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fire tube steam boiler
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fire tube boiler manufacturer
oil gas fire tube boiler
fire tube steam boiler
fire tube boiler supplier
fire tube boiler manufacturer
oil gas fire tube boiler

Oil Gas Fire Tube Boiler

Smoke tube boiler | Fire tube oil gas boiler | Horizontal/vertical fire tube boiler

Fire tube boiler is the important heating quipment can produce steam or hot water. This boilers are fully automatic, safe and designed to operate on a wide range of liquid and gaseous fuels like heavy oil, light oil, gas, and dual fuel options.

Output: steam
Capacity: 500-40,000kg/hr 15hp-2500hp
Styles: horizontal / vertical
Available Fuel: heavy oil, diesel, furnace oil, biogas, NG, CNG, LNG, LPG, dual fuel
Applied Industries: food, beverage, feed mill, textile mill, paper mill, packaged, refinery, chemical, laundry, hotel, greenhouse etc


  • Fire Tube Boiler, Smoke Tube Boiler, Three Pass Shell Boiler
  • WNS series fire tube boiler is a horizontal type industrial boiler, equipped with gas/oil burner, can using natural gas, LPG, biogas, diesel oil or waste oil as fuel to power boiler, then generating steam for factory use.

  • Our fire tube(smoke tube) boiler adopts "first furnace tube pass" " second fire tube pass" "three fire tube pass", "wet back water wall", "large corrugated furnace" and "patented thread pipe" technology. It equipped with international European brand burners and valve groups, and independently developed high-matching PLC control system to realize muitiple linkages. The lock protection function ensure the equipment running 100% safety.

  • fire tube gas or diesel oil boiler
  • Our fire tube boiler adopting outstanding material, fully enclosed structure with door-opening typesmoke box, easy for maintenance.

  • Three-pass with wet back structure, ensure low maintenance cost.Low exhausted smoke temperature(60-90°C) ensure 10% higher efficiency than other boilers

  • Automatic operation of overtemperature,overpressure, watershortage, leakage detection and flameout and so on

  • wns fire tube boiler



Spirally Corrugated Furnace & Wet Back Structure

1. Bigger corrugated furnace design, increased 10% heating area and avoid damaged by heat expansion; 2. Wet back stucture reduce the back tube sheet temperature and protect it from cracking


3-Pass Spiral Fire Tubes (smoke tube) Technology

Use the advanced technology which is our patent to design the spiral tubes, to enhance the boiler thermal power 10-15% higher than normal, and avoid the spiral tube from ash deposition and wearing


Double Layer 12cm Aluminum Silicate Insulation

We use double layer 12cm aluminum silicate insulation cotton, boiler surface temperature is not higher than 40 ℃, energy saving and high efficiency


Economizer/Condensor Design, Energy Saving

Recycle exhausted smoke to heat feed water, reduce exhaust smoke temperature below 95 ℃, increase feed water temp then save fuel cost at least 6% per hour



From boiler solution, optimization to installation, 24 hours online, provide technical support and avoid risks for you


Based on user needs, we supply tailored service, boiler drawing&PID system, boiler room design, foundation drawings etc


Full-life After sale service. With our professional technical experts and service team, skilled technology provides customers with professional services


Our engineer on-site guidance installation and commissioning, ensure boiler running perfect, free training for boiler operator


According to the customer production requirements, provide professional boiler solutions, cost analysis, project investment budget, boiler drawing&installation and commissioning service


oil gas steam boiler
Model steam output
steam pressure
steam temperature
Feed water temperature
Fuel consumption
Light diesel oil(kg/h) Natural gas(Nm3/h)
WNS0.5-0.7/1.0/1.25/1.6-YQ 0.5 0.4 to 2.5 (4-25 in bar) 130~226 20/105 32.5 35.7
WNS1-0.7/1.0/1.25/1.6-YQ 1 0.4 to 2.5 (4-25 in bar) 130~226 20/105 64.6 70.1
WNS1.5-0.7/1.0/1.25/1.6-YQ 1.5 0.4 to 2.5 (4-25 in bar) 130~226 20/105 96.8 105.2
WNS2-0.7/1.0/1.25/1.6-YQ 2 0.4 to 2.5 (4-25 in bar) 130~226 20/105 129.3 140.3
WNS3-0.7/1.0/1.25/1.6-YQ 3 0.4 to 2.5 (4-25 in bar) 130~226 20/105 192.9 212.1
WNS4-0.7/1.0/1.25/1.6-YQ 4 0.4 to 2.5 (4-25 in bar) 130~226 20/105 258.2 283.4
WNS5-0.7/1.0/1.25/1.6-YQ 5 0.4 to 2.5 (4-25 in bar) 130~226 20/105 323.5 354.7
WNS6-0.7/1.0/1.25/1.6-YQ 6 0.4 to 2.5 (4-25 in bar) 130~226 20/105 388.6 424.2
WNS8-0.7/1.0/1.25/1.6-YQ 8 0.4 to 2.5 (4-25 in bar) 130~226 20/105 514.6 566.3
WNS10-0.7/1.0/1.25/1.6-YQ 10 0.4 to 2.5 (4-25 in bar) 130~226 20/105 641.7 707.8
WNS12-0.7/1.0/1.25/1.6-YQ 12 0.4 to 2.5 (4-25 in bar) 130~226 20/105 768.9 849.3
WNS15-0.7/1.0/1.25/1.6-YQ 15 0.4 to 2.5 (4-25 in bar) 130~226 20/105 960.1 1061.7
WNS20-0.7/1.0/1.25/1.6-YQ 20 0.4 to 2.5 (4-25 in bar) 130~226 20/105 1276.2 1415.8
Note: Standard boiler parameter is for your reference, should follow the actual technical data according customer needs & engineer design.

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