Rated steam capacity:0.5ton-20ton/h;
Fuel:natural gas, diesel,heavy fuel oil, lpg,lng,cng,biogas,etc;
Rated steam pressure:1.0Mpa(10bar),1.25Mpa(13bar),1.6Mpa(16bar),2.5Mpa(25bar);
Application scope: the pharmaceutical, paper making, tobacco, printing and dyeing, garment and other industries. Civil: catering, laundry room, (hospital) disinfection, sauna, etc.   

WNS type steam boiler wet back type three return all the corrugated furnace, threaded smoke tube, heat has good scalabiity.The tube plate and the cylinder body adopts the flanged connection structure, the main body of weld butt structure, all adopt the automatic submerged arc welding. Heating area is abundant, large hearth structure, micro positive pressure combustion,combustion heat load is low, less emissions of harmful substances, many boiler combustion chamber design is reasonable,fully adapt to city gas, natural gas,light diesel oil, heavy oil and other fuels, fuel in the hearth of the micro positive pressure combustion, burning completely, less pollutants from flue gas, boiler flue gas blackness, the blackness of the smoke and dust concentration and noise technical indicators were better than the national a class area standards.

Structural characteristics 
1. Adopt horizontal full wet back structure, compact overall layout, beautiful and generous, high thermal efficiency.
2. Adopt micro-positive pressure operation, effectively improve the combustion intensity of the furnace, make the volume of the same capacity boiler smaller, at the same time eliminate the boiler furnace, flue air leakage, improve the thermal efficiency of the boiler.
3. External integrated finned tube economizer, external independent condenser, compact structure, easy maintenance, the use of the current more popular condensation technology, reduce the smoke exhaust temperature, improve thermal efficiency.
4. Adopt advanced EDA design technology, calculate furnace structure and size in detail, effectively control flue gas velocity and resistance, reasonably make full use of flame and flue gas heat exchange, improve boiler thermal efficiency.
5. The corrugated furnace structure not only increases the heating area but also increases the disturbance of the flue gas, and the threaded flue gas technology increases the convection heating surface.
6. Use frequency conversion water supply and control technology to ensure the condensation rate of water vapor in the flue gas.
7. The condenser adopts special steel with "low dew point corrosion resistance of sulfuric acid", which greatly improves its service life.
8. Adopting reasonable structural design and excellent fire-resistant and thermal insulation materials, the external temperature of the furnace body is greatly reduced to make the external temperature below 50 degrees (higher than the national standard), reducing heat loss and improving the thermal efficiency of the boiler.
9. Adopt a new design to reduce the emission of harmful substances during fuel combustion and meet the national environmental protection standards, especially the emission of nitrogen oxides, and meet the national low nitrogen emission standards.
10. Imported burners from many international famous brands are adopted to adapt to various application scenarios to ensure quality and safety.

Gas/oil fired steam boiler is widely used in hospitals, schools, textile mills, garment factories, large supermarket, garment factories, dyeing factory, hotel, dining room, restaurant, food factory, beverage factory, soy products, meat products factory, cannery, brewery, pharmaceutical factory, packaging plant, building materials factory, paint factory, swimming pool and other places of the enterprises and institutions.