L-shaped and double L-shaped finned tubes: the most advanced numerical control L-shaped finned tube machine in China is used to keep the bonding force of the tubes in the best state through digital control. The trapezoidal section formed by rolling is consistent with the distribution of heat flow density. On the basis of saving materials, the thermal efficiency is greatly improved, and the contact thermal resistance of the tandem finned tubes caused by the inability to eliminate the tube gap is eliminated.

L Type finned tube is a kind of efficient heat exchange component and advanced energy-saving product widely used at present, which has the characteristics of high processing efficiency, chip free processing and low cost. Typical is ASTM A213 TP304 L Type Fin Tube. The heat transfer area of spiral finned heat pipe wound with L-shaped finned tube is several to dozens of times that of smooth tube, and the heat transfer efficiency is more than twice that of smooth tube.

Stainless Steel Tube with L Type fin tubes

Tube material/ size : SA179, 1.25” (31.75mm)OD x 12G(2.77mmt) x 9144mm length

Fin type  : Aluminium Extruded fin

Fin data : Fin OD 63.5mm, fin thickness av.0.4mm, fin pitch 10FPI, fin  length 9000mm

Bare tube ends (both ends) : 72mm

Quantity : 540nos

Please advice FASTEST DELIVERY inclusive of option for air freight

1) SA-213-TP304 L Type Finned Tubes

Type: L type

Tube material: SA-213-TP304

Fin Material: B221 Aluminium A1060 H14 

Tube Size: OD 17.5 x 1.65 thk (avg) x 785 mm L    

Fin size: 8 mm High x 0.2794 mm thk, 9 fpi

Unfinned length: 50 mm (both end)

Quantity: 33 nos

2) SA-213-TP304 L Type Finned Tubes

Type: L type

Tube material: SA-213-TP304

Fin Material: B221 Aluminium A1060 H14 

Tube Size: OD 17.5 x 1.65 thk (min) x 1295 mm L    

Fin size: 8 mm High x 0.2794 mm thk, 9 fpi

Unfinned length: 50 mm (both end)

 Quantity: 33 nos

3) SA-213-TP304 L Type Finned Tubes

Type: L type

Tube material: SA-213-TP304

Fin Material: B221 Aluminium A1060 H14 

Tube Size: OD 20 x 1.65 thk (min) x 2400 mm L    

Fin size: 10 mm High x 0.2794 mm thk, 7 fpi

Unfinned length: 50 mm (both end)

Quantity: 175 nos

4) SA-213-TP304 L Type Finned Tubes

Type: L type

Tube material: SA-213-TP304

Fin Material: B221 Aluminium A1060 H14 

Tube Size: OD 17.5 x 1.65 thk (min) x 1590 mm L    

Fin size: 8 mm High x 0.2794 mm thk, 7 fpi

Unfinned length: 50 mm (both end)

Quantity: 33 nos

L-shaped finned tube

1. L-shaped finned tube scope of application and characteristics:

a. L-shaped finned tube Maximum operating temperature ≤ 150 ° C

b. L-shaped finned tube Maximum operating pressure ≤ 32MPa

c. L-shaped finned tube Advantages: low price, widely used.

d. L-shaped finned tube Disadvantages:

1. The thermal shock performance is poor, and it is not easy to be used in places with large vibration.

2. It is not easy to use on wet air cooler.

L Type Finned Tubes