Hot Water Boiler Manufacturer for Commercial & Industrial Heating
Gas- and oil-fired hot water boilers engineered for commercial buildings, district heating networks, and industrial heating applications. Our WNS boiler range covers 0.7–14 MW, with configurable operating pressure, water temperature, burners, controls, and auxiliary equipment.
We support boiler selection, system configuration, manufacturing, inspection, documentation, and commissioning support for EPC contractors, distributors, mechanical contractors, and facility owners.
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Product Specification
|
Model |
Rated Thermal Power |
Working Pressure |
Inlet / Outlet Water Temperature |
Thermal Efficiency |
Natural Gas Consumption |
Shipping Weight |
|
WNS0.7-1.0/95/70-Q |
0.7 MW |
1.0 / 1.25 / 1.6 MPa |
95/70, 115/70, 130/70°C |
>96% |
75.3 m³/h |
5.3 t |
|
WNS1.4-1.0/95/70-Q |
1.4 MW |
1.0 / 1.25 / 1.6 MPa |
95/70, 115/70, 130/70°C |
>96% |
153.7 m³/h |
6.8 t |
|
WNS2.1-1.0/95/70-Q |
2.1 MW |
1.0 / 1.25 / 1.6 MPa |
95/70, 115/70, 130/70°C |
>96% |
230.1 m³/h |
8.9 t |
|
WNS2.8-1.0/95/70-Q |
2.8 MW |
1.0 / 1.25 / 1.6 MPa |
95/70, 115/70, 130/70°C |
>96% |
306.2 m³/h |
10.3 t |
|
WNS4.2-1.0/95/70-Q |
4.2 MW |
1.0 / 1.25 / 1.6 MPa |
95/70, 115/70, 130/70°C |
>96% |
459.3 m³/h |
12.2 t |
|
WNS5.6-1.0/95/70-Q |
5.6 MW |
1.0 / 1.25 / 1.6 MPa |
95/70, 115/70, 130/70°C |
>96% |
612.1 m³/h |
18.0 t |
|
WNS7.0-1.0/95/70-Q |
7.0 MW |
1.0 / 1.25 / 1.6 MPa |
95/70, 115/70, 130/70°C |
>96% |
763.8 m³/h |
21.1 t |
|
WNS10.5-1.0/95/70-Q |
10.5 MW |
1.0 / 1.25 / 1.6 MPa |
95/70, 115/70, 130/70°C |
>96% |
1170.1 m³/h |
29.5 t |
|
WNS14-1.0/95/70-Q |
14.0 MW |
1.0 / 1.25 / 1.6 MPa |
95/70, 115/70, 130/70°C |
>96% |
1500.6 m³/h |
37.2 t |
Three-Pass Fire-Tube Boiler Design
First Pass — Furnace
Fuel is burned inside the corrugated furnace. Radiant heat is transferred directly through the furnace wall to the surrounding water. The corrugated design also accommodates thermal expansion during operation.
Second Pass — Smoke Tubes
After leaving the furnace, the flue gas reverses through the wet-back turnaround chamber and enters the first smoke-tube bundle. The water-cooled rear turnaround helps reduce heat loss and thermal stress.
Third Pass — Final Heat Transfer
The flue gas reverses again at the front smoke box and passes through the second tube bundle before leaving the boiler. An economizer can be added where additional flue-gas heat recovery is required.
The boiler control system combines automatic combustion management with independent safety protection.
Continuous Monitoring
The control interface can monitor:
Water temperature
System pressure
Flue gas temperature
Burner status
Boiler operating status
Alarm conditions
Safety Protection
Typical safety functions include:
Dual over-pressure relief protection
Low and ultra-low water level alarm and shutdown
High flue gas temperature shutdown
Flame failure detection
Burner emergency shutdown
Automatic fault alarms
Interlocked start-up and shutdown sequences
We work with EPC contractors, mechanical contractors, distributors, consultants, and end users during boiler selection and system design.
Boiler Selection
We review heating capacity, supply/return temperatures, working pressure, fuel type, and load profile to determine a suitable boiler configuration.
System Configuration
We can assist with the selection of burners, pumps, economizers, water treatment, controls, chimney systems, and other auxiliary equipment.
Technical Documentation
Project documentation can include
Boiler datasheet
General arrangement drawing
P&ID
Electrical drawings
Control specifications
Installation instructions
Operation & maintenance manual
Inspection and test documents
Spare parts recommendations
Commissioning Support
Remote or on-site technical support can be arranged according to project scope and installation requirements.
Applications
Food & Beverage Processing
Hot water for process heating, cleaning, sanitation, and wash-down in breweries, dairies, food plants, and commercial kitchens.
Greenhouse & Agricultural Heating
Continuous hot-water circulation for stable temperature control in commercial greenhouses and agricultural facilities.
Textile & Industrial Laundry
Reliable hot water for washing, dyeing, finishing, and cleaning in textile mills and industrial laundries.
Chemical & Pharmaceutical Processing
Controlled hot water for jacketed vessels, heat exchangers, and temperature-sensitive process applications.
Quality Control
Raw Material Inspection
Steel plates, tubes, and pressure-bearing materials are checked for chemical composition, mechanical properties, dimensions, and material documentation.
Pressure-Part Welding
Pressure-bearing components are fabricated using qualified welding procedures and controlled welding processes.
Non-Destructive Testing
Inspection methods are selected according to component requirements and applicable standards, including:
Radiographic Testing (RT)
Ultrasonic Testing (UT)
Visual inspection
Dimensional inspection
Hydrostatic Testing
Completed pressure parts are hydrostatically tested according to applicable design and inspection requirements to verify pressure integrity before shipment.
Final Inspection
Before delivery, key dimensions, connections, safety devices, control functions, documentation, and project-specific requirements are checked.
Manufacturing Capability
Production Area: 69,000 m² manufacturing facility supporting pressure vessel, boiler, and industrial equipment production.
Heavy Machining Equipment: Automatic submerged arc welding (SAW) machines, CNC plasma cutting tables, 100mm plate rolling machines, and indoor dust-free vacuum filling rooms.
FAQ
With abundant experience, we are one of the most reliable hot water boiler manufacturers and suppliers in China. We warmly welcome you to buy durable hot water boiler made in China here from our factory. If you have any enquiry about cooperation, please feel free to email us.
