CS Embedded Fins on A179 Tubes For Boilers Heat Exchangers & Air Preheaters
Price:
Negotiable
MOQ:
10PCS
Delivery Time:
Depends on quantity
Brand:
YUHONG
Product Description
Embedded Finned Tubes - ASTM A179 Carbon Steel Base Tube with Carbon Steel Fins
1. Product Introduction: Embedded Finned Tubes
Embedded finned tubes combine an ASTM A179 seamless carbon steel base tube with carbon steel fins using a pressure-embedding process. This design increases surface area by 8–12x versus bare tubes, enhancing heat transfer efficiency by 40–60% in applications like boilers, air preheaters, and thermal oil systems. Our tubes operate at temperatures up to 450°C and pressures ≤6.5 MPa.
2. Structure & Manufacturing Process
| Component | Material | Embedding Process |
|---|---|---|
| Base Tube | ASTM A179 Carbon Steel | High-pressure rollers embed fins into helical grooves cut into the base tube. |
| Fins | Carbon Steel (CS) | Fins are cold-worked into grooves, creating a metallurgical bond with zero contact resistance. |
| Bond Integrity | — | Tensile strength >50 MPa (tested per ASTM E8/E8M). |
3. Material Chemical Composition (ASTM Standards)
Base Tube (ASTM A179):
| Element | C (%) | Mn (%) | P (%) max | S (%) max | Si (%) |
|---|---|---|---|---|---|
| Content | 0.06–0.18 | 0.27–0.63 | 0.035 | 0.035 | 0.10–0.50 |
Fins (Carbon Steel):
| Element | C (%) | Mn (%) | P (%) max | S (%) max | Fe (%) |
|---|---|---|---|---|---|
| Content | ≤0.25 | 0.30–0.90 | 0.040 | 0.040 | Balance |
4. Dimensional Tolerances
| Parameter | Tolerance |
|---|---|
| Base Tube OD | ±0.15 mm (e.g., 25.4 mm, 31.8 mm) |
| Fin Height | ±0.20 mm (Typ: 12.7–15.9 mm) |
| Fin Density | ±1 fin/meter (Range: 157–472 fins/m) |
| Length | +3 mm / -0 mm (Max: 18 meters) |
5. Performance Advantages
- Corrosion Resistance: CS fins protect base tubes in flue gas (SO₂ ≤ 500 ppm) and humid environments.
- Thermal Efficiency: Fin-to-tube bond eliminates air gaps, achieving thermal conductivity of 45–50 W/m·K.
- Mechanical Durability: Withstands 30+ years of thermal cycling; fin pull-off force >60 N/mm.
- Fouling Resistance: Helical fin design reduces ash/sediment buildup by 35% vs. spiral fins.
6. Application Areas
- Energy & Power: Boilers (waste heat recovery), air preheaters, economizers.
- Petrochemical: Thermal oil heaters, reformers, hydrogen plants.
- HVAC: Industrial air dryers, heat recovery ventilators.
- Marine: Exhaust gas boilers, fuel oil heaters.
7. Why Choose Our Finned Tubes?
- 25+ Years of Expertise: 500+ projects delivered globally (EU, MENA, ASEAN).
- Certified Quality: ISO 9001, ASME Section II compliance; hydrostatic tested at 1.5x design pressure.
- Custom Solutions: Tailor fin density, tube length, and alloy combinations (e.g., SS304 fins for corrosive media).
- Lifetime Support: Technical consultancy + non-destructive testing (NDT) reports provided.
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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