ASTM A335 P9 Serrated Fin Tube For Fired Heater And Boiler Reheater

ASTM A335 P9 Base Tube Composition

ASTM A335 P9 Serrated Fin Tube Strength

1. Material Strength Properties

• Tensile strength at room temp: min 415 MPa
• Yield strength at room temp: min 205 MPa
• Elongation: min 30%
• Hardness: max around 179 HB
• High-temperature properties: allowable stresses varying with temperature, creep rupture strength.

2. Versatility

• Wide Range of Applications: ASTM A335 P9 serrated fin tubes are used in various industries, including power generation, petrochemical, refining, and heat recovery systems.
• Customizable Design: The tubes can be customized in terms of base tube dimensions, fin height, fin density, and serration pattern to meet specific application requirements.

3. Cost-Effectiveness

• Long Service Life: The durability and resistance to high-temperature degradation reduce the need for frequent replacements, lowering long-term costs.
• Energy Efficiency: The enhanced heat transfer efficiency of serrated fin tubes can lead to energy savings in heat exchange systems.

4. Compliance with Industry Standards

• ASTM and ASME Standards: ASTM A335 P9 tubes comply with industry standards such as ASTM A335 and ASME SA335, ensuring high quality and reliability.
• Certifications: These tubes are often tested and certified for mechanical properties, hydrostatic performance, and non-destructive testing (NDT), providing assurance of their performance.

5. Improved Thermal Performance

• Higher Heat Transfer Coefficients: The serrated fin design results in higher heat transfer coefficients compared to smooth or plain fin tubes.
• Efficient Thermal Cycling: The tubes perform well under thermal cycling conditions, making them suitable for applications with fluctuating temperatures.

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.