Yuhong Holding Group Co.,LTD
| Place of Origin: | CHINA |
| Brand Name: | YUHONG |
| Certification: | ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008 |
| Model Number: | High-Frequency Welded (HFW) Serrated |
| Minimum Order Quantity: | 10PCS |
|---|---|
| Price: | Negotiable |
| Packaging Details: | IRON FRAME WOODEN CASE |
| Delivery Time: | Depends on quantity |
| Payment Terms: | L/C,T/T |
| Supply Ability: | 1000 tons per month |
| Base Tube Material: | ASTM A213 T22 Alloy Steel | In Material: | Carbon Steel (CS) |
|---|---|---|---|
| Fin Type: | High-Frequency Welded Serrated | Application: | Heat Exchanger, Boiler, Economizer, HRSG |
| Highlight: | Serrated finned tubes for HRSG,High frequency welded fin tubes,T22 base tube CS fins |
||
Our high-frequency welded serrated finned tubes combine T22 alloy steel base tubes with carbon steel (CS) fins for
unmatched thermal efficiency in extreme environments. The T22 base tube delivers superior high-temperature strength
(up to 550°C), while CS fins maximize heat dissipation through serrated edges that disrupt boundary layers. Ideal for
boilers, HRSGs, and waste-heat recovery systems.
Optimized for Corrosion Resistance and Thermal Conductivity
| Component | Material | C (max) | Mn | Si | Cr | Mo | P (max) | S (max) |
|---|---|---|---|---|---|---|---|---|
| Base Tube | T22 Alloy | 0.15% | 0.30–0.60% | ≤0.50% | 1.90–2.60% | 0.87–1.13% | 0.025% | 0.025% |
| Fins | Carbon Steel | 0.25% | 0.60% | ≤0.35% | – | – | 0.035% | 0.035% |
Notes: T22 resists oxidation in steam environments; CS fins enhance thermal conductivity (45–50 W/m·K).
Guaranteed Fit for Critical Applications
| Parameter | Tolerance | Standard |
|---|---|---|
| Base Tube OD | ±0.15 mm | ASTM A450 |
| Wall Thickness | +10% / -5% | EN 10204-3.1 |
| Fin Height | ±0.25 mm | Custom |
| Fin Density (FPI) | ±1 fin/inch | ASME PTC 30 |
| Straightness | ≤1.5 mm/m | ISO 9393 |
✅ 15+ Years Expertise: 500+ projects in power/petrochemical sectors.
✅ Zero-Gap Welding: High-frequency welding ensures >98% fin bond integrity (tested per ASTM E290).
✅ Quality Assurance: 100% eddy-current testing, hydrostatic pressure checks (60 bar min).
✅ Lead Time: 30 days for standard orders; 45 days for custom specs.
✅ Global Compliance: CE, PED, and ASME stamps available.
Contact Person: Freya
Tel: +8617276485535
Fax: 0086-574-88017980