Copper made heat exchanger 18kw Energy saving Good quality, export to Russia, Ukraine,Turkey ,Italy, Pipe heat exchanger Material: copper, brass Model: Single pipe, dual pipe available Fins: as per your requirement. Main Heat Exchanger for Wall-mounted Gas Boiler Feature: Copper-made heat exchanger Single pipe/ Dual pipe exchanger Screw/ bayonet type connection Capacity 13kw to 36kw available 0. ...