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SA214 ERW Carbon Steel , OD25.4X1.5WT KL Type Aluminum Refrigeration Tube
Application of SA214 ERW Tubes: For high, middle, low pressure boiler and pressure purpose
Surface treatment: Oil-dip, Varnish, Passivation, Phosphating, Shot Blasting
Detail:
| General KL Type production capacity | General specifications of KL Type fin tubes |
| Finning Facility: 7 finning machines; Daily capacity up to 5000 meters; | Tube OD: 50.8mm max. Tube Length: 18,000mm max. Fin Height: 16.5 mm max. Fin Thickness: generally 0.4mm ~0.6mm Fin Pitch: 2.1 mm (12FPI) min. |
Description:
Manufacturing process
The fin strip (normally aluminum) is folded into an ‘L’ shape and wound on to the base tube surface under tension. The surface of base tubes must be knurled before tension.The feet of the fins are joined together and cover the finned surface.
Protection of Ends
Both bare ends of Knurled Footed Fin Tubes 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) of clients.
Quality Test
The Overlapped Knurled Footed Fin Tubes quality is assured by hydrostatic or pneumatic tests, eddy current tests and tensile tests in order to verify the mechanical bonding between inner and outer tubes.
Accessories of KL type fin tubes
Tube Support Box, Clamp or Spacer Box (Materials: Aluminum, Zinc or Stainless Steel).
Delivery condition
Tube ends are square cut, free burrs, internally dried and air blown clean, externally coated with varnish at both ends of Overlapped Knurled Footed Fin Tubes.
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:
Knurled footed tube is combined with two different materials.
