Serrated Finned Tube For Heat Exchanger

Short Description:

Serrated Finned Tube is a high-frequency welding production process with high-frequency patented technology. Using high-frequency power supply as a heat source, the steel strip and steel pipe are heated at the same time, so that they can be

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Serrated Finned Tube For Heat Exchanger
Serrated Finned Tube is a high-frequency welding production process with high-frequency patented technology. Using high-frequency power supply as a heat source, the steel strip and steel pipe are heated at the same time, so that they can be welded together. It has the characteristics of long life, wide temperature range and high pressure tolerance.
 
 
Serrated Finned Tube Quick Details:
Core tube material: carbon steel, low alloy steel, stainless steel, brass, copper, copper-nickel alloy, aluminum bronze, nickel alloy.
1. Carbon steel: A179, A192, SA210 Gr A1/C, A106 Gr B
2. Stainless steel: TP304/304L, TP316/TP316L
3. Copper: UNS12200/UNS14200/UNS70600, CuNi70/30, CuNi 90/10
4. Titanium: B338 Gr 2
 Fin type: U fins,perforated,twist...
Fin material: aluminum, copper, steel
1. Aluminum (Alu.1100, Alu.1060)
2. Copper.
3. Steel
Fin Tube Type: Plain Strips
Fin number: 2/ 4/ 8/ 16/ 18/ 32/ 36 piece per row
Number of fins: 16/20/24/32/40
Tube OD: 19mm min.
Tube Length: 18 meters max.
Fin height: 16.5mm max.
Fin thickness: generally 0.4mm~0.6mm
Fin pitch: 2.1mm minimum (12FPI)
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
 
 

The case of Serrated Finned Tube

 
We can customize Serrated Finned Tube according to your drawings
Example:

 
Manufacturing Process:
Serrated Finned Tube use high-frequency welding production process, using high-frequency power source as heat source, to heat steel strip and steel pipe at the same time, so that they can be welded together into one
1. U-bends with longitudinal fins and fin coils are available on request.
2. Longitudinal fin types: one piece, standard U-bend, cut and twisted, perforated, etc...
3. The fin channels are welded to the tube in pairs. The fin height, number of fins, and fin thickness can be specified.
4. Fins can be used for OD pipe or NB pipe.
 
Serrated Finned Tube is combined with two different materials
Core tube material: carbon steel, low alloy steel, stainless steel, brass, copper, copper-nickel alloy, aluminum bronze, nickel alloy.
Carbon Steel Tubes A179, A192, SA210 Gr A1/C, A106 Gr B, A333 Gr3 Gr6 Gr8, A334 Gr3 Gr6 Gr8, 09CrCuSb, DIN 17175 St35.8  St45.8, EN 10216 P195 P235 P265, GB/T3087 Gr10 Gr20, GB/T5310 20G 20MnG,
Alloy Steel Tubes A209 T1 T1a,A213 T2 T5 T9 T11 T12 T22 T91,A335 P2 P5 P9 P11 P12 P22 P91,EN 10216-2 13CrMo4-5 10CrMo9-10 15NiCuMoNb5-6-4
Stainless Steel Tubes TP304/304L, TP316/TP316L TP310/310S TP347/TP347H
Copper Tubes UNS12200/UNS14200/UNS70600, CuNi70/30, CuNi 90/10
Titanium Tubes B338 Gr 2
 
Fin material: aluminum, copper, steel
1. Aluminum (Alu.1100, Alu.1060)
2. Copper.
3. Steel
 

Delivery conditions
The tube ends are square cut without burrs, the inside is dry and blown clean, and the ends of the L-shaped tension wound finned tube are coated with varnish on the outside.
 
Acceptance Criteria
API Standard 661 (Air-Cooled Heat Exchangers for General Refinery Service) or Delivery Conditions (TDC).
 
 
Features of Serrated Finned Tube
1. Simple and economical installation. The maximum length of the sawtooth high-frequency welded spiral finned tube can reach 16 meters, which reduces the number of connection points, makes the installation more economical and quicker, and reduces the probability of water leakage at the connection.
2. Easy to maintain. After the serrated high-frequency welded spiral fin tube is installed, it is basically maintenance-free.
3. High-efficiency, sawtooth high-frequency welding spiral finned tube is full contact welding of fin and steel tube winding, the heat dissipation area is more than 8 times that of the light tube, the interior is smoother, and the internal water flow resistance is small.
4. Long service life, high mechanical strength of fins and pipes, tensile strength of more than 200Mpa, and hot-dip galvanizing treatment inside and outside the pipes.
 
Application
Serrated Finned Tube is a new, wear-resistant and high-efficiency heat-exchange material. It is a high-efficiency and energy-saving heat-exchange element. It is widely used in waste heat recovery, petrochemical, power station boilers, economizers, passenger cars, industrial and civil building heating and refrigeration. , Medicine drying, wood drying, grain drying systems and other industries.
 

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