أنبوب الزعنفة المبثوق

Integral Low Finned Tubes

• These have fin height less than or equal to fin pitch.
• Tube Length: Up to 32 meter.
• Outside Diameter OD: Between 9.52 mm and 38.10 المليمتر.
• Tube Wall Thickness WT: 0.58 المليمتر (min) and above.
• Fins per Inch: 11, 16, 19, 23, 26, 30, 40 و 52 FPI.
• Available in ferrous and nonferrous materials Copper Alloys, Copper-Nickel alloy, Admiralty Brass Alloy C44300, Aluminum Brass Alloy C68700, Carbon Steel.

Integral Medium High Finned Tubes

• Fin height more than fin pitch.
• Tube Length: Up to 32 meter.
• القطر الخارجي: Between 19.05 mm and 31.75 المليمتر.
• Tube wall thickness: 2.1 المليمتر (min) and above.
• Fins per Inch: 11, 16 و 19 FPI.
• Available in ferrous and nonferrous materials.

Low Finned U Bend Tubes

• Manufactured on in-house finned tube bending facility.
• Easy to install in the equipment maintaining the circulation ratio.
• Absorb thermal shocks in heat exchanger.
• Available in Copper Alloys, Copper-Nickel alloy, Admiralty Brass Alloy C44300, Aluminum Brass Alloy C68700, Carbon Steel, 304 and 304L Stainless Steel ranging from 30R to 710R.

Low finned tubes with internal rib

• Externally enhanced surface area with integrally helical ribs on the inner side.
• Improved inside heat transfer coefficient.
• Available in Copper, سبائك النحاس والنيكل, Carbon Steel with externally 19, 26 fins per inch and internally 8, 10 Ribs.

Low Finned Tubes Coils

• Manufactured by coiling the integral finned tube.
• Improved heat transfer area therefore compact size of heat exchangers.
• Available in Copper, in coil diameters as per user’s requirement (Min Coil ID 50 المليمتر).

High Finned Tubes

• High Finned Tubes have extruded fin heights up to 0.625″ (16المليمتر). Single metal and bi-metallic finned tubes are available. Bi-metal finned tubes have a separate alloy liner tube inside the extruded fins. The mono-metal finned tubes have no liner tube with the fins integral with the tube.

Corrugated Tubes

• Manufactured by corrugation process of indenting plain tube with smooth and uniform spiral projections, which generate turbulence in both outside and inside media.
• Higher turbulence ensures uniform temperature distribution.
• No thinning of tube wall during process of corrugation.

Extruded Finned Tubes Characteristics

• Heat transfer per meter of tube on the outside is equal to the heat transfer per meter on the inside.
• The intermediate un-finned section and un-finned sections at both ends help to slip the integral finned tubes in to the tube-sheets of shell and tube heat exchanger in a manner similar to plain tubes.

Extruded Finned Tubes Benefits

• Combination of lower fin height and more fins per meter maintains the general ratio of 1:1 fin height to fin spacing.
• Doesn’t require higher tube pitch therefore, doesn’t require shell size higher than shell of bare tube heat exchanger.
• Improved heat transfer coefficient and rate of heat transfer as compared to conventional finned tube designs.
• Compact design of heat exchanger having lesser weight and size.
• Improved tube life.

Extruded Finned Tubes Quality Assurance

• Compliance with quality standards, ASME SB111, SB-359, SA-213, SA-450 and all codes as per ASME /EN/ JS.
• Customer / Third Party Inspection TPI.
• Fin dimensions checking by IMTEs and Profile checking on profile projector.
• Stress Relief Annealing of non-ferrous fin tube on in-house electric conveyor belt furnace.
• Stress relief annealing of ferrous fin tubes as per specifications provided if required by client at additional cost.
• 100% tubes tested for leakages by Hydrostatic Test as per standard and customers requirements.
• Third Party Inspection can be offered from Lloyd’s, بي, TUV, BHEL, NTPC, Intertek, اس جي اس, EIL, IBR etc. وفقا لمتطلبات العملاء.

Extruded Finned Tubes Applications

• HVAC & مرجل
• محطات توليد الطاقة
• Heat Recovery Steam Generators
• Petrochemical Industries
• Marine Applications
• Refrigeration Applications
• Economizers
• Oil and Gas Coolers
• Plumbing and Air Conditioning
• Condensers and Evaporators
• Shell and Tube Heat Exchanger
• Other various Heat exchanger applications