Stud fin tube is made by electrical Resistance welding specially formed Studs(Round pins ) in rows around the tube. The Studs can be supplied in a variety of Sizes and shapes. Also named pin fin tube.Stud tube have a very high heat transfer efficiency.The heat exchange efficiency is equivalent to 2-3 times that of the bare pipe. To increase the surface heat transfer coefficient of flue gas to the furnace tube.Reduce the amount of bare pipes used in these processes. (Heat transfer surface of one studded pipe is equivalent to surface of 4 to 10 bare pipes).
Studded tubes are generally used in furnaces and boilers where the surface is exposed to a very corrosive environment and where very dirty gas streams require frequent or aggressive cleaning.
Increase efficiency in the process of heat recovery and direct flame hostile atmospheres.
Studded Pipe’s ideal for processes applications where dirty fuels are used and harsh environments in terms of temperature and / or corrosion.Easier cleaning especially for operating cases with very dirty flue gas produced by burning heavy oil, diesel or residual oil.
Its high resistance to harsh environments, such as sections of Sulfuric Acid atmospheres, makes it very useful for the industries mentioned.
Base Tube Material:
stainless steel stud tube, carbon steel stud pipe,alloy steel studded tube.
Material Grade:
A335 P1,P5,P9,P11, A213 T9,T11,T22,TP304,TP316/316L,TP321
A106GrB,A210 Gr A1, A210 GrC,ASME SA192/ASTM A192
ASME SA213/ASTM A213 TP304/304L TP316/TP316L TP321
TP310S TP317,
Studs Material:
Carbon steel ASTM A510 grade 1005 to 1010. Stainless steel AISI 304, 316, 410, 347, 321.ASTM A193 Grade: B6, B6X, B8, B8a, B8M, B8C. Cr-Mo alloy etc.
Base pipe O.D:31.75-165mm Stud height:10-60mm
Stud pitch: as customer's request.
End:Plain Ends, Beveled Ends
Bare tube length on both side:As Customer's request.
Application:
Boiler,Super heater, Gas furnace burner, heat exchange equipment ,chemical equipment,heat recovery of the petrochemical industry, in areas of convection ovens, vacuum generators for chemical processing, etc.Boiler stud tube,Super heater stud tube, Gas furnace burner stud tube.
Package:
In bundles, plywood cases, wooden cases with water-proof package, etc.
High Frequency Welded fin tube also called solid type fin tube,use steel or stainless steel strip directly welded to tube surface by HFW.Can improving heat transfer efficiency much more than bare tube.Due to the tight welding of the fins to the base tube, these finned tubes are often used in vibrating conditions.Fin type have Serrated fin and flat fin.
L type fin tube, The fin is helically wound around the base tube forming a strong mechanical contact between the tube and fin, thus improving the heat transfer efficiency.Also named Wrap On fin tube. This also give considerable corrosion protection to the base tube.
KL type fin tube same as L fin tube,except that the base tube is knurled before application of the fin foot.Also named Wrap On Knurled type fin tube.After application,the fin foot is knurled into the corresponding knurling on the base tube thereby enhancing the bond between fin and tube,Resulting in improved heat transfer efficiency.