High-frequency welded spiral finned tube is one of the most widely
used spiral finned tubes, and is now widely used in power,
metallurgy, waste heat recovery in the cement industry and
petrochemical industries.The high-frequency welded spiral finned
tube is to use the skin effect and proximity effect of
high-frequency current to heat the outer surface of the steel strip
and the steel tube until the plastic state or melting, while the
steel strip is wound around the steel tube, under a certain
pressure of the winding steel strip.Finish welding. This
high-frequency welding is actually a solid-phase welding. Compared
with methods such as inlay, brazing (or integral hot-dip
galvanizing), it is more advanced in terms of product quality (high
welding rate of fins, up to 95%), productivity and
automation.Finned tubes are the main components of heat
exchangers.They are a series of tubes where fins have been added on
the outside to increase the contact area with the outside fluid, to
exchange heat and between the fluid inside the tube and the fluid
outside the tube.Finned tubes are elongated aluminium cladded
carbon steel flat tubes with brazed aluminium fins.Multiple types
and shapes of finned tubes exist including round tubes, oval tubes,
or flat tubes.Flat tubes, made of aluminium clad carbon steel tubes
with aluminium brazed fins, are the state of the art for power
plant air cooled condensers.Technical Specifications for
Monometalic Extruded Finned Tubes:Tube
CodeDddwPFinsperInch mmmmmmmmNos.MM-38-20-16-2.83820162.809MM-38-20-16-2.52.5410MM-38-20-16-2.32.3011MM-51-29-25-3.65129253.627MM-51-29-25-3.13.178MM-51-29-25-2.82.809MM-51-29-25-2.52.5410MM-51-29-25-2.32.3011MM-57-33-29-3.65733293.627MM-57-33-29-3.13.178MM-57-33-29-2.82.809MM-57-33-29-2.52.5410MM-57-33-29-2.32.3011MM
: Monometalic Extruded Finned
TubesD : Fin outer
diameterd : Root
diameterdw : Tube
IDP : Fin
pitch Items CodeDimensionsTolerancesTube outside
diameterD1Φ25~Φ219 mm±0.2 mmFin outside diameterD2Φ37~Φ279 mm±0.75
mmFin pitchM4~90 mm±0.2 mmFin heightH6~30 mm±0.75 mmTube
thicknessδ12~16 mm±0.15 mmFin thicknessδ20.8~2.5 mm±0.1 mmUnfinned
tube ends lengthL1customized±1‰*L1 mmUnfinned tube ends
lengthL2customized±1‰*L2 mmMaximum tube lengthL0.5~25 m±1‰*L mm/*
January 22, 2024 19:08:37 */!function(){function s(e,r){var
a,o={};try{e&&e.split(",").forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1
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