High Frequency Welded Spiral Finned Tube
Base Tube Material:
Carbon Steel,Stainless Steel,Alloy Steel Fin Material:
Carbon Steel Strip,Stainless Steel Strip Tube OD:16-273mm Tube Thk:2.0-15.0mm Fin Thk:0.5-3.0mm Fin Pitch:3.0-30.0mm Fin Height:8.0-35.0mm
HF Finned Tube For Heat Exchangers
HF Finned Tube is also known as high frequency welded spiral finned
tube, high frequency welded spiral finned tube is a tubular
high-efficiency heat transfer element with spiral fins. The
extended surfaces (fins) can be solid or serrated and have up to
tens
of times more heat transfer area than a bare tube.
HF Finned Tube is a spiral winding of steel fins, which is
continuously welded on the steel pipe by high frequency resistance
welding (HFERW). A high-frequency current is introduced into the
workpiece, the welding contact surface is melted or semi-melted
by resistance heat, and then appropriate pressure is applied to the
welding contact surface to complete the welding of the finned
tube. This produces a uniform, clean and continuous finned tube
combined with no additional welding material for very efficient
heat flow and corrosion resistance.
High-frequency welded spiral finned tube is one of the most widely
used spiral finned tubes.
HF Finned Tube Quick Details:
Core tube material:
1. Carbon Steel: A106 / A179 /A192 / A210 etc...
2. Stainless Steel: TP304/304L,TP316/TP316L, TP347 etc...
3. Alloy Steel: P5,T5,P9,T9,T11,T22
Fin Material:
1. Aluminum (Alu.1100, Alu.1060)
2. Copper.
3. Steel
Tube/Pipe Size 1.00″ to 15.75″ OD
Fin Height 0.3mm to 49.50mm
Fin Segment Width 5/32″ or 5/16″
Fin Thickness 0.8 mm ~ 4.0 mm
Fin Pitch 1 to 20 fins per inch
Surface Protection: Both bare ends shall be zinc or aluminum
metallized by electrospray arc system coating.
Accessories: Tube support boxes, clamps or spacer boxes (materials:
aluminium, zinc and stainless steel).
Manufacture
High frequency and high frequency welding spiral finned pipe is one
of the most widely used spiral finned pipe at HDB.It is widely used
in power, metallurgy, cement industry waste heat recovery and
petrochemical industry.High frequency welding spiral finned pipe is
in the steel belt winding steel pipe at the same time
, using the skin effect and proximity effect of high frequency
current, the steel belt and the outer surface of the steel pipe are
heated until the plastic state or melting, and the welding is
completed under certain pressure of the wound steel belt.This high
frequency welding is actually a solid phase welding.Compared with
Mosaic, brazing (or overall hot dip galvanizing) and other methods,
it is more advanced in product quality (fin bonding rate is high,
up to 95%), productivity and automation.
Specifications
1). Add the heat exchange area and reduce the number of tubes, also
increase the fume flow section area to reduce the fume speed and
abrasion.
2). H type fin tube can be made to double H type fin tube, high
rigidness to fit long tube row.
3). H type fin economizer arranged in line to make the space into
many small zones, averaged air flow to reduce the abrasion.
4). With straight channel to gain the best ash-blowing effect.
5). The compact structure to reduce the weight and reduce the
manufacturing cost.
| Base Tube Material | Stainless Steel, Carbon Steel, Alloy Steel, Copper Alloy,Aluminum
,SA179 |
| Fin Material | Aluminum, Copper Alloy, Stainless Steel, Carbon Steel |
| Standard | ASME SA213/ASTM; ASME EA 106, ASME SA178, ASTM B1111 |
| Fin depth | 0.5-3mm |
| Base pipe O.D | 12.7-18mm |
| Fins per inch | 8-20Nos (as customer's request) |
| Test Requirement | Physical Property Test, Chemical Composition Analysis,
Non-Destructive Test, Other Inspection and Test as customer's
requirement. |
| Application | Air Cooler, Charge Air Chiller, Condenser, Evaporator, Fluid
Cooler, Gas Cooler, Oil Cooler, Radiator, Refrigeration, Steam to
Air Heat Exchange, super heater etc. |
Company Information
HD Boiler established in 1985, Zhangjiagang Hua Dong Boiler Co.,
Ltd. (trading as HD Boiler), is a professional industrial
manufacturer, producing utility boiler,industrial boiler,HRSG
boiler and all kinds of boiler parts, such as waterwall panels,
economizers, air preheaters, superheaters, headers, spiral fin
tubes, H-fin tubes, heat pipes etc. HD Boiler is located in Dong
Lai Industrial Park, east suburb of Zhang Jia Gang City. The
plant’s location is around 150km Expressway to Shanghai Port or
60km State Road to Suzhou or Wuxi, with transportation extending in
all directions conveniently and quickly.
