SA179 SMLS fin tubes for heat exchanger,air cooler Base tube material: SA179 SMLS 25mmOD*3mmTHK*5970mmLG Fin Material: AL1060; OD57.15mm X 10FPIX 0.4 mm THK Manufacturing Process: Finned tube is composited with iron-aluminum or copper-aluminum tube rolling out the fin, which feathers are tightness, small heat resistance, good heat transfer performance, high strength, small flow losses, strong corrosion resistant performance, not easy to deformation and a long working lifetime in cold and hot condition,etc. The fin givescomplete protection to the base tube and is much stronger than the applied type due to work hardening of the fin material during the extrusion process. Uppertemperature limit: 350�° Material: Aluminum, Copper, Carbon Steel, Alloy.etc. ASTM A179/A192ASTM A106/A53,ASTM/ASME SA210,ASTM A213 Bare tube OD: 8-51mm Fin Pitch: 1.6-10mm Fin Height: