DELLOK Oil Refining Carbon Steel Aluminum Finned Tube
About Us
DELLOK (YONGHUI RADIATING PIPE MANUFACTURING CO.,LTD.) was established in 2002, which is located in Jiangsu, China. After many years of development, the company now has 66 million yuan in fixed assets, more than 200 employees, and 33 technical staffs. We have 4 aluminum processing production lines, with the annual processing capacity of more than 20,000 tons; And we have 5 tube-drawing production lines; 47 fintube production lines, 1 imported production line from American with the brand of McElroy , with the annual production capacity of 12 million meters the above. Quality is the theme of eternal pursuit of winner -Production workshop- Meticulous works, standardized management system and systematic quality assurance are Dellok(YONGHUI)'s best commitment to quality. In Dellok(YONGHUI), the quality control is not only the detection of the final process, but throughout the entire production process. We implement a set of quality control and assurance systems. Each batch of pipes is sampled and tested, and records are kept as a quality guarantee for the final product.
Extruded Fin Tube Product Description:
Extruded Fin Tube, also known as Bimetallic Fin Tube, is a popular finning method for a variety of applications. The fins are created by extruding them onto an aluminium muff tube that is built to fit over the base tube with a tight tolerance.
Extrusion is performed using a Continuous Fin Extruder with Three Tooling Rolls, and high pressures in the range of 1200 psi are used. The cold working procedure ensures a perfect bond between the tube and the fin, resulting in great heat transfer efficiency. Simultaneously, the mechanical strength of the fins is greatly improved.
Fin Tubes are used in AIR FIN COOLERS, DRIERS, RADIATORS, and other applications in industries such as food and agriculture, power plants, chemical industries, steel plants, and chiller plants, among others.
Extruded Finned Tube Manufacturing Process:
A polished and deoiled base tube is set in an aluminium sleeve. The whole goes through the fin-machine which consists of three spindles set at 120° each on bearing a stack of plates. These plates, stacked in from and diameter first build the fin, then bond the outer and inner tubes together. In certain cases (high air speed) the fins are serrated after fin process so as to increase the heat transfer coefficient.
Extruded Fin Tubes 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.
Extruded Aluminum Tubing Properties:
Aluminum fins are formed from a bimetallic tube consisting of a base tube and an aluminium muff tube. The fins are formed on a cold rolling process from the wall thickness of the aluminium muff tube. Extruded fin gives very good corrosion protection to the base tube, as the base tube is not visible to the atmosphere inbetween the fins.
Maximum operating temperature for extruded finned tube is 325 deg C.
Fin Material - Aluminium (or) Copper
Tube Material - No theoretical limit
Aluminum Extruded Tubing Applications:
These Fin Tubes find application in AIR FIN COOLERS, DRIERS, RADIATORS etc and are preferred in Industries like Food and Agriculture, Power Plants, Chemical Industries, Steel Plants, Chiller Plants etc.
Extruded Aluminum Tube 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 Fin 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
1. What Does Fin Tube Mean?
A fin tube is a tube that has small fins around the outside surface. These fins act as a filter and a mechanism to transfer heat from the material inside the tube to the outside space or vice versa. Fin tubes are used in applications that require a transfer of heat from a hot fluid to a colder fluid through the tube's wall. The rate at which such heat transfer occurs depends on three factors:
The temperature difference between the two fluids.
The heat transfer coefficient between each of the fluids and the tube wall.
The surface area to which the fluid is exposed.
2. Where is finned tube heat exchanger used?
Finned tube heat exchangers generally use air to cool or heat fluids such as air, water, oil or gas, or they can be used to capture or recover waste heat. These heat exchangers can used in a broad range of industries including oil & gas, power generation, marine and HVAC&R.
3. What is extruded fin tube?
Extruded finned tubes are bimetallic tubes whose outer aluminium surface is finned by cold plastic deformation. There are two major types of finned tubes available with us, single metal tubes (also called mono metallic fin tube) and Bimetallic tube (composite extruded fin tube) .
4. Why Aluminium is recommended as a fin material?
Good corrosion resistance, formability and high thermal conductivity make aluminium an ideal material for the construction of these heat exchangers. A typical brazed heat exchanger (radiator or condenser) comprises fins, tubes, sideplates and headerplates.
5. Where are extruded fin tubes used?
Extruded Fin Tubes are widely used in the refinery, petrochemical and chemical industry for:
Air-cooled condensers
Air-cooled coolers for products
Gas coolers
Gas heaters
6. How do you ensure a quality product?
We adhere to an in-house Quality System (or QMS) based on Industry Standards such as ASME, the National Board of Boilers & Pressure Vessels, and customer requirements. Our quality system is documented, audited, and enforced by our Quality Control department.
