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CT series
Water tube steam boilers

The perfect combination of heat transfer, welding, and pressure vessel design technologies, our water tube industrial boilers are the result of 40+ years of experience in industrial, petrochemical, and power generation industries. They have applications in heat recovery solutions and superheated water production.

Key features

steam capacity

Steam capacity

up to 200 t/h



up to 80 barg



up to 97.5%


NOx Emissions

down to 30 mg/Nm³
(according to BAT)


H2 ready2OK

Design versatility: our boilers are suitable for producing saturated and superheated steam, as well as superheated water.

Suitable for unique and advanced fuels: Syngas, Biogas, Process Gas, and natural gas mixed with H2.

High thermal efficiency: the implemented heat transfer scheme is carefully calculated in the multi-tube design.

Compliance with international technical standards, including PED, ASME, SELO, GOST-R & RTN, TR-TS certifications.

Intelligent control system and dynamic monitoring of the boiler operation: suitable for integration with the automation of process equipment and other information systems.

Turnkey supply.

CT series water tube steam generators are D-shape designed, with bottom and top drums; tubes expanded in the drum holes using automatic equipment; a furnace with a “membrane wall”; and a burner at the front wall or on the side, depending on the capacity and application.

The outer walls and drums are thermally insulated with high-density mineral wool and hermetically sheathed with stainless steel sheets for outdoor installation. The casing is attached to the supporting structure and can be easily dismantled.

Natural circulation of water inside the boiler is provided, and gas tightness is achieved due to the outer walls made of membrane panels.

Compatible Products

Demineralization plant

Boiler water feeding requires low hardness concentration and conductivity to reduce the blow-down (heat loss). Two different types of treatment can be used: membrane-based technology and ionic-exchange solutions. Dedicated pre-treatments are necessary, based on the available water source.


It is necessary to remove CO2 and O2 to prevent corrosion phenomena. There are two options available: conventional packages composed of a tower and a drum, or the compact “smart” unit where the degassing equipment is realized inside the drum. The performance range is 7-20 ppb, according to the type of the installed unit.

Condensate treatment

It is necessary to purify the steam condensate from the process, to reduce water consumption and recover the heat contained in the condensate.

Dosing of chemical products

Oxygen scavengers are used as the protective dosage downstream of the thermo-physical degassers and the alkalizing agents to maintain a high pH inside the boiler. The choice of proper water treatment represents the energy optimization of the steam generator/water treatment package and a source of savings in water extraction and discharge costs.