China Stainless Steel
stainless steel
coiled tube
TeCarve’s Stainless Steel Coiled Tube offers a space-saving, continuous-length tubing solution with exceptional flexibility and corrosion resistance.
Ideal for instrumentation, heat tracing, fluid and gas transmission, and hydraulic control lines, these coils minimize connection points, reducing leakage risks and enhancing flow efficiency. Manufactured from high-grade stainless steel, each coil undergoes precise cold drawing and annealing to ensure dimensional consistency and mechanical strength.
Available in both seamless and welded forms, TeCarve’s coils are delivered in customized lengths and finishes to match the most demanding industrial applications.
For custom coil lengths, dimensions, and production coordination, see our custom stainless steel tube fabrication service.
Specifications
Available Sizes by Standard
Markets: N. America — small-diameter seamless & welded tube, joint-free coil supply
| OD (mm) | WT (mm) | OD Tol. | WT Tol. |
|---|---|---|---|
| 0.80 | 0.15 | ±0.13mm | ±15% |
| 1.59 | 0.20 | ±0.13mm | ±15% |
| 3.18 | 0.35 | ±0.13mm | ±15% |
| 4.76 | 0.49 | ±0.13mm | ±15% |
| 6.35 | 0.71 | ±0.13mm | ±15% |
| 9.53 | 0.89 | ±0.13mm | ±15% |
| 12.70 | 1.24 | ±0.13mm | ±15% |
| 15.88 | 1.65 | ±0.13mm | ±10% |
| 19.05 | 1.65 | ±0.13mm | ±10% |
- Supply Length / Form: Joint-free coils up to 1,500 m, or custom cut lengths
- Available Grades: 304, 304L, 316, 316L, 321, duplex 2205, etc.
- Surface Finish: Annealed & pickled, polished, bright annealed, or as requested
- Tolerance Compliance: Per ASTM A269/A213, EN 10216-5/10217-7, JIS G3463/G3459, or GB/T general tolerance tables
Markets: N. America — seamless heat exchanger & instrumentation coil tube
| OD (mm) | BWG | WT (mm) | OD Tol. | WT Tol. |
|---|---|---|---|---|
| 6.35 | 20 | 0.89 | ±0.10mm | ±10% |
| 9.53 | 18 | 1.24 | ±0.10mm | ±10% |
| 12.70 | 16 | 1.65 | ±0.10mm | ±10% |
| 15.88 | 16 | 1.65 | ±0.10mm | ±10% |
| 19.05 | 16 | 1.65 | ±0.10mm | ±10% |
| 22.23 | 16 | 1.65 | ±0.10mm | ±10% |
| 25.40 | 14 | 2.11 | ±0.15mm | ±10% |
- Supply Length / Form: Joint-free coils up to 1,500 m, or custom cut lengths
- Available Grades: 304, 304L, 316, 316L, 321, duplex 2205, etc.
- Surface Finish: Annealed & pickled, polished, bright annealed, or as requested
- Tolerance Compliance: Per ASTM A269/A213, EN 10216-5/10217-7, JIS G3463/G3459, or GB/T general tolerance tables
Markets: Europe, Middle East — small-diameter precision & instrumentation coil tube
| OD (mm) | WT (mm) | OD Tol. | WT Tol. |
|---|---|---|---|
| 6.0 | 1.0 | ±0.15mm (±2.5%) | ±0.13mm (±12.5%) |
| 8.0 | 1.0 | ±0.15mm (±1.9%) | ±0.13mm (±12.5%) |
| 10.0 | 1.5 | ±0.15mm (±1.5%) | ±0.19mm (±12.5%) |
| 12.0 | 1.5 | ±0.15mm (±1.3%) | ±0.19mm (±12.5%) |
| 14.0 | 1.5 | ±0.15mm (±1.1%) | ±0.19mm (±12.5%) |
| 17.2 | 2.0 | ±0.20mm (±1.2%) | ±0.25mm (±12.5%) |
| 21.3 | 2.3 | ±0.20mm (±0.9%) | ±0.29mm (±12.5%) |
- Supply Length / Form: Joint-free coils up to 1,500 m, or custom cut lengths
- Available Grades: 304, 304L, 316, 316L, 321, duplex 2205, etc.
- Surface Finish: Annealed & pickled, polished, bright annealed, or as requested
- Tolerance Compliance: Per ASTM A269/A213, EN 10216-5/10217-7, JIS G3463/G3459, or GB/T general tolerance tables
Markets: Japan, Southeast Asia — small-diameter boiler/instrumentation coil tube
| OD (mm) | WT (mm) | OD Tol. | WT Tol. |
|---|---|---|---|
| 6.0 | 1.0 | ±0.30mm (±5.0%) | ±0.13mm (±12.5%) |
| 8.0 | 1.0 | ±0.30mm (±3.8%) | ±0.13mm (±12.5%) |
| 10.0 | 1.2 | ±0.30mm (±3.0%) | ±0.15mm (±12.5%) |
| 12.7 | 1.65 | ±0.30mm (±2.4%) | ±0.21mm (±12.5%) |
| 17.3 | 1.65 | ±0.30mm (±1.7%) | ±0.21mm (±12.5%) |
| 21.7 | 2.0 | ±0.40mm (±1.8%) | ±0.25mm (±12.5%) |
- Supply Length / Form: Joint-free coils up to 1,500 m, or custom cut lengths
- Available Grades: 304, 304L, 316, 316L, 321, duplex 2205, etc.
- Surface Finish: Annealed & pickled, polished, bright annealed, or as requested
- Tolerance Compliance: Per ASTM A269/A213, EN 10216-5/10217-7, JIS G3463/G3459, or GB/T general tolerance tables
Markets: China domestic & Belt-and-Road — small-diameter precision coil tube
| OD (mm) | WT (mm) | OD Tol. | WT Tol. |
|---|---|---|---|
| 6 | 1.0 | ±0.10mm (±1.7%) | ±0.13mm (±12.5%) |
| 8 | 1.0 | ±0.10mm (±1.3%) | ±0.13mm (±12.5%) |
| 10 | 1.5 | ±0.10mm (±1.0%) | ±0.19mm (±12.5%) |
| 12 | 1.5 | ±0.12mm (±1.0%) | ±0.19mm (±12.5%) |
| 14 | 2.0 | ±0.14mm (±1.0%) | ±0.25mm (±12.5%) |
| 18 | 2.0 | ±0.18mm (±1.0%) | ±0.25mm (±12.5%) |
| 20 | 2.5 | ±0.20mm (±1.0%) | ±0.31mm (±12.5%) |
| 25 | 2.5 | ±0.25mm (±1.0%) | ±0.31mm (±12.5%) |
- Supply Length / Form: Joint-free coils up to 1,500 m, or custom cut lengths
- Available Grades: 304, 304L, 316, 316L, 321, duplex 2205, etc.
- Surface Finish: Annealed & pickled, polished, bright annealed, or as requested
- Tolerance Compliance: Per ASTM A269/A213, EN 10216-5/10217-7, JIS G3463/G3459, or GB/T general tolerance tables
Standards
→ Scroll right for full chemistry & mechanical data
| Grade | US (UNS) | EN (W.Nr.) | Japan (JIS) | China (GB/T) | C % (Max) | Si % (Max) | Mn % (Max) | P % (Max) | S % (Max) | Cr % | Ni % | Mo % | Tensile σb (Min.) | Yield σ0.2 (Min.) | Elongation (Min.) | Hardness (Max) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2205 Duplex* | S32205 | 1.4462 | SUS329J3L* | 022Cr23Ni5Mo3N* | 0.030 | 1.00 | 2.00 | 0.030 | 0.020 | 22.0-23.0 | 4.5-6.5 | 3.0-3.5 | 655 MPa (95 ksi) | 450 MPa (65 ksi) | 25% | ≤31 HRC / ≤293 HB |
| 304 | S30400 | 1.4301 | SUS304 | 06Cr19Ni10 | 0.08 | 0.75 | 2.00 | 0.045 | 0.030 | 18.0-20.0 | 8.0-10.5 | — | 515 MPa (75 ksi) | 205 MPa (30 ksi) | 35% | ≤92 HRB / ≤215 HV |
| 304L | S30403 | 1.4307 | SUS304L | 022Cr19Ni10 | 0.030 | 0.75 | 2.00 | 0.045 | 0.030 | 18.0-20.0 | 8.0-12.0 | — | 485 MPa (70 ksi) | 170 MPa (25 ksi) | 35% | ≤92 HRB / ≤215 HV |
| 316 | S31600 | 1.4401 | SUS316 | 06Cr17Ni12Mo2 | 0.08 | 0.75 | 2.00 | 0.045 | 0.030 | 16.0-18.0 | 10.0-14.0 | 2.0-3.0 | 515 MPa (75 ksi) | 205 MPa (30 ksi) | 35% | ≤95 HRB / ≤215 HV |
| 316L | S31603 | 1.4404 | SUS316L | 022Cr17Ni12Mo2 | 0.030 | 0.75 | 2.00 | 0.045 | 0.030 | 16.0-18.0 | 10.0-14.0 | 2.0-3.0 | 485 MPa (70 ksi) | 170 MPa (25 ksi) | 35% | ≤95 HRB / ≤215 HV |
| 321 | S32100 | 1.4541 | SUS321 | 06Cr18Ni11Ti | 0.08 | 0.75 | 2.00 | 0.045 | 0.030 | 17.0-19.0 | 9.0-12.0 | — | 515 MPa (75 ksi) | 205 MPa (30 ksi) | 35% | ≤95 HRB / ≤215 HV |
- Standards Conformance: ASTM A269/A213 · EN 10216-5/10217-7 · JIS G3463/G3448 · GB/T 12771/13296 · ISO 1127
- Delivery Condition: Solution Annealed & Pickled (AP) / Bright Annealed (BA) / Polished, or as requested.
- Mill Test Certificate: 100% full material traceability with EN 10204 3.1 MTC provided with every shipment.
- Cross-Reference Note: 2205 duplex JIS/GB cross-reference figures are compiled from secondary industry sources — please confirm exact specification and heat-specific mill test certificate with TeCarve for critical applications.
Features
• Continuous coil without welds
• Excellent flexibility and strength
• Leak-resistant and corrosion-proof
• Suitable for tight space installation
Applications
• Oil & gas instrumentation systems
• Heat tracing and thermal control
• Pneumatic and hydraulic piping
• Semiconductor and biotech industries
For continuous coiled tubing in subsea, chemical injection, or downhole control systems, learn how buyers can verify our long-length orbital welding, continuous hydrostatic testing, and spool packaging.
Quality Control
• 100% hydrostatic and air under water testing
• Coil flattening, flaring, and bending inspection
• Eddy current and intergranular corrosion tests
• Certified Mill Test Reports (MTRs) provided
packaging
PVC Wrapping
& End Caps
Custom Barcoding
& Labeling
Anti-Corrosion
& Moisture Protection
Seaworthy Wooden Cases & Pallets
Coiled Tube Packaging & Loading Photos
Real factory, inspection, packaging and loading photos from TeCarve gallery pages.
Tailored Solutions, Timely Fulfillment
CUSTOMIZATION
& DELIVERY
Flexible Custom Manufacturing
We tailor stainless steel coiled tube by outer diameter, wall thickness, joint-free coil length, grade, seamless or welded construction, surface finish, and customer-specified tolerances.
Low MOQ & Rapid Prototyping
Small batch customization and sample production are supported, helping you shorten your development cycle and market entry.
Optimized Lead Time
Most orders ship within 10–25 days after deposit. Exact timing depends on product specification, required documentation, and order volume.
Global Logistics & On-Time Delivery
For coiled tube exports to over 50 countries, PVC wrapping and anti-corrosion and moisture protection are emphasized, with seaworthy pallets supporting secure coil handling.
Frequently Asked Questions
What is stainless steel coiled tube?
Stainless steel coiled tube is seamless or welded tube produced in continuous coils, eliminating field joints for long runs. It is used in heat exchangers, chemical injection lines, HVAC, refrigeration, and precision instrument tubing applications.
What OD and wall thickness are available for coiled stainless steel tube?
Coiled tube is available in OD from 0.8 mm to 25.4 mm with wall thickness 0.2 mm to 2.5 mm. Coil lengths exceed 300 m for small OD tubes. Standard grades are 304, 316L, and duplex 2205; all supplied in fully annealed condition.
What is the minimum bend radius for stainless steel coiled tube?
Minimum bend radius is typically 3× OD for seamless tube and 4× OD for welded tube in soft-annealed condition. Tighter radii are achievable with mandrel bending for small-OD precision coils.
What standards apply to coiled stainless steel tube?
Coiled tubes comply with ASTM A269 (general service seamless and welded), ASTM A213 (boiler/heat exchanger service), EN 10216-5, and EN 10217-7. Full hydrostatic testing and material certification are standard.
What are the advantages of coiled tube over straight tube in the field?
Coiled tube eliminates field joints and compression fittings, reducing leak points. It allows continuous instrument or chemical injection runs over long distances. The coil form also improves heat transfer in compact immersion heat exchangers.