Low Finned Tube For Heat Exchangers Low-fin (integral) tube is an extruded tube composed of short and low fins, and a high-efficiency heat-exchange tube type in which threaded fins are formed on the outer surface of the heat-exchange tube by rolling. The tube and fin are in the same piece of tube, also known as “N” fin type. Because Low Finned Tube is an integral tube, there is only one material for the tube and fins We offer you a wide range of materials and can expand our offering at any time to meet your specific needs in terms of thermal conductivity, mechanical properties or corrosion resistance. Standard Specification for Low Finned Tubes Carbon Steel: ASTM A 498 Stainless Steel: ASTM A 1012 Copper and Copper Alloys: ASTM B 359 Titanium and Titanium Alloys: ASTM B 891 Material: Carbon Steel: A179, A192, SA210 Gr A1/C, Stainless Steel: SA 213/A 213 TP304/304L, TP316/TP316L/316Ti, Duplex Stainless Steel: SA 789 S31803/S2205, Copper and copper alloys SB 111 / B 111 UNS12200/UNS14200/UNS70600, CuNi70/30, CuNi 90/10, Titanium and titanium alloys: SB 338 / B 338 GR1 GR2 GR3 GR5 GR6 GR7 GR9 GR12 GR16 GR17 etc. Low Finned Tube Quick Details: Fin type: Solid plain Outer diameter (OD): 12.7mm~25.4mm Tube length: up to 25000mm Fin height: 1.2mm ~2.77mm Fin thickness: about 0.3mm Fin pitch: 30 FPI/28 FPI/26 FPI/36 FPI/43 FPI Additional Info Payment Terms:T/T, LC Delivery: 15-30 days after payment Marking: Standard + Steel Grade + Size + Heat No + Lot No Package: Iron frame packing boxes and the desiccants are put into each package for continental transportation as well. or as required