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High Frequency Welded Serrated Finned Tube TP304H Base / SS304 Fin
High Frequency Welded Serrated Finned Tube TP304H Base / SS304 Fin
High Frequency Welded Serrated Finned Tube TP304H Base / SS304 Fin
High Frequency Welded Serrated Finned Tube TP304H Base / SS304 Fin
High Frequency Welded Serrated Finned Tube TP304H Base / SS304 Fin
High Frequency Welded Serrated Finned Tube TP304H Base / SS304 Fin
High Frequency Welded Serrated Finned Tube TP304H Base / SS304 Fin
High Frequency Welded Serrated Finned Tube TP304H Base / SS304 Fin
Specifications
Brand Name :
YUHONG
Model Number :
Serrated Finned Tube
Certification :
ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008
Place of Origin :
CHINA
MOQ :
10PCS
Price :
Negotiable
Payment Terms :
L/C,T/T
Supply Ability :
1000 tons per month
Delivery Time :
Depends on quantity
Packaging Details :
IRON FRAME WOODEN CASE
Fin Type :
HFW Serrated
Base Tube Material :
ASTM TP304H
Fin Material :
SS304 / UNS S30400
Welding Technology :
High-Frequency Welding
Fin Density (Fins/inch) :
5-15 (Customizable)
Application Industry :
Boilers, Waste Heat Recovery
Description

HIGH-FREQUENCY WELDED SERRATED FINS: THE ULTIMATE HEAT TRANSFER ACCELERATOR

Base Tube: TP304H ASTM A213 | Fins: SS304 ASTM A167

Superior Material Synergy

Engineered for Extreme Thermal Efficiency & Corrosion Resistance


Our bimetallic finned tubes leverage the synergistic properties of:

  • Base Tube: TP304H Austenitic Stainless Steel (High-Temperature Grade)

  • Fins: SS304 Stainless Steel with Serrated Edge Design

Chemical Composition (ASTM Verified)

Component TP304H Base Tube (%) SS304 Fins (%)
Carbon 0.04-0.10 ≤0.08
Chromium 18.0-20.0 18.0-20.0
Nickel 8.0-11.0 8.0-11.0
Manganese ≤2.00 ≤2.00
Silicon ≤1.00 ≤1.00
Phosphorus ≤0.045 ≤0.045
Sulfur ≤0.030 ≤0.030

Precision Manufacturing Process

High-Frequency Resistance Welding (HFRW) Technology

  1. Surface Preparation: Vapor degreasing + Abrasive blasting (Sa 2.5)
  3. Fin Winding: CNC-controlled tension @ 300-500 N/mm²
  5. Welding: 400 kHz HF current creates metallurgical bond
  7. Serration: Laser-cut discontinuous edges (Depth: 2-3mm, Pitch: 5-8mm)
  9. Annealing: 1050°C solution treatment + rapid quenching

Bond Strength: >50 MPa (Per ASME Section IX)


Fin Adhesion: 100% visual inspection & shear tested

Dimensional Tolerance Excellence

ASME B36.19 Compliant

Parameter Tolerance Range
Base Tube OD ±0.10 mm (6.35-38.1 mm)
Fin Height ±0.20 mm (12-25 mm)
Fins per Inch (FPI) ±1 fin (4-12 FPI)
Fin Thickness ±0.05 mm (0.3-1.2 mm)
Straightness ≤1.5 mm/m length

Critical Application Domains

Where Our Tubes Excel

Industry Equipment Temp Range
Power Generation HRSG Economizers/Superheaters 400-650°C
Petrochemical Cracked Gas Heat Exchangers 300-550°C
Waste Incineration Flue Gas Condensers 200-450°C
Marine Exhaust Gas Boilers 250-500°C
HVAC Industrial Dehumidifiers -40 to 120°C

Competitive Advantages

Why Global Leaders Choose Us

  • Thermal Performance: 45-65% higher HTC vs. smooth tubes (Per TEMA standards)
  • Fouling Resistance: Serration disrupts boundary layer - 30% longer run cycles
  • Corrosion Safety: Passivated surface (ASTM A380 compliant)
  • Pressure Rating: 35 MPa @ 600°C (TP304H proof strength)
  • Certifications: ISO 9001, PED 2014/68/EU, ASME Section VIII Div.1
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High Frequency Welded Serrated Finned Tube TP304H Base / SS304 Fin

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Product Detail
Brand Name :
YUHONG
Model Number :
Serrated Finned Tube
Certification :
ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008
Place of Origin :
CHINA
MOQ :
10PCS
Price :
Negotiable
Contact Supplier
High Frequency Welded Serrated Finned Tube TP304H Base / SS304 Fin
High Frequency Welded Serrated Finned Tube TP304H Base / SS304 Fin
High Frequency Welded Serrated Finned Tube TP304H Base / SS304 Fin
High Frequency Welded Serrated Finned Tube TP304H Base / SS304 Fin

Yuhong Group Co.,Ltd

Verified Supplier
14 Years
zhejiang, ningbo
Since 2007
Business Type :
Manufacturer, Distributor/Wholesaler, Importer, Exporter, Trading Company, Seller, Other
Main Products :
Stainless Steel Seamless Pipe, Stainless Steel Seamless Tube, Duplex Stainless Steel Pipe
Total Annual :
50M-70M
Employee Number :
50~850
Certification Level :
Verified Supplier
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