¡á Specification Outer Dimension optional as per customer's requirements ¡á Material steel, copper and aluminium ¡á Fin Tube Size In Dia : 8 - 100 mm Fin Flight Height : 1-25.4 mm (Low, Middle and High Fin) Fin Flight Thickness : 0.2 - 1.0 mm ¡á Pressure 1.0 kgf/cm2 Immersed Liquid Transformer Oil