YUHONG HOLDING GROUP CO., LTD
| HFW Finned Tubes Use | Waste‑Heat Recovery |
| HFW Finned Tubes Standard And Material | Stainless Steel ASTM A269 TP321 |
| Delivery Time | 30-45 days |
| HFW Finned Tubes Length | According to clients' need |
| Payment Terms | TT, LC |
| Finned Tube Type | High Frequency Welding / Helical Solid |
| HFW Finned Tubes Size and details | According to clients' need |
| HFW Finned Tubes Fins Material | Carbon Steel |
| Supply Ability | 1000 tons/month |
| Product | Fin Tubes or Finned Tube |
| HFW Finned Tubes Packing | Ply-wooden Case With Iron Frame |
| Packaging Details | Ply-wooden Case With Iron Frame |
| Model Number | ASTM A269 TP321 |
| Certification | ABS, BV, DNV, CCS, LR |
| Brand Name | YUHONG |
| Place of Origin | China |
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Product Specification
| HFW Finned Tubes Use | Waste‑Heat Recovery | HFW Finned Tubes Standard And Material | Stainless Steel ASTM A269 TP321 |
| Delivery Time | 30-45 days | HFW Finned Tubes Length | According to clients' need |
| Payment Terms | TT, LC | Finned Tube Type | High Frequency Welding / Helical Solid |
| HFW Finned Tubes Size and details | According to clients' need | HFW Finned Tubes Fins Material | Carbon Steel |
| Supply Ability | 1000 tons/month | Product | Fin Tubes or Finned Tube |
| HFW Finned Tubes Packing | Ply-wooden Case With Iron Frame | Packaging Details | Ply-wooden Case With Iron Frame |
| Model Number | ASTM A269 TP321 | Certification | ABS, BV, DNV, CCS, LR |
| Brand Name | YUHONG | Place of Origin | China |
| High Light | ASTM A269 TP321 finned tubes ，high frequency welded fin tubes ，waste-heat recovery finned tubes | ||
ASTM A269 TP321 High Frequency Welded Finned Tubes for Waste‑Heat Recovery Field
ASTM A269 TP321 (UNS S32100) is a titanium-stabilized austenitic stainless steel tubing widely used as the base tube for high-frequency welded finned tubes. The ASTM A269 standard applies to seamless and welded austenitic stainless steel tubes intended for use in corrosion-resistant and high-temperature heat exchange applications. The addition of titanium stabilizes carbon, inhibiting the precipitation of chromium carbide during welding and high-temperature service, thereby effectively preventing intergranular sensitization.
The TP321 base tube is the pressure-bearing core component of high-frequency welded finned tubes; the fins are metallurgically bonded to the outer surface of the base tube via high-frequency resistance welding, while the process fluid flows through the interior of the base tube.
Chemical Composition (%) max S32100
| Grade | C | Mn | P | S | Si | Cr | Ni | N |
| TP321 | 0.08 | 2.00 | 0.045 | 0.03 | 1.00 | 17.0-19.0 | 9.0-12.0 | 0.10 |
The titanium content shall be not less than five times the carbon content and not more than 0.70%.
Mechanical Properties S32100
| Type | Heat Treating Temperature | Tensile Strength,min | Yield Strength (0.2%Offset,min) |
| Welded | 1900°F[1040°C] | 75ksi (515 MPa) | 30ksi (205 MPa) |
| SMLS ≤3/16" | 75ksi (515 MPa) | 30ksi (205 MPa) | |
| SMLS ≥3/16" | 70ksi (485 MPa) | 25ksi (170 MPa) |
Advantages ASTM A269 TP321 Solid Finned Tubes
Heat recovery equipment typically operates under complex conditions: high-temperature flue gas, frequent thermal cycles, temperature fluctuations, trace corrosive components in exhaust gas, and equipment start-up and shutdown stresses. ASTM A269 TP321 high-frequency welded finned tubes combine the material advantages of titanium-stabilized stainless steel with the structural benefits of high-frequency welding finning technology, demonstrating outstanding performance in heat recovery applications.
| Superior Resistance to Intergranular Sensitization for High‑Temperature Flue Gas Environment: TP321 contains titanium as stabilizing element, which binds carbon to form titanium carbide and prevents chromium carbide precipitation at grain boundaries.During high‑frequency fin welding and long‑term service at 427 °C‑816 °C, the base tube avoids intergranular corrosion risk. |
| Excellent Thermal Fatigue Performance for Cyclic Operating Conditions: TP321 contains titanium as stabilizing element, which binds carbon to form titanium carbide and prevents chromium carbide precipitation at grain boundaries.During high‑frequency fin welding and long‑term service at 427 °C‑816 °C, the base tube avoids intergranular corrosion risk. |
High‑frequency resistance welding realizes solid‑state metallurgical fusion between fin strip and ASTM A269 TP321 base tube, zero gap at joint interface.Very low thermal contact resistance, high heat transfer efficiency and stable heat exchange performance under long‑term high‑temperature operation, no thermal efficiency attenuation caused by interface loosening. |
| Good High‑Temperature Oxidation & Mild Corrosion Resistance for Industrial Exhaust Gas |
Applications
Waste heat recovery for boiler & thermal power units
Cogeneration & biomass‑fired boilers
Process air‑cooled heat exchangers
Furnace waste‑heat recovery units
Energy‑Saving & Waste‑Heat Recovery Field
Heavy‑duty industrial HVAC & process heating
Off‑shore & marine auxiliary heat‑exchange equipment
New‑energy process equipment
Company Details
Business Type:
Manufacturer,Importer,Exporter,Trading Company,Seller,Other
Year Established:
1990
Total Annual:
50M-70M
Employee Number:
50~800
Ecer Certification：
Verified Supplier
Yuhong Holding Group has more than 35 years experience for pipeline products, till now we have 3 big joint venture factories, the total production area more than 130000 square meters, and more than 600 workers with 106 production lines give our clients excellent supporting always. &n... Yuhong Holding Group has more than 35 years experience for pipeline products, till now we have 3 big joint venture factories, the total production area more than 130000 square meters, and more than 600 workers with 106 production lines give our clients excellent supporting always. &n...
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