D Type Steam Boiler is preferred in places where high pressure and high capacity are required. Design and production of water tube steam boiler is done in EN 12952 standards. High efficiency is provided by integrating with economizer. In a pipe splitting, it does not pose a great danger since only a small part of the water in the boiler turns into steam rapidly. Since the heating surface is high and the water volume is low, more steam is obtained from the unit heating surface. It responds to fast steam needs in a short time. When used together with the water conditioning system produced by our company, the boiler efficiency increases and it is protected from the damages that unconditional water can cause.