Fins are basically external surfaces on tube for increasing the surface area of the bare tube, resulting in a compact Heat Exchanger.

The method of attaching the fins over tube is of prime importance, since even a slightest air gap between the tube and fins will defeat the whole purpose of fins over the tube.

Considering the above facts Heft has indigenously designed and developed a special purpose tube fining machine capable of producing following types of finned tubes.

HEFT was formed in 1994 to provide the service to petrochemicals, power generation, chemicals, pharmaceuticals industries with high quality HELICAL WOUND FINNED HEAT EXCHANGERS tubing used in the maintenance and manufacture of the air cooled heat exchangers, air heaters & other related heat exchangers.

Finned tubes are able to even out the heat transfer between the inside of the tube and the outside. When the heat transfer coefficient on the outside of the tube is significantly lower than the heat transfer coefficient on the inside of the tube, there is a major advantage to incorporate fins on the outside tube surface to take full advantage of the high heat transfer rate on the inside of the tube.

By using a finned tube with eight times as much surface on the outside of the tube, the total length of the tube required for heating the viscous oil can be reduced by one sixth, Fins are basically external surface on tube for increasing the surface area of the bare tube, resulting in a compact heat exchanger.

Heft Engineers are specialized in to design and manufacturing of AIR COOLED HEAT EXCHANGER, using in-house manufactured finned tubes.

These heat exchangers offer following advantages over other conventionl & crimped type finned tube Heat Exchangers.

More surface area per square feet of heat exchanger
Lower air resistance, resulting in less power to deliver the requires C.F.M.
Reduction in number of tubes for given B.T.U. transfer per rate area, resulting in fuel saving
Light weight easier handling
More fins per inch can be incorporated on entire tube length

The combination of low friction air loses/ high air velocity and maximum heat transfer per square feet of face area results in extremely high heating or cooling capacity of heat exchanger in a given space.

The company has its own fining facilities, where finned tubes with various configuration and in variety of materials are manufactured.

Available in 'G', 'L' plain & crimped configuration. The finned tubes can be assembled to performance requirement of your specific application. Typical industrial application where HEFT AIR COOLED HEAT EXCHANGERS are in operation.

We only concentrate on Heat Exchangers

From simple Oil Coolers to complex Shell and Tube Heat Exchangers. Heft can design and manufacture heat exchangers related to almost all industrial application.

Design

Heft, specially developed software carries out calculations related to minor aspects of mechanical and thermal designs of heat exchangers. The software works according to ASME & TEMA STANDARDS.

Size and Types

The sizes range from 2" OD to a few meters, in a single or multiple pass.
Tubes can be straight or 'U' bundle.
Fixed-Tube Sheet Design.
Full-Through Floating-Head Design.
Split-Ring Floating-Head Design.
Bayonet Tube Design.

Material

Heat Exchangers are fabricated in Hastealloy, Inconel, all grade of Stainless Steel & Carbon Steel & any other weldable material operating in moderately high pressure and temperature range.

Description / Specification of Oil Coolers

We are involved in offering a wide range of Oil Coolers to our most valued clients. Our range of these are widely appreciated by our clients which are situated all round the nation. We offer our range of it at most affordable prices.

We introduce ourselves as an eminent trader and supplier of an extensive array of  Oil Coolers. Prior to dispatch, our quality controllers run numerous tests on the entire range on various parameters of quality and durability. The offered equipment is manufactured using superior quality components with the aid of sophisticated techniques at the vendors' end. Moreover, our precious clients can purchase it in different technical specifications at reasonable price from us within promised time frame.
Features:

Sturdy design
Highly durable
Application specific design 

Wire wound fin tube consists of a base tube with oval or near rectangular loops formed of wire which are wound helically over the tube with root soldering of foot of every loop to the tube. - The loop of wire creates greater turbulence thereby increasing the heat transfer coefficient. Root soldering along the entire length eliminates almost all air gaps between the fin and the tube. - For most applications, wire wound fin tubes make it possible to design a much compact heat exchanger coupled with lower pressure drop compared to conventional fin tube Wire wound finned tube with fixed solder bonded or flexible turbulator enables the design of a highly compact heat exchanger unit compared to other conventional fin tube in identical working condition. Wire Wound Fin Tubes with Base Tubes of: Stainless Steels , Carbon Steels , Copper , Ad. Brass , Cupro-NickelsOil Cooler Assembly We are engaged in manufacturing oil cooler assembly which is known for its effectual functioning among our valued clients. Our range is fabricated from oil cooler tubes with turbulators inserted, M.S fabricated tanks, copper fins and brackets which is used in substitute of imported aluminum oil cooler. 

Low finned tubes are a reliable solution for controlling the temperature of gases and liquids, or for evaporating and condensing refrigerants. Thanks to their larger heat transfer surface area, they offer considerable potential to save in terms of materials and fill volumes. The wide range of dimensions offered by Wieland Thermal Solutions makes these products perfect for a broad scope of applications in the refrigeration and air conditioning industry, for oil/gas coolers in machinery and plant engineering, and for intermediate vapor superheaters in process engineering. We offer you a broad portfolio of materials and can expand our offering at any time to meet your specific needs regarding thermal conductivity, mechanical properties, or corrosion resistance. Low finned tubes made by Wieland Thermal Solutions are already available in copper, copper-nickel, aluminum, steel, stainless steel, and titanium. Benefits at a glance: • Reliable solutions for diverse application areas • Larger heat transfer surface compared to smooth tubes • Savings in material thanks to reduced tube length • Fill level reductions on account of increased efficiency

The L type fin is commonly known as L fin. This finned tube is basically identical to the Wrap-On fin and produced with a combination of Wrap-On and Embedded.The fins are manufactured from strip which is preformed into an accurately controlled L shape similar to the L type, rolled into a taper which causes it to curl. It is then continuously helically wound under tension onto the tube. The fin hugs the tube. The base tube is knurled by a rotating tool, then the foot of the fin is knurled into the knurling of the base tube providing a tight bond with increased thermal performance. Providing the correct fin strip is used the foot of one fin butts up against the next fin and there is no gap between the fins. This gives some corrosion protection to the tube. The fins are secured at each end to prevent unwinding in a similar way as L fins. KL -Foot tension wound finned tubes are commonly used in applications with metal Maximum Operating Temperature- up to 320°C (608°F)

Thermic fluid Air heater is our gigantic variety of process equipments that are catering to the assorted requirements of different industrial applications in the cement, dairy, petrochemicals, fertilizer industries, food & beverage and allied industries,pharmaceutical,, steel industries etc,

Heft Engineers are specialized in to design and manufacturing of AIR COOLED HEAT EXCHANGER, using in-house manufactured finned tubes. These heat exchangers offer following advantages over other conventionl & crimped type finned tube Heat Exchangers. More surface area per square feet of heat exchanger Lower air resistance, resulting in less power to deliver the requires C.F.M. Reduction in number of tubes for given B.T.U. transfer per rate area, resulting in fuel saving Light weight easier handling More fins per inch can be incorporated on entire tube length The combination of low friction air loses/ high air velocity and maximum heat transfer per square feet of face area results in extremely high heating or cooling capacity of heat exchanger in a given space. The company has its own fining facilities, where finned tubes with various configuration and in variety of materials are manufactured. Available in 'G', 'L' plain & crimped configuration. The finned tubes can be assembled to performance requirement of your specific application. Typical industrial application where HEFT AIR COOLED HEAT EXCHANGERS are in operation.