“LL” Fin Tube Manufactured in the same way as the “L” finned tube type except that the fin foot is overlapped to completely enclose the base tube thereby giving excellent corrosion resistance. This type of finned tube is often used as an alternative to the more expensive extruded type fin in corrosive environments. “LL”Fin Tube is suitable for high working temperatures up to 180°C. DIMENSION AND MATERIAL The following table shows Simcan’s manufacturing capabilities for “LL” Fin Tube: Tube O.D.: 19.0 to 51.0 (mm) 3/8” to 2” Tube Wall Thk.: L, LL, KL: 1.65 to 3.0 (mm) G: 2.11 to 3.5 (mm) L, LL, KL: 0.065” to 0.118” G: 0.083” to 0.138” Tube Length: ≤ 18,500 (mm)…