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
Technical Details
FIN Details
Fins Thickness : 0.015",0.02",0.03",etc.
Fins Height : 3/8" to 1 1/2"
Fin Density : Min 43 Fins Per Meter To Max. 287 Fins Per Meter (depending On The Fin Density –FPM, And Fin Thickness)
Material : Carbon Steel, Stainless Steel, Alloy Steel, Duplex Steel And Incolloy. (Any Ferrous Material)
TUBE Details
Tube Diameter : 3/4" to 4"
Tube Thickness : Min 0.1"
Tube Mateial : Carbon Steel, Stainless Steel, Alloy Steel ,duplex Steel, Super Duplex Steel, Inconel, High Chrome High Nickle & Incolloy (Any Ferrous Material),and some other material.
High frequency welded fin 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.
High frequency welded fin 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).
Additional Info
Payment Terms:T/T, LC
Delivery: 15-30 days after payment
Marking: Standard + Steel Grade + Size + Heat No + Lot No
Package: Iron frame packing boxes and the desiccants are put into each package for continental transportation as well. or as
required
Production Technique & Applications
High frequency welded spiral finned tube is one of the most widely used finned tubes. It is a plain type fin, made by helically winding the fin strip on edge around the tube. The fin is continuously welded to the tube by a high frequency electrical resistance welding process which leaves the tube essentially unchanged metallurgically. The width of the weld is always greater than 90 percent of the thickness of the fin, assuring a strong bond between the fin and the tube for efficient heat transfer and long life.
Solid fins are preferred in fouling applications. The finished finned tube is extremely strong mechanically and has greater resistance to bursting pressure than the bare tube due to the reinforcing effect of the fin. Because of its excellent strength and resistance to deformation, this tubes are well suited for applications where severe abuse is expected in service.
Our Welded Helical finned tubes consist of steel fins wrapped helically around steel pipe, and continuously welded using the GMAW process. The fins may be either solid or serrated.
For Welded Helical Solid and Welded Helical Serrated finned tubes, the fin and tube materials can be any combination that can be welded together using the GMAW (gas-metal-arc-welding) process.
For Welded Longitudinal finned tubes, the fin and tube materials can be any combination that can be resistance welded together.
Manufacturing Process:
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.
Quality Control for HF Finned Tube
The quality of the HF Finned Tube is assured by hydrostatic or pneumatic testing, eddy current testing and tensile testing to
verify the mechanical bond between the inner tube and the outer fins
Delivery conditions
Burr-free, dry and blow-out inside, HF Finned Tube with varnish on both ends.
Features of HF Finned Tube
1. Due to the fast welding speed and strong self-cooling effect of the weldment, not only the heat affected zone is small, but
also oxidation is not easy to occur, so the structure and performance of the weld are very good.
2. Anti-corrosion performance, wear-resistant performance, low contact thermal resistance, high stability, and anti-fouling
ability.
3. Large heat exchange area.
Application
HF Finned Tube (high frequency welded spiral finned tube) is one of the most widely used spiral finned tubes, and is now widely
used in power, metallurgy, waste heat recovery in cement industry, petrochemical industry and other industries.
Packing,Shipping and others
Packing :To be packed in wooden crate
Marking:Each box to be legibly marked with the name of the manufacturer or supplier, the designation of material,condition,dimensions and weight
Shipping tools :Ship goods by van to departune port then by sea or air to desitination port.
Fin tubes produced by Datang Fin Tube
