We are specialized in manufacturing extruded bimetal fin tubes, spiral fins type "G", type "L" and ... ERW fins. Both solid fins . We are specialized in manufacturing extruded bimetal fin tubes, spiral fins type "G", type "L" and ... Both solid fins and serrated fins can be effected.Materials: Aluminium, copper, brass, cupronickel, carbon steel, stainless steel, titanium, nickel alloy ...