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Finned tubes by rolling

Size and construction of the air coolers depends on the sufface of heat exchange, which consists of finned tubes. Finned tubes serve to transfer the maximum heat power on the minimum surface, with the minimum resistance of the air.

 

In air coolers we use tube bundles with tubes finned by means of integrated cold rolling process technology. We offer a wide range of tubes of developed internal and external areas, and using them in heat exchangers guarantees high heat efficiency with simple, compact structural design and long term reliable operation.

 

Diagonal cold rolling of monometal and bimetal finned tubes is a technology of the highest grade of advancement of technical and technological theory, and it enables to roll finned monometal aluminium and copper tubes, as well as bimetal ones, in assortment and quality on the level of parameters of the renowned world class producers. Since the finned tubes with high fins are used in exchangers cooled with air in chemical installations, petrochemical installations and power industry, they meet high requirements of operation.

 

The greatest advantages of the rolled finned tubes

  • Maximum degree of development of the external surface in order to ensure the high efficiency of cooling.
  • Use of base tubes in bimetallic tubes of metals and alloys of high mechanical qualities and high resistance to corrosion in high temperatures and high resistance to mechanical erosion.
  • High value of radial clamp in bimetallic connector, which guarantees a minimal resistance for heat flow.
  • High heat conduction of the materials used to make the external finning of the tube.
  • High mechanical endurance of the external fins, guaranting the invariability of shape and size of the fins during cleaning of the surface with water under high pressure.

 

Materials of core tubes:

  • copper
  • brass
  • carbon steel
  • high alloy steel
  • DUPLEX type steel
  • titanium

 

High finned bimetallic tubes

Base tube:

External diameter: Dw = 8-51 mm

Fins:

Diameter of fins: Dz = 14-82 mm

Pitch of fins: n = 5-11 ribs

 

High finned monometallic tubes (Al)

Material - aluminium

Parameters of ribbing:

Dz = 20-57 mm

dw = 20-38 mm

Dp = 15-44 mm

n = 5-11 ribs


High finned monometallic tubes (Cu)

Material - copper

Parameters of ribbing:

Dz = 19,5-38 mm

Dp = 14,2-26 mm

Dw = 9,5-22mm

 

 

Low finned monometallic tubes

Materials: Cu, Al., Fe, CuZn, CuNiFe, stainless steel

Parameters of ribbing:

Do = 9-32

Dz = 8,8-31,8 mm

Dp = 6,5-29 mm

dw= 4,5-27 mm


The supplier of finned tubes for Polimer is CEMAL Sp. z.o.o., ul. Biecka 19, 38-300 Gorlice.