DELLOK Extruded Embedded Fin Tube For Boiler
About us
Professional heat exchanger factory with 20 years of experience, providing you with one-stop heat transfer solutions to design different heat exchangers according to your purposes (metallurgy, food, petrochemical, pharmaceutical, beverage, wastewater, refrigeration, etc...)
Dellok Young is a professional manufacturer of various heat exchangers integrating R&D, design, production and sales. The heat exchangers produced are mainly used in petrochemical, electric power, papermaking, building heating, mining and other industries, such as air heaters, food industry plant protein powder, starch and other air heater spray drying systems.
The company now has a professional technical innovation team and professional after-sales personnel. The company's production plant covers an area of approximately 18,000 square meters, has multiple professional and advanced CNC and automated production equipment, and has obtained a number of professional certificates and patents.
The company has a professional foreign trade team and has trade cooperation with various regions. Some global partners conducted on-site inspections of the production plants and were very satisfied with the inspection results and established long-term strategic cooperative relationships with our company.
Poduct details
Product Description:
This fin type is formed from a bi-metallic tube consisting of an aluminium outer tube and an inner tube of almost any material. The fin is formed by rolling material from the outside of the exterior tube to give an integral fin with excellent heat transfer properties and longevity. Extruded fin offers excellent corrosion protection of the base tube. Maximum operating temperature for this fin type is 280°C.
Fin material : Aluminium.
Tube materials : No theoretical limits.
Manufacturing Process:
A carefully degreased core tube is fitted into an aluminium primary tube.This assembly is then fed into the triple-spindle finning head of the fin-extruding machine. Three special multi-disc packs extrude the aluminium tube into helical high fins while reducing the inner diameter to give firm pressure contact with the core tube
Fin materials: Aluminium
Base tube materials: Any metallic material
Advantages:
Relative thin wall core tubes can be used.
Excellent heat transfer performance (100% contact between tube and fin).
Excellent atmospheric corrosion (complete coverage of the core tube).
Airtight fin to tube bond.
Robust fins resist mechanical damage.
Can be cleaned with high pressure water/steam.
Fin Contact: Interference fit with mechanically solid pressed bond.
Maximum Tube Wall Operating Temperature:300°C.
Type of Service: Medium temperature, severe atmospheric corrosive environment.
Properties:
Cold Extrusion is the manufacturing process.
Excellent Fin-to-Tube Bond
Excellent Heat Transfer Efficiency
Mechanical Resistance: Excellent (as a result, unlike other fin tubes, it can be cleaned often with high-pressure jets). As a result, downtime is reduced and total life is increased.)
Corrosion Protection: Because it completely covers the base tube, it provides excellent corrosion protection (except bare ends).
Temperature Range: Up to 300 degrees Celsius
Applications:
Primary extruded finned tubes are used in high temperature conditions and corrosive atmospheric conditions, such as operating temperatures less than 300°C or off-shore applications,heat pipes air to air heat exchangers for HVAC applications,air dehumidification in air treatment plants, energy recovery in air exhaust system. This kind of fin design is the least economical as compared to the other fin types, main reason due to the increased amount of aluminum used around 40% also increased labors during the manufacturing. However this increased cost can be compensated if using lower grade parent tube material.
Specifications:
| Product Specification | ||
| Tube OD | 10~51 (mm) | 0.4”~2” |
| Tube Wall Thk | 1.65~3.0 (mm) | 0.065”~0.118” |
| Tube Length | ≤18,500 (mm) | ≤60.7 ft |
| Fin Thk | 0.3~1.2 (mm) | 0.012”~0.047” |
| Fin Height | 5~16 (mm) | 0.2”~0.63” |
| Fin Pitch | 100~555 (mm) | 3~14 FPI |
| Fin Type | Extruded | |
| Material Combinations | ||
| Fin Material | Aluminum (most common grade:Alu.1100, Alu.1060, Alu. 6063) | |
| Copper | ||
| Tube Material | C.S. (most common grade: A179, A192,SA210 GrA1/C,A106 Gr B ) | |
| S.S. (most common grade: TP304, 316, 321, 347,A789) | ||
| Copper (most common grade:UNS12200,14200, 70600, CuNi70/30, CuNi 90/10) | ||
| Titanium (most common grade: B338Gr2) | ||
| Applied Temperature |
300°C | |
| Type of Service | Medium temperature, severe atmospheric corrosive environment. | |
Product Categories : Extruded Finned Tube
Fin Type: Extruded Fin Tube
Tube Material: copper, copper nickel, stainless steel, titanium etc.
Fin Material: Copper, aluminum
Aluminum extruded finned tubes using the form of the base tube covered with aluminum tube(the base tube can be carbon steel, stainless steel, copper) through machine extrusion, forming a tube fin, the fin base and the tube outer wall is close fitting, this fin tubing control can make finned tubes with high heat transfer coefficient and heat transfer performance.
Aluminum extruded finned tubes, also called [integral finned tubes" using the form of the base tube covered with aluminum tube(the base tube can be carbon steel, stainless steel, copper) through machine extrusion, forming a tube fin, the fin base and the tube outer wall is close fitting, this fin tubing control can make finned tubes with high heat transfer coefficient and heat transfer performance.Extruded Finned Tube can be made of iron, copper or aluminum tube by compound rolling, which has the advantages of tight bonding, small thermal resistance, good heat transfer performance, high strength, small flow loss, strong anti-corrosion performance, not easy to deformation under long-term hot and cold working conditions, long working life and so on.
Extruded finned tube manufacturing process
Pipe line--compressing or rolling--strip peeling--washing--pressure test--blast blowing--packaging.
The Extruded Finned Tube is formed by a bimetallic tube consisting of an aluminum outer tube and an inner tube of almost any material. The fin is formed by rolling the material from the outside of the outer tube to provide an integrated fin with excellent heat transfer performance and life. The extruded fins provide excellent corrosion protection for the base tube.
The production method of the composite finned tube mainly includes the extrusion method: the bimetallic composite tube is lined with a mandrel, and driven by the rotation of the roller blade, the composite tube is processed on the outer surface through the cavity formed by the rolling groove and the core head Out fins. The heat transfer tube produced by this method is an organic whole with its outer tube and fins, so there is no problem of contact heat loss, and it has good performance and high heat transfer efficiency.
FAQ
Q: What is your the lead time for production?
A: Generally Sample needs 1-3 days, mass production needs 15-30 days, also depends on your request.
Q: What is the warranty for your products?
A :We provide one year warranty for the products.
Q: What payment terms do you accept?
A :Trade assurance,TT,Western Union.
Q: What are the modes of transportation of machines?
A: Air freight, sea freight express delivery, etc. We will choose the most suitable transportation method according to your requirements.
