Packaged three pass fire tube boiler with larger corrugated furnace
WNS gas/oil boiler adopts horizontal fire tube structure, which can provide larger steam/water output. Three pass wet-back design, larger corugated furmace, thread smoke tube with unique expansion welding technique, high quality and environmental protection.
| Output: | Steam, Hot-water |
| Capacity: | 0.1ton-40ton, 100kg-40000kg, 99kw-28000kw |
| Work Pressure: | 3-38bar, 0.3-3.8Mpa |
| Heat Temperature: | 0-450℃ |
| Applied Industry: | Food, Beverage, Feed, Textile, Paper, Chemical, Package, Refinery, Pharm, Building Material, Hotel... |
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Introduction
Yuanda Boiler - 69 Years of Industrial Boiler Manufacturing, a Globally Certified Boiler Factory
Founded in 1956, Yuanda Boiler is a Class A industrial boiler and pressure vessel manufacturer with 69 years of experience. We offer premium gas or oil fired steam boiler, hot water boiler, capacity from 0.1ton to 40ton, 100kw-14000kw, with ASME CE ISO EAC DOSH certification.
It can be used in a variety of industries such as food, beverage, milk, garment, pharmaceutical, building materials, chemicals, textile, paper mill, foam, feed mills, edible oils, starch, dairy products, wood processing, EPS, leather, battery, soap, refineries, rubber, packaging, laundry, hotel, slaughthouse, greenhouse...
WNS series gas/oil boiler is a fully automatic, horizontal fire-tube boiler, it adopts a three-pass wet-back structure and its features include: ① Large corrugated furnace; ② Threaded smoke tube; ③ Finned tube economizer/condenser; ④ Internationally renowned burners with modulation, valves&instruments; ⑤ Self-developed, highly compatible PLC control system with touch screen. It can realize high efficiency and energy saving of boilers, multi-system linkage + alarm, and safe operation for +25 years.
●High Quality, Long Service Life & Safety
①Five-level water detection system with anti-dry heating protection;
②Four-stage pressure safety control;
③Explosion-proof door with built-in fire viewer;
④Built-in steam separator ensures steam wetness below 1%
●High Efficiency, Lower Fuel Consumption
①Three pass boiler, with larger corrugated furnace and patented screw smoke tube design;
②Double 12mm aluminum silicate insulation layers;
③Finned-tube economizer with insulation significantly reduce comsumptions;
④Original well-known burner, automatic adjustment, improves fuel combustion efficiency.
●Durable Structure and Less Maintenance
①Wet-back reverse flame chamber design;
②Reinforced round steel tension rods;
③Rapid-solidification, high-strength refractory materials;
④Front and rear double opening-doors for easy access.
✔ Compact design saves space and costs – Smaller footprint, radiation losses and larger fuel savings
✔ Faster steam production = reduced downtime – No more waiting for steam.
✔ Energy-efficient operation – Cuts fuel use, saving you money long-term.
✔ Reliable, high-quality steam – Dry, saturated steam (97%+) for consistent performance.
✔ Eco-friendly – Optimized combustion reduces waste and resource consumption.
■ Founded in 1956, quality supplier inspected by SGS Group
■ CE ISO quality certified
■ More than 17 years of export experience, gold medal supplier, guaranteed payment and delivery
■ Integrating research&development production and sales
■ Support video/VR or third party factory inspection
■ Exported to 132 countries, more than 100,000 customers
Why believe Yuanda boiler quality?
(1) Strength calculation report with applied materials information;
(2) 100%NDT(non-destructive inspection) report of steel plate, tube and welding rod;
(3) 100% X-ray inspection( (Longitudinal, transversal safety inspection)): ensure the quality of entire boiler;
(4) Hydrostatic test: ensure the standard working pressure and safety;
(5) Third-party inspection report
(6) Passed ASME CE ISO DOSH EAC GOST boiler level certificate.
Service
Comprehensive Boiler Solutions – From Planning to Lifetime Support
Pre-Sales Support:Expert Design Guidance: Help you select the optimal boiler model tailored to your industry needs.
Detailed Technical Documentation: Provide certificates, CAD drawings, consumption analysis, and boiler room planning.
Customized Solutions: Deliver complete system designs including installation material lists.
Competitive Pricing: Factory-direct rates with uncompromised quality.
After-Sales Assurance:Genuine Spare Parts: Original components with reliable supply.
Global Installation & Commissioning: Overseas engineer dispatch available.
On-Site Training: Ensure safe and efficient operation.
24/7 Online Support: Rapid response for any technical needs.
Warranty & Lifelong Care: One-year free maintenance and lifetime service support.
Parameter
| Model | Capacity | Rated steam output | Rated pressure | Rated temperature | Feed water temperature | Fuel consumption | |
| (kg) | (Ton/hr) | (Mpa) | (℃) | (℃) | Light diesel oil(kg/h) | Natural gas(Nm3/h) | |
| WNS0.5 | 500kg | 0.5 | 0.4/0.7/1.0/1.25/1.6/2.5/3.0 mpa | 130～171 | 20/105 | 32 | 42.5 |
| WNS0.7 | 700kg | 0.7 | 130～171 | 20/105 | 49.5 | 51 | |
| WNS1 | 1000kg | 1.0 | 130～185 | 20/105 | 70 | 80 | |
| WNS1.5 | 1500kg | 1.5 | 130～185 | 20/105 | 108.7 | 115.4 | |
| WNS2 | 2000kg | 2 | 130～185 | 20/105 | 135.2 | 150.4 | |
| WNS3 | 3000kg | 3 | 130～226 | 20/105 | 192.9 | 212.1 | |
| WNS4 | 4000kg | 4 | 130～226 | 20/105 | 258.2 | 283.4 | |
| WNS5 | 5000kg | 5 | 130～226 | 20/105 | 323.5 | 354.7 | |
| WNS6 | 6000kg | 6 | 130～226 | 20/105 | 388.6 | 424.2 | |
| WNS8 | 8000kg | 8 | 130～226 | 20/105 | 514.6 | 566.3 | |
| WNS10 | 10000kg | 10 | 130～226 | 20/105 | 641.7 | 707.8 | |
| WNS12 | 12000kg | 12 | 130～226 | 20/105 | 768.9 | 849.3 | |
| WNS15 | 15000kg | 15 | 130～226 | 20/105 | 960.1 | 1061.7 | |
| WNS20 | 20000kg | 20 | 130～226 | 20/105 | 1276.2 | 1415.8 | |
| Model |
Rated heating capacity (mw) |
Rated working pressure (Mpa) |
Output water temperature (℃) |
Return water temperature (℃) |
Fuel consumption | |
| Light diesel oil(kg/h) | Natural gas(Nm3/h) | |||||
| WNS 0.35 | 0.35mw | Atmospheric pressure/0.7/1.0/1.25/1.6 | 85~130 ℃ | 70/60 ℃ | 31.6 | 36.6 |
| WNS 0.7 | 0.7mw | Atmospheric pressure/0.7/1.0/1.25/1.6 | 85~130 ℃ | 70/60 ℃ | 60.4 | 69.3 |
| WNS 1.4 | 1.4mw | Atmospheric pressure/0.7/1.0/1.25/1.6 | 85~130 ℃ | 70/60 ℃ | 122.8 | 146.1 |
| WNS 2.1 | 2.1mw | Atmospheric pressure/0.7/1.0/1.25/1.6 | 85~130 ℃ | 70/60 ℃ | 192.3 | 227.1 |
| WNS 2.8 | 2.8mw | Atmospheric pressure/0.7/1.0/1.25/1.6 | 85~130 ℃ | 70/60 ℃ | 246.1 | 286.5 |
| WNS 4.2 | 4.2mw | Atmospheric pressure/0.7/1.0/1.25/1.6 | 85~130 ℃ | 70/60 ℃ | 367.1 | 412.6 |
| WNS 5.6 | 5.6mw | Atmospheric pressure/0.7/1.0/1.25/1.6 | 85~130 ℃ | 70/60 ℃ | 490.2 | 543.7 |
| WNS 7.0 | 7.0mw | Atmospheric pressure/0.7/1.0/1.25/1.6 | 85~130 ℃ | 70/60 ℃ | 593.6 | 660.7 |
| WNS 10.5 | 10.5mw | Atmospheric pressure/0.7/1.0/1.25/1.6 | 85~130 ℃ | 70/60 ℃ | 936.5 | 998.8 |
| WNS 14 | 14mw | Atmospheric pressure/0.7/1.0/1.25/1.6 | 85~130 ℃ | 70/60 ℃ | 1200.8 | 1330.7 |
| Note: for place limited, we didn't list all models, if you need other capacity, pressure, fuel, please send us inquiry directly, we will send you detailed parameter. | ||||||
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