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ASTM A179 High-Frequency Welded Finned Tubes for Boiler Economizers
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Super Duplex Stainless Steel Heat Exchanger Tube

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ASTM A179 High-Frequency Welded Finned Tubes for Boiler Economizers
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  • name

ASTM A179 High-Frequency Welded Finned Tubes for Boiler Economizers

Brand Name: YUHONG
Model Number: N/A
MOQ: 500kgs
Price: To be discussed
Packaging Details: Iron frame wooden case
Payment Terms: T/T,L/C
Detail Information
Product Description
Detail Information
Place of Origin:
China
Certification:
ISO9001:2015; ISO14001:2015; ISO45001:2018; PED 2014/68/EU; WPS/PQR/WPQ; ISO 3834
Product:
Solid Fin Tube
Material:
ASTM A179
Application:
Boiler Economizers, Industrial Steam Boilers, Power Generation Boilers, Waste Heat Recovery Boilers, Oil & Gas And Petrochemical Plants
Base Tube O.D.:
19.05–50.8 Mm
Fin Height:
10–25.4 Mm
Fin Thickness:
0.8–2.0 Mm
Fin Pitch:
2–6 Fins Per Inch
Package:
Iron Frame Wooden Case
Supply Ability:
5000 meters/day
Product Description
1. Product Overview

ASTM A179 high-frequency welded finned tubes are designed for boiler economizers and industrial heat recovery systems. Manufactured with seamless cold-drawn low-carbon steel base tubes and continuously welded helical steel fins, these tubes provide an enlarged external heat-transfer surface for recovering energy from boiler flue gas.

The high-frequency resistance welding process creates a continuous metallurgical bond between the fin strip and base tube, helping maintain fin attachment under normal operating conditions and thermal cycling. By improving gas-side heat transfer, these tubes help preheat boiler feedwater, reduce exhaust heat loss and improve overall boiler efficiency.


2. Applications

  • Boiler Economizers: Recover heat from exhaust gas to preheat boiler feedwater.

  • Industrial Steam Boilers: Improve thermal efficiency in package boilers and industrial steam-generation systems.

  • Power Generation Boilers: Support heat recovery in suitable boiler convection sections.

  • Waste Heat Recovery Boilers: Capture residual heat from industrial exhaust gas streams.

  • Oil & Gas and Petrochemical Plants: Used in boiler systems and process heat recovery units where the material is compatible with the operating environment.

3. Chemical Composition & Mechanical Properties

Chemical Composition of ASTM A179 Base Tube

Element

Composition (%)

Carbon (C)

0.06–0.18

Manganese (Mn)

0.27–0.63

Phosphorus (P)

≤ 0.035

Sulfur (S)

≤ 0.035

Mechanical Properties

Property

Requirement

Tensile Strength

≥ 325 MPa

Yield Strength

≥ 180 MPa

Elongation

≥ 35%

Key Product Advantages

  • Enhanced Heat Transfer: Extended fin surfaces increase the effective heat-transfer area on the gas side.

  • Strong Fin Attachment: Continuous high-frequency welding creates a metallurgical bond between the fin and base tube.

  • Improved Energy Recovery: Supports flue-gas heat recovery and boiler feedwater preheating.

  • Reliable Operation: Properly selected fin dimensions and materials help withstand normal thermal cycling and operating conditions.

  • Flexible Configuration: Tube diameter, fin height, fin pitch, fin thickness and tube length can be customized to meet project requirements.

Tags: 

Welded Fin Tube A240  

Welding Fin Tube 3.0mm  

Welding Fin Tube High Frequency

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