YUHONG HOLDING 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） |
| Bare Tube Diameter | 16-219MM |
| Bare Tube Specification&Material | ASME SA335 P9 |
| Fin Pitch | 3-25MM |
| Fin Height | 5-30MM |
| Fin Thick | 0.8-3MM |
| Application | Power Plant, Air preheaters, Boiler, Heat exchangers, Refrigeration And Air Conditioning Systems |
| Brand Name | YUHONG |
| Certification | ABS, BV, ISO, ASTM, SGS |
| 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） |
| Bare Tube Diameter | 16-219MM | Bare Tube Specification&Material | ASME SA335 P9 |
| Fin Pitch | 3-25MM | Fin Height | 5-30MM |
| Fin Thick | 0.8-3MM | Application | Power Plant, Air preheaters, Boiler, Heat exchangers, Refrigeration And Air Conditioning Systems |
| Brand Name | YUHONG | Certification | ABS, BV, ISO, ASTM, SGS |
| Place of Origin | China | ||
| High Light | SA335 Solid Finned Tube ，Alloy Steel Solid Finned Tube | ||
ASME SA335 P9 HFW Solid Finned Tube with Carbon Fin is a high-temperature solution engineered for sulfur-rich environments. It combines a seamless chromium-molybdenum alloy steel base tube (ASME SA335 P9) with helically wound solid carbon steel fins bonded via high-frequency welding (HFW). This robust design delivers exceptional resistance to sulfidation and oxidation up to 600°C (1,112°F), making it ideal for refinery heaters, coker units, and high-sulfur flue gas applications.
| Base Tube O.D:15.88–325 mm | |||
| Fin Height:: 6–50.8 mm | Fin Thickness: 0.8–3.0 mm | Fin Pitch: As Customer’s Request | Tube Ends: Plain Ends / Beveled Ends |
| No Fin Area (Both Ends): As Customer’s Request And Drawing | |||
Chemical Composition (%)
| SA335 P9 Base Tube Chemical Composition (%) | ||||||||
| Element | C | Mn | P | S | Si | Cr | Mo | Others |
| Range | ≤0.15 | 0.30~0.60 | ≤0.025 | ≤0.025 | 0.50~1.00 | 8.00~10.00 | 0.90~1.10 | Balance (Fe) |
| Property | SA335 P9 Base Tube | Carbon Steel Fin |
| Tensile Strength | ≥ 415 MPa | ≥ 400 MPa |
| Yield Strength | ≥ 205 MPa | ≥ 250 MPa |
| Elongation | ≥ 30% | ≥ 23% |
| Hardness | ≤ 179 HB | ≤ 150 HB |
| Max Service Temp. | 600°C (1,112°F) | 400°C (752°F) |
| Sulfidation Resistance | ★★★★★ (Per NACE RP0472) | ★★☆ |
3.Key Applications
· Refinery Heaters: Convection sections in crude/vacuum distillation units.
· Delayed Cokers: Transfer line exchangers handling 500°C+ vapors.
· Coal-Fired Plants: Economizers for high-sulfur flue gas (SO₂ > 3,000 ppm).
· Chemical Processing: Sulfuric acid regeneration heaters.
· Petrochemical: Hydrogen reformer effluent boilers.
4.Why Choose ASME SA335 P9 Alloy Steel HFW Solid Finned Tube :
A:Company Competitiveness:
Yuhong Holding Group has more than 35 years experience for steel pipe and tube , fin tube , main application for Petrochemical , Oil refinary, Furnace, heating, boiler, heat exchanger, air cooler,.., till now YUHONG brand products already exported more than 85 countries, which like UK, ITALY, SPAIN , USA, MEXICO , COLOMBIA , BRAZIL, SAUDI ARANBIA , OMAN, QATAR, U.A.E, KOREA, ...., YUHONG brand already won good reputation in the market.
B:Product Competitiveness:
· 5X Sulfidation Life: Outperforms carbon steel tubes per API RP939-C.
· Zero Fin Detachment: HFW ensures >120 MPa bond strength (AWS D17.1).
· Cost Efficiency: Carbon steel fins reduce cost by 40% vs. alloy fins.
· Rapid Delivery: 30% stock coverage for standard sizes (OD 19–102mm).
Company Details
Business Type:
Manufacturer,Importer,Exporter,Trading Company,Seller,Other
Year Established:
1990
Total Annual:
50M-70M
Employee Number:
50~800
Ecer Certification：
Verified Supplier
Yuhong Holding Group has more than 35 years experience for pipeline products, till now we have 3 big joint venture factories, the total production area more than 130000 square meters, and more than 600 workers with 106 production lines give our clients excellent supporting always. &n... Yuhong Holding Group has more than 35 years experience for pipeline products, till now we have 3 big joint venture factories, the total production area more than 130000 square meters, and more than 600 workers with 106 production lines give our clients excellent supporting always. &n...
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