SA-179 Carbon Steel Laser-Welded Finned Tubes

Laser Welded Finned Tube Product Description:

The fin strip is welded continuously and spirally wound onto bare tube. And the tube and fins are bonded together by using lase welding technique.

The laser welded fin tubes are widely applied in fired heaters, Heat Exchanger, boilers, economizers, pre-heaters, coolers, heat pipes, heaters etc.

Laser Welding Fin Tube Manufacturing Process:

The fin strip is welded continuously and spirally wound onto a polished bare tube. And the tube and fins are bonded together by using advanced laser welding technique.

Laser Welding Fin Tube(Welded Spiral Pipe) Advantages:

1.Thin and continuous ideal seams

2.Small heat affected area

3.Slightly discolored welding parts

4.The tubes and fins have only slight microstructure changes

5.High heat forms seams

6.Since the high welding integrity between the tube and the fins is avoided, the crevice corrosion is avoided, thereby improving safety

7.Laser welding is carried out in a protective atmosphere, so the weld is free of impurities

Laser Welded Finned Tube(Stainless Steel Welded Pipes) Properties:

1.a high degree of automation, automatic fins laser welding machine can realize one-time completion of welding, synchronous winding make the fin foot and the pipe depth of weld.

2.laser welding, high firmness, high binding force. Laser welding is metallurgical bonding, welding strength is more than 600MPa.

3.laser welding machine with high accuracy, welding a 8 meter long fin tube with a precision of 0.05mm.

4.the heat transfer coefficient can be improved greatly by laser welding.

5.laser welding finned segment length is less than or equal to 2.5 mm, heat dissipation area than the high frequency welded pipe (distance is more than or equal to 4.5 mm) increased by nearly 50%, greatly reducing the material of the tube, also can decrease the change of the volume of the heat exchanger.

Laser Welded Finned Tube(Stainless Steel Welded Pipe) Applications：

1.Power Plants

Cooling towers or cooling water recooling plants with dry, dry / wet or wet operation  

Flue gas cooling and heating in flue gas desulfurisation scrubbers (FGD) and nitrogen removing plants

2.Chemical Industry

Heat exchangers of all kinds for cooling and heating of liquids and gases

Heat exchangers tor nitric acid (HNO3) plants, e.g. for the fertilizer industry

3.Heat Recovery Plants

Flue gas coolers

4.Heating Industry

Primary heat exchangers in gas heating boilers

Secondary heat exchangers for domestic water heating in condensing boilers

5.General Engineering

Heat exchangers for gas cooling of industrial furnaces

Heat exchangers for tank heating

Oil coolers for vacuum plants, ship plants, pumps etc.

Heat exchangers for oil preheating

Laser Welded Finned Tube(Spiral Welding Pipe) Specifications：