High Frequency Welded Serrated Finned Tube TP304H Base / SS304 Fin
Price:
Negotiable
MOQ:
10PCS
Delivery Time:
Depends on quantity
Brand:
YUHONG
Product 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
- Surface Preparation: Vapor degreasing + Abrasive blasting (Sa 2.5)
- Fin Winding: CNC-controlled tension @ 300-500 N/mm²
- Welding: 400 kHz HF current creates metallurgical bond
- Serration: Laser-cut discontinuous edges (Depth: 2-3mm, Pitch: 5-8mm)
- 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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Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
Yuhong Group Co.,Ltd
Location
20TH FLOOR,NO.1 NEW WORLD BUILDING ,NO.1018 MINAN ROAD,YINZHOU DISTRICT, NINGBO CITY, ZHEJIANG PROVINCE, CHINA
Contact Person
Jikin Cai