China Stainless Steel
stainless steel
heat exchanger
pipe & tube
TeCarve’s Stainless Steel Heat Exchanger Pipe & Tube solutions are engineered for superior thermal conductivity, corrosion resistance, and durability in high-pressure and high-temperature applications.
These tubes are extensively used in condensers, boilers, and coolers across chemical plants, refineries, HVAC systems, and power generation industries. Manufactured from premium stainless steel grades, they ensure long-term operational reliability, minimal maintenance, and efficient heat transfer.
Precision-controlled dimensions and strict testing protocols make them ideal for critical environments where efficiency and safety are paramount.
Available in seamless or welded types, with customizable wall thickness, length, and surface finishes, our heat exchanger tubes are designed to meet global industrial requirements with confidence.
For project-specific sizes, tolerances, and testing requirements, explore our custom stainless steel tube fabrication service.
Specifications
Available Sizes by Standard
Markets: N. America — seamless heat exchanger, boiler tube, condensers (Tube · OD-based)
| 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% |
| 31.75 | 14 | 2.11 | ±0.15mm | ±10% |
| 38.10 | 12 | 2.77 | ±0.15mm | ±10% |
| 44.45 | 12 | 2.77 | ±0.20mm | ±10% |
| 50.80 | 10 | 3.40 | ±0.25mm | ±10% |
| 63.50 | 10 | 3.40 | ±0.30mm | ±10% |
- Supply Length / Form: Fixed lengths 1–12 m; custom lengths and cut-to-length available
- Available Grades: 304, 304L, 316, 316L, 317L, 321, 347, 904L, duplex 2205, etc.
- Surface Finish: Annealed & pickled, polished, bright annealed, or as requested
- Tolerance Compliance: Per ASTM A1016 (A213 seamless / A249 welded), EN ISO 1127, JIS G3463, or GB/T general tolerance tables
Markets: N. America — welded austenitic boiler, superheater, heat exchanger & condenser tube
| OD (mm) | BWG | WT (mm) | OD Tol. | WT Tol. |
|---|---|---|---|---|
| 6.35 | 20 | 0.89 | ±0.10mm | Min. Wall (-0%) / +0.18mm (+20%) |
| 9.53 | 18 | 1.24 | ±0.10mm | Min. Wall (-0%) / +0.25mm (+20%) |
| 12.70 | 16 | 1.65 | ±0.10mm | Min. Wall (-0%) / +0.33mm (+20%) |
| 15.88 | 16 | 1.65 | ±0.10mm | Min. Wall (-0%) / +0.33mm (+20%) |
| 19.05 | 16 | 1.65 | ±0.10mm | Min. Wall (-0%) / +0.33mm (+20%) |
| 22.23 | 16 | 1.65 | ±0.10mm | Min. Wall (-0%) / +0.33mm (+20%) |
| 25.40 | 14 | 2.11 | ±0.15mm | Min. Wall (-0%) / +0.42mm (+20%) |
| 31.75 | 14 | 2.11 | ±0.15mm | Min. Wall (-0%) / +0.42mm (+20%) |
| 38.10 | 12 | 2.77 | ±0.15mm | Min. Wall (-0%) / +0.55mm (+20%) |
| 44.45 | 12 | 2.77 | ±0.20mm | Min. Wall (-0%) / +0.55mm (+20%) |
| 50.80 | 10 | 3.40 | ±0.25mm | Min. Wall (-0%) / +0.68mm (+20%) |
| 63.50 | 10 | 3.40 | ±0.30mm | Min. Wall (-0%) / +0.68mm (+20%) |
- Supply Length / Form: Fixed lengths 1–12 m; custom lengths and cut-to-length available
- Available Grades: 304, 304L, 316, 316L, 317L, 321, 347, 904L, duplex 2205, etc.
- Surface Finish: Annealed & pickled, polished, bright annealed, or as requested
- Tolerance Compliance: Per ASTM A1016 (A213 seamless / A249 welded), EN ISO 1127, JIS G3463, or GB/T general tolerance tables
Markets: Europe, Middle East — pressure piping, petrochemical, power gen heat exchangers
| OD (mm) | WT (mm) | OD Tol. | WT Tol. |
|---|---|---|---|
| 17.2 | 2.0 | ±0.2mm (±1.2%) | ±0.25mm (±12.5%) |
| 21.3 | 2.3 | ±0.2mm (±0.9%) | ±0.29mm (±12.5%) |
| 26.9 | 2.3 | ±0.2mm (±0.7%) | ±0.29mm (±12.5%) |
| 33.7 | 2.6 | ±0.3mm (±0.9%) | ±0.33mm (±12.5%) |
| 48.3 | 2.6 | ±0.36mm (±0.75%) | ±0.33mm (±12.5%) |
| 60.3 | 2.9 | ±0.45mm (±0.75%) | ±0.36mm (±12.5%) |
| 76.1 | 2.9 | ±0.57mm (±0.75%) | ±0.36mm (±12.5%) |
| 114.3 | 3.6 | ±0.86mm (±0.75%) | ±0.45mm (±12.5%) |
| 168.3 | 4.0 | ±1.26mm (±0.75%) | ±0.50mm (±12.5%) |
| 219.1 | 6.3 | ±1.64mm (±0.75%) | ±0.79mm (±12.5%) |
| 355.6 | 8.0 | ±3.56mm (±1.0%) | ±1.00mm (±12.5%) |
| 508.0 | 10.0 | ±5.08mm (±1.0%) | ±1.25mm (±12.5%) |
- Supply Length / Form: Fixed lengths 1–12 m; custom lengths and cut-to-length available
- Available Grades: 304, 304L, 316, 316L, 317L, 321, 347, 904L, duplex 2205, etc.
- Surface Finish: Annealed & pickled, polished, bright annealed, or as requested
- Tolerance Compliance: Per ASTM A1016 (A213 seamless / A249 welded), EN ISO 1127, JIS G3463, or GB/T general tolerance tables
Markets: Japan, Southeast Asia — stainless steel boiler & heat exchanger tube
| OD (mm) | WT (mm) | OD Tol. | WT Tol. |
|---|---|---|---|
| 17.3 | 1.2 | ±0.40mm (±2.3%) | ±0.15mm (±12.5%) |
| 21.7 | 1.2 | ±0.40mm (±1.8%) | ±0.15mm (±12.5%) |
| 27.2 | 1.5 | ±0.40mm (±1.5%) | ±0.19mm (±12.5%) |
| 34.0 | 1.5 | ±0.40mm (±1.2%) | ±0.19mm (±12.5%) |
| 48.6 | 2.0 | ±0.36mm (±0.75%) | ±0.25mm (±12.5%) |
| 60.5 | 2.0 | ±0.45mm (±0.75%) | ±0.25mm (±12.5%) |
| 89.1 | 2.5 | ±0.67mm (±0.75%) | ±0.31mm (±12.5%) |
| 114.3 | 2.5 | ±0.86mm (±0.75%) | ±0.31mm (±12.5%) |
| 165.2 | 3.0 | ±1.24mm (±0.75%) | ±0.38mm (±12.5%) |
| 216.3 | 3.5 | ±1.62mm (±0.75%) | ±0.44mm (±12.5%) |
| 355.6 | 4.5 | ±3.56mm (±1.0%) | ±0.56mm (±12.5%) |
| 609.6 | 6.0 | ±6.10mm (±1.0%) | ±0.75mm (±12.5%) |
- Supply Length / Form: Fixed lengths 1–12 m; custom lengths and cut-to-length available
- Available Grades: 304, 304L, 316, 316L, 317L, 321, 347, 904L, duplex 2205, etc.
- Surface Finish: Annealed & pickled, polished, bright annealed, or as requested
- Tolerance Compliance: Per ASTM A1016 (A213 seamless / A249 welded), EN ISO 1127, JIS G3463, or GB/T general tolerance tables
Markets: China domestic & Belt-and-Road / Chinese-contracted EPC — boiler & heat exchanger tube
| OD (mm) | WT (mm) | OD Tol. | WT Tol. |
|---|---|---|---|
| 6 | 1.0 | ±0.10mm (±1.7%) | ±0.12mm (±12.5%) |
| 14 | 1.5 | ±0.15mm (±1.1%) | ±0.19mm (±12.5%) |
| 25 | 2.0 | ±0.25mm (±1.0%) | ±0.25mm (±12.5%) |
| 34 | 2.5 | ±0.34mm (±1.0%) | ±0.31mm (±12.5%) |
| 45 | 3.0 | ±0.45mm (±1.0%) | ±0.38mm (±12.5%) |
| 76 | 3.5 | ±0.76mm (±1.0%) | ±0.44mm (±12.5%) |
| 108 | 4.0 | ±1.08mm (±1.0%) | ±0.50mm (±12.5%) |
| 159 | 4.5 | ±1.59mm (±1.0%) | ±0.56mm (±12.5%) |
| 219 | 5.0 | ±2.19mm (±1.0%) | ±0.63mm (±12.5%) |
| 273 | 5.5 | ±2.73mm (±1.0%) | ±0.69mm (±12.5%) |
| 377 | 6.0 | ±3.77mm (±1.0%) | ±0.75mm (±12.5%) |
| 630 | 7.0 | ±6.30mm (±1.0%) | ±0.88mm (±12.5%) |
- Supply Length / Form: Fixed lengths 1–12 m; custom lengths and cut-to-length available
- Available Grades: 304, 304L, 316, 316L, 317L, 321, 347, 904L, duplex 2205, etc.
- Surface Finish: Annealed & pickled, polished, bright annealed, or as requested
- Tolerance Compliance: Per ASTM A1016 (A213 seamless / A249 welded), EN ISO 1127, JIS G3463, 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 |
| 317L | S31703 | 1.4438 | SUS317L | 022Cr19Ni13Mo3 | 0.030 | 0.75 | 2.00 | 0.045 | 0.030 | 18.0-20.0 | 11.0-15.0 | 3.0-4.0 | 515 MPa (75 ksi) | 205 MPa (30 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 |
| 347 | S34700 | 1.4550 | SUS347 | 06Cr18Ni11Nb | 0.08 | 0.75 | 2.00 | 0.045 | 0.030 | 17.0-19.0 | 9.0-13.0 | — | 515 MPa (75 ksi) | 205 MPa (30 ksi) | 35% | ≤92 HRB / ≤215 HV |
| 904L* | N08904 | 1.4539 | N/A | 015Cr20Ni18Mo6CuN* | 0.020 | 1.00 | 2.00 | 0.045 | 0.035 | 19.0-23.0 | 23.0-28.0 | 4.0-5.0 | 490 MPa (71 ksi) | 215 MPa (31 ksi) | 35% | ≤90 HRB / ≤200 HV |
- Standards Conformance: ASTM A213/A249 · EN 10216-5/10217-7 · DIN 17456/17458 · JIS G3459/G3463 · GB/T 24593/13296 · 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 and 904L 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
• High thermal efficiency
• Superior corrosion resistance
• Customizable configurations
• Smooth internal surface for optimized flow
Applications
For critical heat exchanger and condenser bundles, explore how engineers and procurement teams can verify our factory testing, hydro-test parameters, eddy current inspection, and MTC documentation prior to shipment.
Quality Control
• 100% Eddy current and hydrostatic testing
• PMI and chemical composition analysis
• Dimensional inspection (OD, WT, Length)
• Third-party inspection available on request
What Quality Tests Does TeCarve Heat Exchanger Tube Pass Before Delivery?
Every heat exchanger tube batch runs 100% flattening, flaring/expansion, and bending tests to confirm the tube can go through tube-to-tubesheet expansion (tube expanding) in the field without cracking; welded heat exchanger tube additionally gets a reverse flattening test on the weld seam. This is on top of the 100% eddy current and hydrostatic testing already covered above.
For projects specifying it, an intergranular corrosion (IGC) test to ASTM A262 (Practice E or Practice A) or GB/T 4334 can also be performed — this is a project-specified test rather than a standard default on every order, so flag it at inquiry stage if your specification requires it.
Why Would a Heat Exchanger Tube Fail a Hydrostatic Pressure Test?
A hydrostatic test rarely creates a problem — it reveals one that already existed. Common root causes include pitting or crevice corrosion that has locally thinned the wall, stress corrosion cracking from chloride exposure (cracks can be invisible before pressure is applied), weld or fabrication defects, wrong alloy for the service environment, and mechanical wear at baffles or tube-to-tubesheet joints from vibration.
Because these defects are often not visible before testing, TeCarve runs 100% eddy current and hydrostatic testing on every heat exchanger tube batch, plus PMI (positive material identification) and chemical composition analysis to confirm the correct alloy was actually supplied — catching wall-thinning and material-grade mismatches before they reach a customer's pressure test.
packaging
PVC Wrapping
& End Caps
Custom Barcoding
& Labeling
Anti-Corrosion
& Moisture Protection
Seaworthy Wooden Cases & Pallets
Heat Exchanger Tube Factory & Inspection 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 heat exchanger pipe and tube by seamless or welded construction, diameter, wall thickness, requested length, grade, and annealed, polished, pickled, or custom finish.
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 heat exchanger tube deliveries to over 50 countries, PVC wrapping and end caps are paired with anti-corrosion and moisture protection to preserve tube ends and surfaces.
Frequently Asked Questions
What standards apply to stainless steel heat exchanger tubes?
Our heat exchanger tubes comply with ASTM A213 (seamless), ASTM A249 (welded), TEMA standards for shell-and-tube exchangers, EN 10216-5, and EN 10217-7. Available in grades TP304, TP304L, TP316, TP316L, TP321, TP347, and duplex 2205/2507.
What is the size range for heat exchanger tubes?
Standard heat exchanger tube ODs range from 6 mm to 101.6 mm with wall thickness 0.5 mm to 4 mm. U-bend tubes and custom straight lengths are manufactured to TEMA or customer exchanger drawings.
What types of heat exchanger tubes does TeCarve supply?
We supply straight tubes, U-bend tubes, and low-fin tubes for shell-and-tube heat exchangers, condensers, reboilers, and coolers. All tubes are hydrostatically tested; eddy-current NDT is available on request.
How do I choose between seamless and welded heat exchanger tubes?
Seamless tubes are preferred for high-pressure, high-temperature, or corrosive service where seam integrity is critical. Welded-and-drawn (W&D) tubes meet the same ASTM A249 standards and are a cost-effective alternative for the majority of heat exchanger applications.
What testing and documentation is provided with heat exchanger tubes?
Each batch is supplied with a full Mill Test Certificate (EN 10204 3.1) covering chemical analysis, mechanical properties, and heat number traceability. Hydrostatic, flaring, flattening, and eddy-current NDT reports are available per ASTM and TEMA requirements.