% (min) | 205 MPa | 30 ksi |
| Elongation in 2 in. (min) | 35% | 35% |
Standard Tolerances for ASTM A269 Coiled Tubing
| 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 |
To obtain an accurate quotation, please provide:
Standard & Grade: e.g., ASTM A269 TP304.
Outer Diameter & Wall Thickness: e.g., 1/2" OD x 0.049" WT.
Coil Length: e.g., 100 meters per coil.
Manufacturing Process: Seamless or Welded.
Surface Finish: Bright Annealed (BA).
Lead Time
Stock Availability: Common sizes (such as 1/4", 3/8", 1/2" OD) are typically kept in regular stock and can be shipped within 3–7 days after contract confirmation.
Custom Production: For special wall thicknesses or extra-long lengths, the production lead time is generally 15–30 days.
Testing & Quality Control
To ensure full compliance with ASTM A269 standards, every batch of coil tubing supplied by GNEE undergoes strict testing procedures:
100% Hydrostatic Test: Ensures no leakage under high-pressure conditions.
100% Eddy Current Test: Detects internal micro-defects in the tube wall.
Hardness Testing: Ensures hardness is controlled below 90 HRB for easy flaring and bending on-site.
Quality Documentation: Mill Test Certificates (MTC) in accordance with EN 10204 3.1 are provided, with support for third-party inspections by agencies such as SGS, BV, and TÜV.
Packed in woven bag or plywood box, plywood spool, convenient for transportation and storage;The finished stainless steel coiled tubes will be wound into a roll and packed into plywood box,or it's wrapped in plywood spools,Maritime, ground and air transport are convenient,Reduce transportation costs and facilitate customer inventory storage.
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