ASTM A335 P11 Serrated Fin Tube for Air Preheaters and Furnances

ASTM A335 P11 Base Tube Composition

ASTM A335 P11 Serrated Fin Tube Application

1. Power Generation

• Boilers: Used in water walls, economizers, and steam drums for efficient heat exchange.
• Superheaters/Reheaters: Transfers heat to steam while withstanding temperatures up to 580°C (1,076°F).
• Heat Recovery Systems: Captures waste heat from exhaust gases in combined-cycle plants.

2. Petrochemical & Refining

• Catalytic Reforming Units: Facilitates heat transfer in reactors and furnaces.
• Crude Oil Heaters: Preheats crude oil before distillation.
• Hydrogenation Reactors: Manages heat in high-pressure hydrogen environments.

3. Chemical Processing

• Process Heaters: Heats chemicals in reactors or distillation columns.
• Sulfur Recovery Units (SRUs): Used in Claus process heat exchangers.
• Ethylene Crackers: Handles heat in pyrolysis furnaces.

4. Industrial Heating Systems

• Thermal Oil Heaters: Transfers heat in systems using synthetic or mineral oils.
• Air Preheaters: Improves boiler efficiency by preheating combustion air.
• Furnace Convection Sections: Enhances heat recovery in industrial furnaces.

5. Oil & Gas

• Gas Processing Plants: Cools natural gas streams.
• Refinery Heaters: Used in fired heaters and reformers.
• Coker Units: Manages heat in delayed coking processes.

ASTM A335 P11 Serrated Fin Tube Strength

1. Mechanical Properties

• Tensile Strength: ≥415 MPa (60,000 psi).
• Yield Strength: ≥205 MPa (30,000 psi).
• Elongation: ≥30% (in 50 mm).
• Hardness: ≤197 HBW (Brinell Hardness).

2. Moderate High-Temperature Performance: Suitable for up to 580°C (1,076°F).

3. Cost-Effective: More economical than higher-grade alloys (e.g., P9, P91).

4. Improved Heat Transfer: Serrated fins boost efficiency by 15–30% over plain fins.

5. Weldability: Easier to weld than high-chromium steels (no stringent pre/post-weld heat treatment required).

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.