Sagar Air Pvt. Ltd. Manufactures Fin Tube Coils. Sagar Air Pvt. Ltd. Has projects division and equipment manufacturing division. Fin Tube Coils contain copper tube measuring 3/8", 1/2", 5/8" diameter. The Fin material is aluminium and copper. Fin Tube Coils have a fin spacing of 6 to 12 FPI. The headers of this material are either made of steel or copper. Fin Tube Coils have frames made of GI, aluminium or brass. The material finds its application in chilled water, hot water, DX or Stream.