ASTM A213 T22 High Frequency Welded Serrated Fin Tube For HVAC Systems

1. What is ASTM A213 T22 Serrated Fin Tube?

ASTM A213 T22 Serrated Fin Tube is a high-efficiency heat transfer solution engineered for extreme ash-laden and high-temperature environments. It features a seamless chromium-molybdenum alloy steel base tube (ASTM A213 T22, UNS K21590) with helically wound serrated carbon steel fins bonded via high-frequency welding (HFW). The serrated fin edges disrupt boundary layers, enhancing heat transfer by 35% while reducing ash fouling by 50% compared to smooth fins. Ideal for boiler superheaters, reformers, and waste heat recovery systems operating up to 590°C (1,094°F).

2. Chemical & Mechanical Properties

Chemical Composition (%)

Mechanical Properties (Post-Weld HT)

3. Key Applications & Competitive Advantages

● Coal-Fired Boilers: Superheaters in 550°C+ units (resists >60g/Nm³ fly ash).

● Waste Incinerators: Convection sections for municipal solid waste (MSW) plants.

● Refinery Heaters: Vacuum residue upgrading units (sulfidation resistance per NACE RP0472).

● Biomass Energy: High-alkali flue gas economizers.

● Cement Plants: Preheater exhaust gas recovery.

4.Why choose ASTM A213 T22 Studded Fin 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:
● Anti-Fouling Design: 50% lower ash buildup vs. smooth fins (EPRI AC-7891).
● 8-Year Lifespan: Withstands thermal cycling per ASME Sec. I.
● Cost Saving: 40% lower cost vs. TP347H finned tubes.
● Rapid Delivery: 80+ standard sizes (OD 25–152mm) in stock.

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.   The factories already got certificates like : ABS, LR, DNV-GL, BV, KR, CCS, ASME, ISO 9001, ISO14001, ISO18001, ect.

Our factories main products as below : 
Factory 1th: Stainless steel seamless tube, Duplex steel seamless tube, Super duplex steel seamless tube, Nickel alloy steel seamless tube;

Factory 2th: Carbon steel seamless tube, Alloy steel seamless tube; Enhanced Heat Tranfer Tube, low fin tube ,U bending workshop;
Factory 3th: High frequency welding fin tube(HFW fin tube, Solid Fin tube, Studded Tube, Serrated Fin tube, Longitudinal welding fin tube), Wound fin tube(L type fin tube, LL type fin tube,  KL type fin tube), Embedded G type fin tube , Extruded fin tube,  low fin tube, U bend & 180deg. Return;

Yuhong Holding Group also has gained rich experience for project package( products contain:Pipes, Fittings, Flanges, heat exchanger, furnace, fired heater, air cooler, boiler) , YUHONG brand has marked its global presence in more than 85 countries, like, Korea, USA, Canada, Mexico, Colombia, Bolivia, Chile, Argentina, Brazil, Ecuador, Austria, New Zealand, Singapore, Malasyia, Indonesia, Thailand, Vietnam, Ukraine, Turkey,Sauid Arabia, Qatar, U.A.E,Israel,India, UK, France, Italy, Gernmany, Poland, Spain,... We have successfully implemented the orders of Cross Country Pipelines for our valuable customers. In addition, we have also developed a huge network of contacts and strategic alliances with most important manufacturers as stockists around the world.