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{"title":"G TYPE EMBEDDED FINNED TUBE A179 BARE PIPE ALUMINIUM FIN AIR COOLER","imgUrl":"https:\/\/img.chinax.com\/nimg\/be\/59\/c5a08aca39a427ad7db8f7550e9a-200x200-1\/g_type_embedded_finned_tube_a179_bare_pipe_aluminium_fin_air_cooler.jpg","attrs":{"Brand Name":"YUHONG","Model Number":"EMBEDDED G-FIN TUBE","Certification":"ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008","Place of Origin":"CHINA"}}
{"title":"Studded Tube , ASTM A213 T9 \/ ASME SA213 T11 with 11Cr (SS 409) Studded Fin Tube","imgUrl":"https:\/\/img.chinax.com\/nimg\/00\/5e\/193bf5e1420e2ad6d787493b5761-200x200-1\/studded_tube_2c_astm_a213_t9_2f_asme_sa213_t11_with_11cr_28ss_409_29_studded_fin_tube_2csteam_reforming_furnace.jpg","attrs":{"Brand Name":"YUHONG","Model Number":"Studded Fin Tube , Pin Tube, Oil Furnace Tube , Steam Furnace Tube, Reforming Tube","Certification":"ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008","Place of Origin":"China, Korea"}}
{"title":"ASTM A179 Carbon Steel Seamless Tube with Aluminum ASTM B221 6063 (1060),","imgUrl":"https:\/\/img.chinax.com\/nimg\/7b\/14\/2f89f1fc083fb0d86fc1c8c6a7b5-200x200-1\/astm_a179_carbon_steel_seamless_tube_with_aluminum_astm_b221_6063_281060_29_2c_extruded_fin_tube.jpg","attrs":{"Brand Name":"YUHONG","Model Number":"Extruded Fin Tube","Certification":"ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008","Place of Origin":"China, Korea"}}
{"title":"ASME SA210 Gr.A1 Seamless Tube with Aluminum Al1060 Embedded G type Fin tube","imgUrl":"https:\/\/img.chinax.com\/nimg\/42\/83\/722d4f6a846d5b7ec435ca0956f1-200x200-1\/asme_sa210_gr_a1_seamless_tube_with_aluminum_al1060_embedded_g_type_fin_tube.jpg","attrs":{"Brand Name":"YUHONG","Model Number":"A179, A192, SA210 Gr A1\/C, A106 Gr B, TP304\/304L,TP316\/TP316L\/316Ti, A789 S31803\/S2205 Copper:UNS12200\/UNS14200\/UNS70600, CuNi70\/30,CuNi 90\/10","Certification":"ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008","Place of Origin":"China"}}
{"title":"Welded Helical Serrated Fin Tubes HFW Fin Tube For Per Heating Application","imgUrl":"https:\/\/img.chinax.com\/nimg\/e9\/39\/0f0159470fee4c18f8581ab23fed-200x200-1\/welded_helical_serrated_fin_tubes_hfw_fin_tube_for_per_heating_application.jpg","attrs":{"Brand Name":"YUHONG","Model Number":"HFW fin Tube , Serrated Fin Tube","Certification":"ISO , PED, API , CE","Place of Origin":"CHINA"}}
{"title":"ASME SA179 , ASTM A179 Carbon Steel Low Finned Tube, for Air Cooler, cooling","imgUrl":"https:\/\/img.chinax.com\/nimg\/e1\/4f\/b53764af2b239d868febd1d5d10a-200x200-1\/asme_sa179_2c_astm_a179_carbon_steel_low_finned_tube_2c_for_air_cooler_2c_cooling_tower_application.jpg","attrs":{"Brand Name":"YUHONG","Model Number":"Low Fin Tube, Low Finned Tube","Certification":"ABS, GL, DNV, NK, PED, AD2000, CCS, ISO 9001-2008","Place of Origin":"CHINA"}}
{"title":"ASTM A179\/ ASME SA179 Carbon Steel Seamless Tube with Aluminum 1060\uff0c Air Cooler,","imgUrl":"https:\/\/img.chinax.com\/nimg\/38\/23\/670b6953aaff63cf0fbfa25b3c77-200x200-1\/astm_a179_2f_asme_sa179_carbon_steel_seamless_tube_with_aluminum_1060_ef_bc_8c_air_cooler_2c_extruded_fin_tube_2cembedded_g_fin_tu.jpg","attrs":{"Brand Name":"YUHONG","Model Number":"A179 , A192, A210 Gr.A1, C , ASTM A213 T11, T22, T5, T9","Certification":"ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008","Place of Origin":"China"}}
G TYPE EMBEDDED FINNED TUBE A179 BARE PIPE ALUMINIUM FIN AIR COOLER
What are the characteristics of G-fin tubes?
The heat transfer characteristics of G-fin tubes are related to the contact thermal resistance between the finned tubes, and the core of the contact thermal resistance is the contact pressure between them. Obviously, the heat transfer characteristics of welded chips and sleeves are better, followed by bimetallic pipes, with poor insertion and winding. After re curling, the contact area of the KLM finned tube increased by about 50% and was not affected by the outer diameter tolerance of the tube. After multiple cold cycles, the contact is good, the contact thermal resistance is small, and the heat transfer characteristics are high. The slotted finned tube can increase the disturbance of air flow and increase the total heat transfer coefficient by about 20%.
As the wall temperature of the G-fin tubes with room temperature performance increases, the contact pressure between the pin and the tube changes, and the contact thermal resistance also changes. The fluctuation value depends on the type of finned tube and the initial contact pressure. As the temperature increases, the pin tension around the chip rapidly decreases, resulting in a rapid increase in contact thermal resistance. Bimetal rolling can maintain stability over a wide temperature range.
The bare tube of the G-fin tubes is protected by the wing to prevent atmospheric corrosion. Due to different protection ranges, the ability of various types of finned tubes to resist atmospheric corrosion also varies. Among various finned tubes, bimetallic rolling is good. All finned tubes that have undergone hot-dip galvanizing treatment have good atmospheric corrosion resistance. Chemical plants with corrosive gases in the atmosphere should pay special attention to the selection of raw materials and types of finned tubes, as aluminum needles are prone to corrosion.
In many operations of finned tubes, pressure is the material and wall thickness selected in the bottom tube, but it is also related to the type of finned tube. Rolling (bare tube made of aluminum copper material) has low pressure resistance and is not suitable for use in air coolers. The bottom tube of the embedded chip has a rolling groove, and the working pressure decreases with the increase of working temperature.
Clean the dirt on the gas side of the dirty G-fin tubes, usually using compressed air, steam, or high-pressure water. In this way, the fins have corresponding stiffness.
Manufacturing costs. From the perspective of raw material consumption of G-fin tubes, the circumference is low and the bimetallic rollers and sleeves are high. The consumption of bimetallic aluminum rolling is 1/3 to 1/2 more than that of wrapping. From the perspective of production and processing costs, the circumference is lower, the bimetallic rolling is higher, and the sleeve is higher. All finned tubes that require surface hot-dip galvanizing are relatively expensive in terms of raw material consumption or manufacturing process.
YUHONG HOLDING GROUP is one of the largest Procurement, Engineering & Contracting Group companies in China. Our group branch company and factory have been already approved by : ABS, LR, DNV, GL, BV, CCS, KR, PED 97/23/EC, AD2000-WO, GOST9941-81, CCS, TS, CNNC, ISO9...
YUHONG HOLDING GROUP is one of the largest Procurement, Engineering & Contracting Group companies in China. Our group branch company and factory have been already approved by : ABS, LR, DNV, GL, BV, CCS, KR, PED 97/23/EC, AD2000-WO, GOST9941-81, CCS, TS, CNNC, ISO9...
