DELLOK Air Cooled Heat Exchanger Helical Aluminum L/LL/KL Type Fin Tube API Standard 661

API Standard 661 air cooled heat exchanger helical

API Standard 661 air cooled heat exchanger helical aluminum finned tubes

Quick Detail:

General L-type production capacity

General specifications of L /LL /KL / G type fin tubes

Finning Facility: 7 finning machines;

Daily capacity up to 5000 meters;

Fin type: Solid plain

Tube OD: 50.8mm max.

Tube Length: no limit

Fin Height: 16 mm max.

Fin Thickness: generally 0.4mm ~0.6mm

Fin Pitch: 13FPI min.

Surface Protection

Both bare ends shall be Zinc or Aluminum metalized applied by an electro spray arc system coating.

Acceptance Criteria

API Standard 661(Air-Cooled Heat Exchangers for General Refinery Service) or the delivery conditions (TDC).

Accessories

Tube Support Box, Clamp or Spacer Box (Material: Aluminum, Zinc and Stainless Steel).

Packing:

The desiccants are put into each package for continental transportation as well.

Applications:

The common application fields are:

Heat exchangers units for power plant(electric, nuclear, thermal and geothermal power plants);
High corrosive systems (condensers, evaporators, sea water desalinations, fertilizing, urea systems, ammonia, gas, corrosive acids);
The petroleum, chemical and petrochemical industries;
The food processing and refrigeration industries;
Natural gas treatment;

Specifications:

L Type Tension Wound Tube is combined with two different materials.

Items

General Materials

Popular ASTM Materials

Core Tube Material

Carbon steel, low-alloy steel, stainless steel, brass, copper, cooper-nickel alloys, aluminum bronze, nickel alloys.

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

Fins Material

Aluminum & Copper & Steel

1. Aluminum

2. Copper.

3. Steel

All dimensions are in Inches and specification upon your requests.
Tube OD	Fin Height	Fin Thickness	Fins per Pitch
5/8	3/8,1/2	.015/.016/ .020	6, 7, 8, 9, 10, 11, 12
3/4	5/8,1/2	.015/.016/ .020	6, 7, 8, 9, 10, 11, 12
1	5/8,1/2	.015/.016/ .020	6, 7, 8, 9, 10, 11, 12
1 1/4	5/8,1/2	.015/.016/ .020	6, 7, 8, 9, 10, 11, 12
1 1/2	5/8,1/2	.015/.016/ .020	6, 7, 8, 9, 10, 11, 12
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