Integrally finned tubes by low finning / Integral fin tube: kind low fin:
Integral low fin tube to be used in things wherever extended surface is needed, however lack of house or device kind dictates otherwise.
Available materials ar stainless-steel (304L, 316L, 321(H), 304H, 310, …), duplex steel, copper alloys, Copper Nickel, nickel alloys, hastelloy.
Integral Low Fin Tube has their advantage that it will improve the thermal performance of a device while not the requirement for dynamic shell size, flow arrangement or the locating of piping.
The external surface of the tube is redoubled by the formation of \'\'low fins\'\' by direct extrusion from the fabric of the bottom tube.
Size vary / Dimensions:
Tube size: twelve,7mm, 15,88mm, 19,05mm and twenty five,4mm
Fins per inch: sixteen, 19, 26, 28, 30, 32, 36, forty and forty three fins/inch dependent on material
Quality take a look at capabilities :
Non-destructive eddy current test.
Air below water testing
Hydrostatic testing (with fluorescent dye)
Fins profile examination at 50x magnification,
Dimensional & ring gage checks
Applications : Refrigeration, air con, condenser, device, boiler, Finned device bundle
Norms :
ASME pressure vessel code Sec.8, UG-8 and Div. one appendix twenty three
ASTM B891: commonplace Specification for Seamless and Welded atomic number 22 and atomic number 22 Alloy Condenser and HeatExchanger Tubes With Integral Fins
ASTM A1012: commonplace Specification for Seamless and Welded Ferritic, solid solution and Duplex steel Condenser and warmth money dealer Tubes with Integral Fins
ASTM B924: commonplace Specification for Seamless and Welded nickel-base alloy Condenser and warmth money dealer Tubes With Integral Fins
ASTM A498: commonplace Specification for Seamless and Welded Carbon, Ferritic and solid solution steel Heat dealer Tubes with Integral Fins
ASTM B359: commonplace Specification for Copper and Copper-Alloy Seamless Condenser and warmth money dealer
Tubes With Integral Fins
In specifying finned tubes you must advise:
1) range of finned tubes needed
2) Outside diameter of tube
3) Tube thickness or thickness needed below root of fin
4) Length of finned tube
5) range of fins per in.
6) Unfinned ends
7) Skipped parts and dimensions from one finish
8) Material of tubes.
In specifying U-tubes you must advise:
1) Tube diameter, thickness and material
2) Straight leg length
3) Centre line radius (or diameter) and range off per row
4) whether or not post bend heat treatment is needed
5) whether or not hydraulic testing is needed
Key Words: Finned Tube, Fin Tubes, Extruded Fin Tubes, Embedded Fin Tube, Tubos Aletados, Integrally finned tubes