ASTM A312 TP304 Stainless Steel Studded Fin Tube For HVAC Systems
1. What is ASTM A312 TP304 Studded Fin Tube?
ASTM A312 TP304 Studded Fin Tube is a high-efficiency heat transfer solution engineered for fouling-prone and corrosive environments. It consists of a seamless austenitic stainless steel base tube (ASTM A312 TP304) with carbon steel stud-type fins resistance-welded perpendicularly to the surface. This robust design maximizes heat transfer surface area while preventing ash buildup, delivering superior corrosion resistance and 50% higher thermal efficiency than bare tubes in waste incinerators, boilers, and high-dust flue gas applications up to 760°C (1,400°F).
1. Chemical & Mechanical Properties
Dimensional Specifications:
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Bare Tube Diameter:25-219mm |
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Fin Height:: 5-35mm |
Fin Thickness: Φ5-20 mm |
Fin Pitch: 8-30mm |
Tube Ends: Plain Ends / Beveled Ends |
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No Fin Area (Both Ends): As Customer’s Request and Drawing |
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Chemical Composition (%):
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Element |
C |
Si |
Mn |
P |
S |
Cr |
Ni |
Others |
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Range |
≤0.08 |
≤0.75 |
≤2.00 |
≤0.045 |
≤0.030 |
18.0~20.0 |
8.0~11.0 |
Balance (Fe) |
Mechanical Properties:
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Tensile Strength: Rm (MPa) |
Yield Strength: Rp 0.2 (MPa) |
Elongation: A (%) |
Hardness(HB) |
Stud Bond Strength(MPa) |
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≥515 |
≥205 |
≥35 |
≤192 |
> 120 |
3. Key Applications & Competitive Advantages
· Waste Incinerators: Boiler tubes for municipal solid waste (MSW) plants.
· Biomass Boilers: Superheaters handling high-alkali flue gas.
· Cement Plants: Preheater exhaust gas economizers.
· Coal-Fired Power: Air preheaters with >30g/Nm³ dust loading.
· Chemical Processing: Sulfuric acid concentration heaters.
4. Why Choose ASME A312 TP304 Studded Fin Type:
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:
· Anti-Fouling Design: 60% lower ash buildup vs. helical fins (EPRI Field Data).
· Corrosion Resistance: Withstands chloride/alkali attacks per ASTM G48.
· Cost Efficiency: Carbon steel studs reduce cost by 35% vs. stainless steel.
· Rapid Delivery: 80+ standard sizes in stock (OD 25.4–152.4mm).
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