Solid Fuel Fired with Options of Coal / Wood / Briquettes / Other Agro Waste TE-WBC series is a three pass, fully wetback steam boiler, suitable for a wide range of pressures and heavy workloads. Each boiler is tailor made as per the requirement to meet your steam requirements. Over the years, we have improved the TE-WBC series design according to the emerging solid fuel alternatives, making this series an ideal solution for different solid fuel options.