ASTM A213 TP316L High-Frequency Welded Finned Tubes for Air-Cooled Heat Exchangers

ASTM A213 TP316L High-Frequency Welded Finned Tubes are designed for air-cooled heat exchangers in chemical, petrochemical, and industrial process cooling applications. Manufactured with TP316L stainless steel base tubes and continuously welded external fins, they increase the heat transfer surface area to improve air-side heat exchange efficiency.

TP316L offers good corrosion resistance and weldability, making these finned tubes suitable for demanding operating environments where material durability is essential. The welded fin structure provides reliable thermal contact between the fins and base tube. Tube dimensions, fin geometry, and material combinations can be customized according to project specifications.

• Air-Cooled Heat Exchangers: Increase air-side heat transfer area for efficient process cooling.

• Chemical & Petrochemical Plants: Support heat exchange duties where corrosion-resistant materials are required.

• Industrial Process Cooling: Help improve heat dissipation and equipment thermal performance.

• Heat Recovery Systems: Serve in compatible air-cooled heat recovery applications, subject to operating conditions and design requirements.

Material selection should be verified against the actual process fluid, temperature, and corrosion conditions.

• Increased heat transfer area: External fins improve the available surface area for air-side heat exchange.

• Welded fin attachment: Continuous high-frequency welding provides a metallurgical bond between the fin and base tube.

• Corrosion-resistant base material: TP316L is suitable for many industrial environments requiring improved corrosion resistance.

• Project-specific configuration: Tube dimensions, fin geometry, spacing, and length can be tailored to approved engineering requirements.

• Inspection and traceability: Material certificates, dimensional records, and agreed welding inspection documentation can support project quality requirements.

• Equipment integration: Manufactured dimensions and tolerances can be coordinated with the customer's air-cooled heat exchanger design.

  Typical Chemical Composition Requirements

  Element	ASTM A213 TP316L, wt.%
  Carbon (C)	0.035 max.
  Manganese (Mn)	2.00 max.
  Phosphorus (P)	0.045 max.
  Sulfur (S)	0.030 max.
  Silicon (Si)	1.00 max.
  Chromium (Cr)	16.0–18.0
  Nickel (Ni)	10.0–14.0
  Molybdenum (Mo)	2.00–3.00
  Nitrogen (N)	0.10 max.

  Values shown are typical specification limits for TP316L and should be checked against the applicable edition of ASTM A213 and the material certificate for the supplied product.

  Typical Mechanical Property Requirements

  Property	Typical Minimum Requirement
  Tensile Strength	485 MPa
  Yield Strength, 0.2% offset	170 MPa
  Elongation in 50 mm	35%

  Mechanical property requirements depend on the applicable standard edition, specimen orientation, and test conditions. Actual test results should be taken from the material test certificate (MTC).