Yuhong Group Co.,Ltd
| Payment Terms | L/C,T/T，AT SIGHT |
| Supply Ability | According to Clients' requirements |
| Delivery Time | 45-75 Days (Depend on Customer's Requirement |
| Packaging Details | Ply-wooden Cases with Steel Frames(both ends of pipes have plastic caps） |
| Tube Specification: | ASME SA312, ASTM A312 |
| Tube Material: | TP321H |
| Fin Type | HFW Finned Tube/Solid Fin Tube |
| Fin Material Grade | Carbon Steel |
| Highlight | ASTM A312 TP321H fin tube, HFW solid fin tube, heat exchanger fin tube |
| Shape | Round |
| Application | Power Plant ,Air preheaters, Boiler |
| Brand Name | YUHONG |
| Certification | DNV, BV, PED, LR, ABS, TS, CCS |
| Place of Origin | China |
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Product Specification
| Payment Terms | L/C,T/T，AT SIGHT | Supply Ability | According to Clients' requirements |
| Delivery Time | 45-75 Days (Depend on Customer's Requirement | Packaging Details | Ply-wooden Cases with Steel Frames(both ends of pipes have plastic caps） |
| Tube Specification: | ASME SA312, ASTM A312 | Tube Material: | TP321H |
| Fin Type | HFW Finned Tube/Solid Fin Tube | Fin Material Grade | Carbon Steel |
| Highlight | ASTM A312 TP321H fin tube, HFW solid fin tube, heat exchanger fin tube | Shape | Round |
| Application | Power Plant ,Air preheaters, Boiler | Brand Name | YUHONG |
| Certification | DNV, BV, PED, LR, ABS, TS, CCS | Place of Origin | China |
| High Light | ASME SA312 TP321H fin tube ，high frequency welded heat exchanger tube ，stainless steel seamless finned pipe | ||
ASME SA312 TP321H High-Frequency Welded (HFW) Fin Tube
The ASME SA312 TP321H High-Frequency Welded (HFW) Fin Tube is a high-performance heat transfer component engineered for extreme industrial environments. It combines the superior high-temperature strength and corrosion resistance of ASME SA312 TP321H stainless steel with the exceptional thermal efficiency of integrally welded fins. This makes it a critical solution in demanding applications across power generation, petrochemical, and process heating industries.
321H is a high-carbon austenitic stainless steel grade: the "H" denotes high carbon content (0.04–0.10%), which enhances high-temperature strength.Key Alloying Element: Titanium (Ti). This is the crucial stabilizer that prevents chromium carbide precipitation during exposure to high temperatures (450-900°C / 842-1652°F), which causes sensitization and intergranular corrosion.
Chemical Composition(%)
| TP321H Chemical Composition(%) | ||||||
| Element | C | Si | Cr | Mn | Ni | Ti |
| Range | 0.04-0.10 | ≤0.75 | 17.00-19.00 | ≤2.00 | 9.00-123.00 | 4*C-0.7 |
Mechanical Properties
| ASME SA312 TP321H Mechanical Properties | |||
| Tensile Strength | Yield Strength | Hardness | Elongation |
| 515MPa | ≥205MPa | ≤ 192HB | ≥35% |
Equivalent Material of TP321H
| ASTM/AISI | UNS NO | EN | ISO | JIS | GOST |
| TP321H | UNS32109 | 1.4874 | X7CrNiTi18-10 | SUS 321H | 08Ch18N12T |
Advantages of HFW Fin Tubes:
1.Stronger Bond: Metallurgical fusion provides superior resistance to vibration, thermal cycling, and fin peeling.
2.Higher Efficiency: Eliminates air gaps and flux residues, boosting heat transfer by 5–15% over rolled or brazed tubes.
3.Material Flexibility: Welds dissimilar metals (e.g., stainless to carbon steel) without needing ductility or specific alloys.
4.Greater Durability: Withstands high temperatures (800–850°C) and pressure without braze softening or stress cracking.
5.Lower Lifetime Cost: High-speed production and a 2–3x longer service life reduce total cost of ownership.
Applications Of ASME SA312 TP321H High-Frequency Welded (HFW) Fin Tube
1.Power Generation: Boiler superheaters, reheaters, economizers, and air preheaters in coal-fired and combined-cycle plants.
2.Petrochemical & Refining: Heat exchangers in catalytic reforming, hydrocracking, and ethylene pyrolysis furnaces; charge gas coolers.
3.Industrial Furnaces: Convection sections, radiant tubes, and waste heat recovery units in chemical, steel, and glass manufacturing.
4.Waste Heat Recovery Systems: Capturing and repurposing energy from high-temperature exhaust streams.
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Importer,Exporter,Trading Company,Seller,Other
Year Established:
2007
Total Annual:
50M-70M
Employee Number:
50~850
Ecer Certification：
Verified Supplier
Yuhong Group is one of the large scale group company in China, more than 35 years experience in the international market, providing high-quality services to over 3000 customers, end user which like Aramco, Petrobras, Pemex, Petronas, Ecopetro, Petroecuador, …. till now Yuhong Grou... Yuhong Group is one of the large scale group company in China, more than 35 years experience in the international market, providing high-quality services to over 3000 customers, end user which like Aramco, Petrobras, Pemex, Petronas, Ecopetro, Petroecuador, …. till now Yuhong Grou...
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