Negotiable
The date of payment from buyers deliver within days
Beijing
Long-term effective
2023-09-03 15:11
393
Company Profile
By certification [File Integrity]
Contact：cangyang(Mr.)
Email：
Telephone：
Phone：
Area：Beijing
Address：Beijing
Website：http://www.cyfintube.com/ http://cangyang.wacita.net/
Â
For normal extruded fin tube, the tubes ends are with fin stripped off, leaving the tube surface just be bright and naked. But for some projects, the customer need to prevent the naked base tube from corrosion, so they will require that there be some muff aluminum tube to cover the base tube at two ends. This is also called unfinned sleeve or aluminum exension.
Â
Â
The base copper tube (copper grade can be C12200, C70600, C44300, CuNi70/30, CuNi 90/10) is inserted into the aluminum muff tube, through rolling process, the fins are extruded out of the aluminum sleeve.
Â
After the finning process before stripping all the fins from base tube, part of finning will be removed by machining only the finning and then leaves an aluminum sleeve of about 0.5 to 0.8mm on the base tube.
Â
Â
The other fabrication process then is same as normal extruded fin tubes.
Â
In this way, the complete tube will be covered with a layer of aluminum after installed in the air cooled heat exchanger header box. The aluminum sleeve will protect the base tubes from corrosion outside and then extend the lifetime of the whole air cooler tube bundle.
Â
Â
|
Base Tube Material |
Seamless Carbon Steel (SA179, SA192, SA210, SA334 Gr.1) |
|
Welded Carbon Steel (SA214) |
|
|
Seamless Stainless Steel (SA213 SS304, SS316, A789 S31803/S2205) |
|
|
Welded Stainless Steel (SA249 SS304, SS316) |
|
|
Nickel Alloy (SB163 Alloy 825) |
|
|
Copper (C12200, C70600, C44300, CuNi70/30, CuNi 90/10) |
|
|
Aluminum and Titanium |
|
|
Base Tube OD |
0.4’’~2’’ (10~51mm) |
|
Base Tube Wall Thick |
0.065’’~0.118’’ (1.65~3.0mm) |
|
Base Tube Length |
Maximum 18280mm (60 feet) |
|
Fin Material |
Al1050, Al1060, Al1100, Al3003, Al6063, Copper |
|
Fin Height |
0.2’’~0.63’’ (5~16mm) |
|
Fin Thick |
Average fin thick is 0.4mm |
|
Fin Pitch |
3~18FPI |
|
Sleeve thickness |
0.5~0.8mm |
|
Sleeve length |
Decided by customers according to the whole air cooler design |
|
Fin Serrate Numbers |
12pieces, 24pieces |
|
Serrate Fin Depth |
6-8mm depending by serrate segments. |
Â
Maximum operating temperature for copper and aluminum composited fin tube is 300℃。
Â
Â
All tube ends will be covered with a plastic cap to protect the tube ends from corrosion
Between each layer of fin tubes, there will be a pearl to separate the fins from damaging
Inside the wooden case, there will waterproof tar paper or transparent film
Outside using the thick plywood case with steel frame welded and supported
The crates will be adequately blocked and fastened to prevent the goods moving inside the wooden case.
Package is strong enough for handling.
Â
Â
Heat Recovery Steam Generators
Petrochemical Industries
Refinery Plant
Oil and Gas Coolers
Condensers and Evaporators
Power Plants
Air Dehumidifiers
Energy Recovery Systems
Â
We can not only produce Copper and Aluminum Composited fin tube in extruded fin type, but also can do it in L Foot Tension Fin, Overlapped L Fin, KL Fin and Grooved G Fin. For all these fin type, the base tube can be with copper and fin material be aluminum.
Â
To avoid any mistanderstanding on your enquiry, we request you to provide the following datas.
Core Tube (Base Tube) Material and Quantity
Base Tube OD * tube wall thick * length
Fin Type and Fin Material
Fin Dimensions: Fin OD * Fin Thick * Fin Pitch * Unfinned Length at two sides
http://www.cyfintube.com/
