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 |
| Pease email us for more information. |
