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High Efficiency Gas Oil Fired Boiler

  • Capacity 1~30t/h
  • Pressure 0.7/1.0/1.25/1.6Mpa
  • Fuel Natural gas, heavy oil, light oil, diesel oil, lpg, city gas, etc.
  • Application Light industry, textile, medicine, chemical, light industry, building material, food processing, wood processing, laundry, hotel, school, etc.
  • Certification ISO 9001, SGS, BV, CE, etc.

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Sitong WNS series high efficiency gas oil boiler is an safe equipment with full automatic control system, the efficiency could reach as high as 98% with the equipment of economizer or condenser. It is the patent products of Sitong Boiler, the patent number is 2014 2 0504448.2. This horizontal three pass fired tube steam boiler has wet back structure, it can adapt to the high temperature, has a good sealing, increase the radiation heat transfer area and improve the heat transfer efficiency. As a packaged fire tube boiler, it has the characteristics of compact structure and small size, strong load adaptability and low water quality requirement.

Peculiarities of Sitong High Efficiency Oil Gas Fired Boiler 
1. The thermal efficiency can reach to 98% after specific design.
2. The 100% NDT (non destructive testing) make sure more than 20 years’ working life.
3. The boiler adopts new stainless steel package, the appearance is much more delicate.
4. The equip of economizer saves 8% fuel consumption.
5. Condensate water devices saves 15% fuel consumption.
6. 40 years experience on oil gas boiler, the boiler failure rate is lower than 0.1.
7. The boiler starts up quickly, it can reach the rated working condition within 15 minutes.
8. The boiler use sitong patented technology, 100% completely butt welding, minimum stress, and the quality is more reliable.
9. Sitong Boiler has got CE certificate of WNS series steam boiler, also, we can offer SGS, BV inspection.
10. The brand of burner is Italy Baltur/ Rellio, fuel burn sufficiently. It has the function of furnace cleaning, automatic ignition, ignition detection, high and low pressure protection, and leakage detection, etc, ensure the safe operation and high combustion efficiency.  

Technical Features of High Efficiency Oil Gas Fired Boiler

1. Combustion sufficiently
Combustion chamber is composed by large diameter full corrugation furnace, large combustion space, sufficient combustion.
2. Multi-function safety explosion proof equipment
     Equipped with explosion proof equipment, which can prevent fuel occur deflagration in furnace, discharge high energy. Moreover, it has the fire sight glass and inspection gallery, it is convenient for furnace checking and maintaining.
3. Advanced automatic control
     Boiler controller use Siemens/Delixi electrical element, reliable property. Automatic control on pressure, water temperature, and smoke temperature, etc, ensure safe operation.
4. High steam quality
    Large steam space volume and enough height of the net distance between steam water interface and steam outlet.
5. Convenient to maintenance
     There is a manhole on the top of the boiler, and some special hand hold device at middle and lower position of boiler front and back end, it’s convenient for boiler internal installation, inspect and clean. 


Model Rated evaporation
capacity (t/h)
Rated steam
pressure (Mpa)
Thermal efficiency
Fuel consumption Overall dimension  
Body Heating
Area (m2)
Light oil (Kg/h) Natural gas (Nm³/h)
WNS1-0.7/1.0-Y(Q) 1 0.7/1.0 >90 66.5 75 3.6×2.0×2.0 4 25
WNS2-1.0/1.25-Y(Q) 2 1.0/1.25 >90.2 133 150 4.8×2.5×2.46 8 60
WNS4-1.0/1.25-Y(Q) 4 1.0/1.25 >91 266 300 5.8×2.85×2.8 13 113
WNS6-1.25/1.6-Y(Q) 6 1.25/1.6 >91.5 399 450 7.25×3.1×3.15 19 181
WN8-1.25/1.6-Y(Q) 8 1.25/1.6 >91.6 532 600 7.45×3.26×3.2 22.6 190
WNS15-1.25/1.6-Y(Q) 15 1.25/1.6 >91.8 997 1125 8.7×3.7×3.5 34 346
WNS20-1.25/1.6-Y(Q) 20 1.25/1.6 >92 1204 1418 10×3.6×4.0 45 467
Note: Parameter is for reference only, we can design the boilers based on customers’ needs.
Transaction Process
Customer Inquiry -- Offer Professional Consulting Service -- Place Order -- Customize Boiler Based on Customers’ needs --Production-manufacturing -- Payment -- Impeccable After Sale Service (installation and debugging, periodic maintenance, etc.)

Offered Technical Documentations
Installment and Operation Instruction
Quality Certificate
Inspection Certificate of Boiler quality
General Drawing of Boiler
Foundation Drawing
Boiler Body Drawing
Boiler Room Design Drawing
Drawing of Valves, Instruments and Accessories

Company Strength
Sitong boiler is a national approved and designated enterprise, with design and manufacture license permits of Class A boiler and D1, D2 pressure vessel. The company has passed ISO 9001 international quality system certification, and gained the international certificates of CE, SGS, and BV, etc. The boiler products are exported to more than 60 countries. The factory covers an area of 120 thousands㎡, equipped with plenty of international advanced manufacture equipment, such as CNC cutting machine, automatic submerged arc welding machine, X-ray detection machine, etc.
company strength of Sitong Boiler


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