Spiral Welded Finned Tubes with A106 Base Pipe CS Fins for Heat Exchangers
Price:
Negotiable
MOQ:
10PCS
Delivery Time:
Depends on quantity
Brand:
YUHONG
Product Description
High-Frequency Welded Finned Tubes: ASTM A106 Carbon Steel Base Tube + Carbon Steel (CS) Fins
1. Product Overview
High-frequency welded (HFW) finned tubes combine ASTM A106 Gr.B seamless carbon steel
base tubes with carbon steel fins using advanced solid-state welding technology. These tubes
deliver 8-10x higher heat transfer efficiency versus bare pipes, ideal for heat recovery systems,
boilers, and process heaters operating at ≤400°C.
2. Fin Tube Structure & Manufacturing Process
| Component | Material | Key Process |
|---|---|---|
| Base Tube | ASTM A106 Gr.B | Seamless cold-drawn, OD 25.4-114.3mm |
| Fins | Carbon Steel (CS) | High-frequency welding (2,000 Hz), no filler |
| Bond Quality | Metallurgical fusion | 100% ultrasonic tested, shear strength ≥35MPa |
3. Chemical Composition (ASTM Standards)
Base Tube (A106 Gr.B):
| Element | C | Mn | P (max) | S (max) | Si |
|---|---|---|---|---|---|
| % | ≤0.30 | 0.29-1.06 | 0.035 | 0.035 | ≥0.10 |
Fins (Carbon Steel SPHC):
| Element | C (max) | Mn (max) | P (max) | S (max) | Al (min) |
|---|---|---|---|---|---|
| % | 0.12 | 0.50 | 0.040 | 0.040 | 0.020 |
4. Critical Dimensions & Tolerances
| Parameter | Range/Tolerance | Standard |
|---|---|---|
| Base Tube OD | 25.4 - 219 mm (±0.15mm) | ASTM A106 |
| Fin Height (H) | 5 - 30 mm (±0.5mm) | HEI Standards |
| Fin Thickness (T) | 0.8 - 3.0 mm (±0.1mm) | Custom |
| Fin Pitch | 4-25 (±0.2) | ASME B36.10M |
| Max Length | 24 meters (straightness ≤1mm/m) | Custom |
5. Performance Advantages
- ✅ Heat Transfer Coefficient: 45-65 W/m²K (vs. 5-8 W/m²K for bare tubes)
- ✅ Corrosion Resistance: Zinc/aluminized coating optional for acidic environments
- ✅ Pressure Rating: Up to 15 MPa at 350°C (ASME B31.1 compliant)
- ✅ Thermal Fatigue Life: >10,000 cycles (per ASTM E606)
6. Application-Specific Solutions
| Industry | Use Case | Tube Configuration Example |
|---|---|---|
| Power Plants | Economizers, Air Preheaters | OD 50.8mm + 16mm fins @ 197 FPM |
| Petrochemical | Process Gas Heaters, Reactors | OD 76.2mm + 19mm fins @ 230 FPM |
| HVAC | Thermal Fluid Heaters, Dehumidifiers | OD 38.1mm + 12.7mm fins @ 180 FPM |
| Waste Heat Recovery | Exhaust Gas Boilers (≤550°C) | Aluminized coating + 25.4mm fins |
7. Why Choose Our HFW Finned Tubes?
- 15+ Years Expertise: 200+ projects across 30 countries
- Certifications: ISO 9001, ASME Section VIII, PED 2014/68/EU
- Custom Engineering: Fin density/traverse speed optimized per fluid dynamics
- Quality Assurance:
- Eddy current testing on base tubes
- 3D laser measurement for fin geometry
- Hydrostatic testing at 1.5x design pressure
8. Technical Support & Delivery
- Design Assistance: CFD simulation for optimal fin arrangement
- Lead Time: 25-35 days for standard sizes (MOQ: 500 meters)
- Packaging: VCI-coated, wooden crates for ocean freight
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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