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{"title":"ASTM A179 Wound Aluminum L Type Fin Tube , Air Cooler, Cooling Tower","imgUrl":"https:\/\/img.chinax.com\/nimg\/19\/c8\/642f948adf5a0a35b89b56b75749-200x200-1\/astm_a179_wound_aluminum_l_type_fin_tube_2c_air_cooler_2c_cooling_tower.jpg","attrs":{"Brand Name":"Yuhong","Model Number":"\u2018L\u2019Type Fin Tube , \u2018LL\u2019Type Fin Tube , \u2018KLM\u2019Fin Tube","Certification":"ABS, BV, DNV, CCS, LR","Place of Origin":"China"}}
{"title":"Wound L Type Fin Tube ASTM A249 TP304 For Heat Exchanger , Air Cooler","imgUrl":"https:\/\/img.chinax.com\/nimg\/ab\/f0\/fdbe36107b222ba3fd0dda69b1b1-200x200-1\/wound_l_type_fin_tube_astm_a249_tp304_for_heat_exchanger_2c_air_cooler.jpg","attrs":{"Brand Name":"Yuhong","Model Number":"L Type Fin Tube , LL Type Fin Tube , KLM Fin Tube","Certification":"ABS, BV, DNV, CCS, LR","Place of Origin":"China"}}
{"title":"ASTM A213 TP316L Wound With Aluminum 1060 Aluminum L Type Fin Tube , Air Cooler,","imgUrl":"https:\/\/img.chinax.com\/nimg\/b8\/bf\/dd0cf1ee5c4b6a02b815502cf215-200x200-1\/astm_a213_tp316l_wound_with_aluminum_1060_aluminum_l_type_fin_tube_2c_air_cooler_2c_cooling_tower.jpg","attrs":{"Brand Name":"Yuhong","Model Number":"L Type Fin Tube , LL Type Fin Tube , KLM Fin Tube","Certification":"ABS, BV, DNV, CCS, LR","Place of Origin":"China"}}
{"title":"Wound Fin Tube ASME SA210 Gr.A-1 Aluminum ASTM B209 Gr.1060 For Air Cooler ,","imgUrl":"https:\/\/img.chinax.com\/nimg\/5a\/be\/3a161e341e98b6714b07ca3a7b97-200x200-1\/wound_fin_tube_asme_sa210_gr_a_1_aluminum_astm_b209_gr_1060_for_air_cooler_2c_heat_exchager.jpg","attrs":{"Brand Name":"Yuhong","Model Number":"L Type Fin Tube , LL Type Fin Tube , KLM Fin Tube","Certification":"ABS, BV, DNV, CCS, LR","Place of Origin":"China"}}
{"title":"Wound Fin Tube ASTM A249 TP321 For Air Cooler , Heat Exchager , Condenser","imgUrl":"https:\/\/img.chinax.com\/nimg\/2a\/3c\/e3e2ce04ef1b5bfcd886b02cc803-200x200-1\/wound_fin_tube_astm_a249_tp321_for_air_cooler_2c_heat_exchager_2c_condenser.jpg","attrs":{"Brand Name":"Yuhong","Model Number":"L Type Fin Tube , LL Type Fin Tube , KLM Fin Tube","Certification":"ABS, BV, DNV, CCS, LR","Place of Origin":"China"}}
{"title":"Monel 400 ASME SB163 NO4400 Al 1060 Wound Fin Tube For Air Cooler , Heat","imgUrl":"https:\/\/img.chinax.com\/nimg\/98\/24\/5d2b290ea983d5fac8bbca1ad26f-200x200-1\/monel_400_asme_sb163_no4400_al_1060_wound_fin_tube_for_air_cooler_2c_heat_exchager.jpg","attrs":{"Brand Name":"Yuhong","Model Number":"L Type Fin Tube , LL Type Fin Tube , KLM Fin Tube","Certification":"ABS, BV, DNV, CCS, LR","Place of Origin":"China"}}
Air-cooled heat exchangers & air coolers,Air cooled condensers (ACC) in power plants,Oil coolers & hydraulic system coolers,Furnace waste heat recovery equipment and others
Wound L Fin Tube Packing
Ply-wooden Case With Iron Frame
Brand Name
YUHONG
Model Number
Wound L Fin Tube
Certification
ISO 9001-2015,ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS
Air-cooled heat exchangers & air coolers,Air cooled condensers (ACC) in power plants,Oil coolers & hydraulic system coolers,Furnace waste heat recovery equipment and others
Wound L Fin Tube Packing
Ply-wooden Case With Iron Frame
Brand Name
YUHONG
Model Number
Wound L Fin Tube
Certification
ISO 9001-2015,ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS
ASTM A179 Carbon Steel Wound L Fin Tube With Al1060 Fins for Boiler Systems Economizers
ASTM A179 carbon steel wound L fin tubes with Al1060 aluminum fins are high-efficiency heat transfer components specially designed for economizers in boiler systems. The base tube is manufactured in accordance with ASTM A179/A179M, which specifies cold-drawn low-carbon seamless steel tubes with good thermal conductivity and mechanical strength suitable for heat exchange service. The fins are made of 1060 pure aluminum (Al ≥99.6%), featuring ultra-high thermal conductivity, excellent formability, and corrosion resistance in low-temperature flue gas environments.
L-shaped fin strip is tightly wound onto the outer surface of the base tube under controlled tension, forming a stable and low thermal resistance bonding structure. This type of finned tube significantly increases the external heat transfer area, strengthens flue gas turbulence, and effectively recovers waste heat from low-temperature boiler flue gas to heat feedwater. It helps reduce exhaust gas temperature, improve overall boiler efficiency, and save fuel consumption.This L type of fin tubes is widely used in low-temperature economizers of industrial boilers and utility boilers, especially suitable for working conditions where the flue gas temperature is generally below 150℃, with low dust content and non-corrosive medium.
Chemical Composition (%) Maximum
Grade
C
Mn
P
S
A179
0.06-0.18
0.27-0.63
0.035
0.035
Mechanical Properties
Grade
Tensile Strength min
Yield Strength min
Elongation in 2" or 50mm min
A179
47ksi (325 MPa)
26ksi (180 MPa)
35%
Advantages
High Heat Transfer Efficiency:
L-type wound fin design significantly expands the heat transfer area (8-12 times that of bare tubes) and disturbs the flue gas flow, breaking the laminar boundary layer and increasing the heat transfer coefficient by 40-60%, thus realizing efficient waste heat recovery in low-temperature economizers.
Cost-Effective Performance
Excellent Corrosion Resistance & Long Service Life:
In the low-temperature flue gas environment of boiler economizers (usually ≤ 150℃), the Al1060 fins can naturally form a dense oxide film on the surface, effectively resisting sulfur corrosion and condensation corrosion. The ASTM A179 carbon steel base tube has moderate strength (tensile strength ≥ 325 MPa, yield strength ≥ 180 MPa) and good pressure resistance, which can withstand the working pressure of boiler feedwater and ensure long-term stable operation.
Compact & Lightweight Design:
Under the same heat transfer requirement, the L-type wound fin tube has a smaller volume and lighter weight than traditional bare tubes or other types of finned tubes.
Strong Adaptability to Working Conditions:
This product is specially designed for boiler economizers, perfectly matching the working conditions of low-temperature flue gas (120-300℃) and boiler feedwater/condensate (20-150℃). It is widely applicable to low-temperature economizers and waste heat recovery systems of power station boilers and industrial boilers, and can replace traditional bare tube economizers and some G-type/LL-type finned tubes, with strong versatility and adaptability.
Yuhong Holding Group has more than 35 years experience for pipeline products, till now we have 3 big joint venture factories, the total production area more than 130000 square meters, and more than 600 workers with 106 production lines give our clients excellent supporting always. &n... Yuhong Holding Group has more than 35 years experience for pipeline products, till now we have 3 big joint venture factories, the total production area more than 130000 square meters, and more than 600 workers with 106 production lines give our clients excellent supporting always. &n...
