Three Pass Fire Tube Steam Boiler/Hot Water Boiler
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... |
Introduction
YUANDA fire-tube boiler are designed for industrial processes requiring high-temperature steam or hot water. High thermal efficiency, energy saving, and automatic control.
Both horizontal and vertical gas/oil boilers are available, with full sets of boiler accessories.
WNS boiler is a packaged horizontal three-pass fire tube boiler. Large corrugated furnace, threaded smoke tubes, flue gas reversal chamber and a special economizer which helps the boiler save more fuel and work very efficiently.
Main characteristics：
● Power 350kw-14000kw, steam capacity 500kg-20.000kg
● Fuel with Natural gas, LPG, diesel, or heavy oil, dual fuel, biomass gas, waste gas
● Pressure up to 28 kg/cm²
● Up to 98% with wet back design & energy saving device
● ASME CE ISO DOSH EAC GB manufacturing standard
● PLC automatic control, touch screen
● Container boiler & skid mounted boiler is available
LHS packaged vertical fire tube boiler, is a upright small scale steam and hot water boiler. Fast heat up, 95% high efficiency. It is the leader among similar boiler products.
Main characteristics：
● Power 120kw-1400kw, steam capacity 100kg-2000kg
● Fuel with Natural gas, LPG, diesel, or heavy oil, dual fuel
● Pressure up to 13 kg/cm²
● Fast steam generation
● Up to 95% with energy saving device
● ASME CE ISO DOSH EAC GB standard
● PLC automatic control
Necessary parts including boiler body, burner, control panel, valves gauges, water pumps, water tank, water treatment, steam header, economizer, chimney etc. Condenser, deaerator, chemical dosing system, TDS discharge, RO reverse osmosis water treatment is optional.
●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.
Company Strength
■ Founded in 1956, a premium supplier assessed, certified, and inspected by SGS Group. Leading industrial boiler manufacturer in China.
■ Holds international boiler certifications: CE, ASME, DOSH, EAC, GOST, ISO
■ Over 17 years of export experience, gold-level supplier, ensuring payment and delivery.
■ Professional team integrating R&D, production, sales, and service.
■ 53,053㎡ Factory area, supporting video/VR factory audits or third-party inspections.
■ Engineers serving over 50 countries.
■ Products sold to over 130 countries/regions, covering food, beverage, textiles, paper, wood industries. Serving over 100,000 customers.
Products & Technology
■ Diverse Product Range: Fire-tube boilers, water-tube boilers, water-fire-tube boilers, combined boilers, vertical boilers, cogeneration boilers, waste heat recovery boilers, skid-mounted boilers, and mobile containerized boilers.
■ Flexible Fuels: Supports various fuels such as natural gas, biogas, lpg, diesel, heavy oil, dual fuels, coal, biomass, wood chips, sawdust, bagasse, wood residue, sawdust, forest waste, palm shells, hybrid biomass/gas, palm fiber, rice husks, walnut shells, electricity, etc.
■ Collaboration with advanced boiler research institutes ensures advanced technology and high energy efficiency.
Services & Markets
■ Local Projects: We have installed many boiler projects in different countries, can provide boiler case studies.
■ High Repurchase Rate: 55% of our customers are repeat customers or referral customers.
■ Local Support: We have long-term, reliable local agents, can provide one-stop service from installation and training to maintenance.
■ Comprehensive Service: From project planning to after-sales support, we provide comprehensive support throughout the whole boiler life, with 24/7 online support and immediate response.
Quality Assurance
(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-sale service:
We help customer choose the best boiler model according to different requirements of various industry. Before delivery we will provide foundation drawing, layout drawing, boiler room layout, etc.
In-sale service:
We keep 24 hours online and keep close contacts during the production process to ensure on time delivery with perfect finished product.
After-sale service:
1.provide full range of original spare parts.
2.We will send engineers to your local project site to guide the installation and commissioning.
3.Our engineers will held a training for boiler workers to ensure the safe operation.
4.Free maintenance and repair for one year and lifelong service.
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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