ASTM A335 P5 Alloy Steel Studded Tube for Furnance and Air Cooler

A335 P5 Studded Fin Tube Making Process

The general manufacturing process involves:

Base Tube Preparation: An A335 P5 tube is cut and cleaned.

Stud Welding: Individual studs are welded onto the tube's exterior in a predetermined pattern. This is typically an automated process using specialized stud welding equipment.

Heat Treatment (if required): The tube may undergo post-weld heat treatment to relieve stresses, depending on the application requirements.

Inspection & Testing: The finished tube is inspected and tested, which may include hydrostatic tests or non-destructive examination.

A335 P5 Studded Fin Tube Advantages:

The combination of the A335 P5 material and the studded design offers specific advantages for demanding environments.

• Enhanced Heat Transfer: The studs significantly increase the external surface area, drastically improving heat transfer from the hot exterior to the fluid inside the tube.
• Robust Construction: The welded studs provide a very strong mechanical bond, making this design suitable for high-temperature, high-pressure, and abrasive environments.
• Refractory Anchoring: In furnace applications, the studs are excellent for anchoring and retaining refractory linings, which protect the tube and improve heat retention.

A335 P5 Studded Fin Tube Comparison with Other Grades

While a full comparison is beyond the search results' scope, A335 P5 occupies a middle ground in the Cr-Mo alloy family:

• It offers better corrosion resistance and high-temperature strength than low-chromium grades like P11 or P22.
• Compared to higher-grade steels like P91 (9% Chromium), P91 offers higher strength at elevated temperatures but may not be as cost-effective for all applications.

A335 P5 Studded Fin Tube Applications:
This tube is ideal for applications involving high temperatures and corrosive atmospheres, particularly in the petrochemical industry:

• Heater Tubes and Furnace Coils in refineries.
• Transfer Lines for high-temperature hydrocarbons.
• Components in Catalytic Cracking and Delayed Coking Units

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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.