LL Finned Tube,Overlapped L Type Fin Tube,Wound Finned Tubes-Fin Tube Manufacturer

Fin Type: LL Finned Tube,Overlapped L Type Fin Tube
Base Tube materials: Any material available, such as Carbon steel Tube, A179, A192, A210, stainless tube A269/A213 T5 T11 T22 304 316
Fin Material: Copper, Aluminum
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Description

LL-Foot Fin Tube– Overlapped L type fin tube is commonly known as double L or overlapped L fin, are used in applications where temperatures do not exceed about 350 degrees Fahrenheit The fins are manufactured from strip in similar to the L type except that the foot is preformed into an accurately controlled stepped double L shape, rolled into a taper which causes it to curl. LL-Foot Fin – Overlapped L is then continuously helically wound under tension onto a tube. The fin hugs the tube with one fin overlapping the foot of the next fin with complete coverage of the base tube. This gives good corrosion protection to the tube. This type of tube is often used as an alternative to the more expensive extruded type fin in corrosive environments. The fins are secured at each end in a similar way as L fin.

LL FIN (OR OVERLAPPED FIN)

Fin foot is pre-formed into an LL shape (overlapped LL) and applied to base tube under tension. However, foot is pre-shaped to give overlap of one foot onto another, thereby improving base tube protection and thermal contact area Fin materials: Aluminum Base tube materials: Any metallic material. The smooth flat fins perpendicular to the tube surface give rise to very low resistance to air /gas flow and ensure that fouling is kept to a minimum. The foot of the fin is in contact with base tube and provides a complete sheathing over the finned length.

The Overlapped “L” fin design has interlocking fins that are wound together to prevent movement and separation. The fin protects the entire tubes, so the designation works well for the applications where corrosion is a factor.This type of finned tube is often used as an alternative to the more expensive extruded type fin in corrosive environments.
Common Applications: Steam Coils, Air Pre-heaters.
Max. Working Temperature: 180 °C
Atmospheric Corrosion Resistance: OK
Mechanical Resistance: Poor
Fin Material: Copper, Aluminum
Base Tube materials: Any material available, such as Carbon steel Tube, A179, A192, A210, stainless tube A269/A213 T5 T11 T22 304 316

In order to forward you a promt offer we would be pleased to receive you detailed enquiry including:
• Base tube material
• Base tube size (OD x WT x Length)
• Fin material
• Fin type
• Fin diameter or height
• Fin thickness
• Fins per inch, meter or fin pitch
• Lenght of plain, unfinned ends
• Finned Tube Quantity

(Additional fabrication, such as bend or weld the tubes into tubeplate or assembly)

Company

Cangzhou Datang Steel Pipe Co., Ltd located in Cangzhou City,the hometown of pipelines, is a collection of research and development, production, sales in one of the enterprises. The company was founded in 2007 with registered capital 10.08 million RMB, and through the IS09001 international quality system certification, we has high frequency resistance welding finned tube production line 18, extruded finned tube equipment 30, laser welding finned tube production line 2, wound finned tube production line 12. The annual capacity can reach 100,000 tons, the specification φ 18-273mm finned tube, according to the customer requirements of the standard production, service has exceeded 3000+ enterprises.

Our companys tenet is to be Chinas most professional pipeline and equipment suppliers, on the basis of seamless steel tube, integrate the national high quality pipe equipment resources, provide one-stop packaging services,quality makes customer trust, service makes customer relieved, result makes customer comfort, building a conscience, good-hearted, have the sense of responsibility, contributes to the society of the enterprise.Our slogan is professional concentrate in pipeline & accessories 20 years.