A 6 ton boiler is an industrial steam boiler designed to produce 6,000 kg of steam per hour (6 TPH), equivalent to approximately 4.2 MW of thermal capacity. Depending on fuel type, boiler structure, and working pressure, the reference 2026 EXW price ranges from approximately USD 38,000 to 115,000 for WNS and SZS gas/oil-fired boilers and DZL and SZL coal/biomass-fired boilers.
A 6 ton steam boiler offers a flexible capacity range for factories that have outgrown smaller packaged boilers but do not yet require a large centralized steam station. At 6 TPH, customers can choose from WNS, SZS, DZL, and SZL designs according to fuel availability, operating pattern, and steam pressure. Gas/oil-fired systems prioritize automation and clean operation, while coal/biomass systems can reduce fuel costs where solid fuels are economical. SZS and SZL configurations can also meet higher-pressure requirements up to 2.5 MPa.
| Model |
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| the reference 2026 EXW price | USD 38,000 – 62,000 | USD 58,000 – 95,000 | USD 52,000 – 85,000 | USD 72,000 – 115,000 |
| Capacity | 6 t/h | 6 t/h | 6 t/h | 6 t/h |
| Boiler Type | Gas & oil fired steam boiler | Gas & oil fired steam boiler | Coal & biomass fired steam boiler | Coal & biomass fired steam boiler |
| Steam Pressure | 1.25 MPa | 1.25/1.6/2.5 MPa | 1.25 MPa | 1.25 MPa |
| Steam Temperature | 194 °C | 194 / 204/ 225 °C | 194 °C | 194 °C |
| Compatible Fuels | Light Oil, Heavy Oil, Natural Gas, City Gas, Biogas | Light Oil, Heavy Oil, Natural Gas, City Gas, Biogas | Coal, biomass | Coal, biomass |
| Thermal Efficiency | Up to 100.9% based on LHV with condenser; | Up to 100.9% based on LHV with condenser; | Up to 88% with economizer | Up to 88% with economizer |
| Design Features |
Ultra-Low-Nitrogen (Low-NOx <30mg); Integrated Condensing Recovery |
D-type longitudinal arrangement with water-in-tube natural circulation; Full membrane wall enclosing both furnace and convection bank (100% refractory brick-free). |
Eco-Friendly Compliance Automated Chain Grate; Smart Safety Alarm System and Higher Thermal Efficiency(82%-88%) |
Double-drum longitudinal arrangement with a robust water-tube structure; Full membrane water wall enclosing the furnace to improve sealing; Precision sectional air supply system underneath the automatic chain grate. |
| Core Advantages |
≥ 100.9% Efficiency(LHV): Cuts gas bills by 5%–8% via deep condensing recovery; Eco-Compliance: Easily passes strict low-carbon emission limits; |
Micro-positive pressure combustion with excellent gastightness to prevent flue gas leakage; Optimized water circulation designed to minimize the risk of tube vaporization and water hammer under rapid load changes. High Overload & Dry Steam: Generous double-drum steam space effortlessly buffers sudden industrial load spikes and delivers 99.5%+ high-purity dry steam. |
High Automation: Automated feeding and water regulation minimize manual labor; 82%–88% Efficiency: Generous combustion chamber with optimized fire-tube layout ensures rapid steam output. |
40% - 60% Fuel Saving: Burns low-cost solid biomass/coal, slashing fuel bills compared to gas or oil boilers; Sectional Air for Smokeless Burn: Under-grate air chambers allow precise oxygen tuning, ensuring complete, eco-friendly combustion; Superior Water-Tube Durability: Full membrane water-wall eliminates refractory tile maintenance and clinkering, ensuring long-term continuous operation under heavy loads. |
| Max Transport Weight(kg) | 16000 | 32000 | 22000 | 25000 |
| Max Transport Dimension/(LxWxH) (mm) | 5300 × 2400 × 2700 | 7800 × 3400 × 3400 | 6800 × 2700 × 3400 | 7700 × 2800 × 3450 |
| Transport Mode |
Land: 13.5m lowbed trailer (total height ≤ 3.7m); Sea: 40' Flat Rack container or Breakbulk |
Land: Special ultra-lowbed trailer (total height ≈ 4.3m, width 3.4m, oversized permit required); Sea: Breakbulk or OOG Flat Rack. |
Land: Ultra-lowbed heavy-duty trailer (total height ≈ 4.2m, width 2.7m, oversized permit required); Sea: Breakbulk or OOG Flat Rack. |
Land: Ultra-lowbed heavy-duty trailer (total height ≈ 4.3m, width 2.8m, oversized permit required); Sea: Breakbulk or OOG Flat Rack. |
| Installation | Skid-mounted / modular installation (overall lifting and positioning, no field assembly). | Skid-mounted / modular installation (overall lifting and positioning, minimal field piping). | Semi-assembled delivery (shop-assembled upper and lower parts, on-site splicing and sealing required). | Semi-assembled delivery (shop-assembled upper and lower parts, on-site splicing and sealing required). |
| Site Installation Requirements |
1. Foundation: Concrete pad (thickness ≥ 250mm, capacity ≥ 30 tons based on operational weight). 2. Space: 35-ton crane for unloading; clearance width > 3.5m, height > 4.5m. 3. Utilities: Piping and power cables routed to tie-in points in advance. |
1. Foundation: Reinforced concrete pad (thickness ≥ 350mm, capacity ≥ 50 tons based on operational weight). 2. Space: 50-ton crane for overall unloading and positioning; door/clearance width > 4.5m, height > 5.5m. 3. Utilities: Piping and power cables routed to tie-in points in advance. |
1. Foundation: Reinforced concrete pad (thickness ≥ 350mm, capacity ≥ 38 tons based on operational weight). 2. Space: 50-ton crane for unloading; clearance width > 4m, height > 5m. 3. Utilities: Piping and power cables routed to tie-in points in advance. |
1. Foundation: Reinforced concrete pad (thickness ≥ 350mm, capacity ≥ 40 tons based on operational weight). 2. Space: 50-ton crane for unloading; door/clearance width > 4.0m, height > 5.5m. 3. Utilities: Piping and power cables routed to tie-in points in advance. |
| Operating Parameters: Rated Gauge Pressure = 1.25 MPa | Standard Enthalpy Demand = 600,000 kcal/ton (Feedwater Temp.≈68°C） | ||||||
|---|---|---|---|---|---|---|
| Boiler Model | Operating Condition | Fuel Type | Thermal Efficiency | Unit Price | Fuel Consumption | Fuel Cost per Ton of Steam (USD) |
|
WNS6-1.25-YQ SZS6-1.25-YQ |
With condenser, LHV | Natural Gas | 100.9% | 0.46USD/m³ | 70.0m³ | 32.18 |
|
DZL6-1.25-T SZL6-1.25-T |
With economizer | Biomass Pellet | 88.0% | 0.16USD/kg | 170.5kg | 27.27 |
|
DZL6-1.25-T SZL6-1.25-T |
With economizer | Bituminous Coal | 88.0% | 0.13USD/kg | 136.4kg | 17.73 |
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Note: 1、All projections are theoretical estimates assuming constant fuel prices. Fuel calorific values and efficiencies are expressed on an LHV basis (Natural Gas: 8,500 kcal/m³ | Biomass: 4,000 kcal/kg | Bituminous Coal: 5,000 kcal/kg). 2、Thermal efficiencies are standardized baseline values for comparison only; actual performance varies with fuel quality, moisture content, and operating conditions. 3、For condensing natural gas boilers, efficiencies above 100% reflect LHV-based latent heat recovery. 4、Extra operating costs such as electricity, water, labor, and maintenance are excluded. 5、Intermediate calculations use full precision; displayed figures are rounded. |
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The reference 2026 EXW price of a 6 ton steam boiler:
6 ton gas/oil fired steam boiler (WNS): USD 38,000 – 62,000
6 ton gas/oil fired steam boiler (SZS): USD 58,000 – 95,000
6 ton coal/biomass fired steam boiler (DZL): USD 52,000 – 85,000
6 ton coal/biomass fired steam boiler (SZL): USD 72,000 – 115,000
The final price depends on working pressure, fuel system, burner selection, auxiliary equipment, and project requirements.
At an LHV of around 8,500 kcal/Nm³, a 6 ton boiler consumes about 450–470 Nm³/h at full capacity. With condensing heat recovery, gas use drops to around 410–430 Nm³/h.
SZL boilers handle auto-feeding, mechanical ash removal, and PLC control automatically. However, workers still need to manage the fuel yard and ash storage.
SZS gas/oil boilers are fully automated—they run on integrated burners and safety controls, needing just 1 operator per shift for basic monitoring.
SZL boilers cut fuel costs in areas with cheap biomass, but they take more daily labor and routine cleaning.
SZS boilers run cleaner and need less daily work; maintenance focuses mainly on the burner, safety valves, and water sensors.
It gives you a great balance of steam output and initial cost. It is easy to install, fits medium steam loads, and leaves room for future plant expansion.
A 6 ton model provides enough steam for most medium production lines without requiring heavy upfront capital. It also lets factories scale up in phases as demand grows.
It offers low financial risk, reasonable operating costs, and simple installation. To pick the right model, just match it to your peak steam demand, local fuel prices, and daily operating hours.
The concrete pad must support the boiler’s full operating weight and local seismic codes. You need at least 5–7 meters of vertical clearance for crane lifting. Solid-fuel models also require extra space for fuel storage and ash collection.
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Yongxing Special Equipment Co., Ltd. is located in Taikang County, Zhoukou City, Henan Province. Established in the early 1980s, it is a company specializing in the research, design, production, sales, installation, renovation, and a series of services for products such as boilers and pressure vessels.
As one of the earlier companies in the domestic boiler industry, Yongxing Special Equipment was the first to obtain the Class A boiler manufacturing license issued by the State Administration for Market Regulation. Subsequently, it acquired the Class A pressure vessel manufacturing license and the Class A boiler installation, renovation, and repair license.
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