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ASTM A269 TP321 High Frequency Welded Finned Tubes for Waste‑Heat Recovery Field
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ASTM A269 TP321 High Frequency Welded Finned Tubes for Waste‑Heat Recovery Field
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ASTM A269 TP321 High Frequency Welded Finned Tubes for Waste‑Heat Recovery Field

Brand Name: YuHong HFW Finned Tubes
Model Number: ASTM A269 TP321
MOQ: Depend
Price: Negotiable
Packaging Details: Ply-wooden Case With Iron Frame
Payment Terms: TT, LC
Detail Information
Product Description
Detail Information
Place of Origin:
China
Certification:
ABS, BV, DNV, CCS, LR
Product:
Fin Tubes Or Finned Tube
Finned Tube Type:
High Frequency Welding / Helical Solid Fin Tubes
HFW Finned Tubes Standard And Material:
Stainless Steel ASTM A269 TP321
HFW Finned Tubes Fins Material:
Carbon Steel
HFW Finned Tubes Size And Details:
According To Clients' Need
HFW Finned Tubes Length:
According To Clients' Need
HFW Finned Tubes Use:
Heat Exchanger / Boiler / Furnaces / Condensers / Evaporators, Etc
HFW Finned Tubes Packing:
Ply-wooden Case With Iron Frame
Supply Ability:
1000 tons/month
Product Description

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
 

GradeCMnPSSiCrNiN
TP3210.082.000.0450.031.0017.0-19.09.0-12.00.10

 

The titanium content shall be not less than five times the carbon content and not more than 0.70%.
 
Mechanical Properties S32100
 

TypeHeat Treating TemperatureTensile Strength,minYield Strength (0.2%Offset,min)
Welded1900°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)

 
ASTM A269 TP321 High Frequency Welded Finned Tubes for Waste‑Heat Recovery Field
 
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


ASTM A269 TP321 High Frequency Welded Finned Tubes for Waste‑Heat Recovery Field

Tags: 

Welded Fin Tube A240  

Welding Fin Tube 3.0mm  

Welding Fin Tube High Frequency

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