Engineering features
- Integrated burner and boiler control
- Wet-back and project-specific boiler arrangements
- Feedwater and water-treatment integration
- Economizer and condensate-recovery options
Steam Boiler
Industrial steam generation with compact integration, automated control and project-specific auxiliary systems.

System overview
JIELI THERMAL gas and oil-fired steam boilers are supplied for industrial process steam applications. Each system can be configured with burner, feedwater, water treatment, control, economizer and condensate-recovery equipment according to the project.
Real equipment gallery
23 real JIELI THERMAL photos from our manufacturing and project archive. Select any image for a closer view.
Technical parameters
The table below is translated from the technical data supplied for this product family. Final selection is confirmed against your fuel, operating conditions and project requirements.
| Technical parameter | Unit | WNS1 | WNS2 | WNS3 | WNS4 | WNS5 | WNS6 | WNS8 | WNS10 | WNS12 | WNS15 | WNS20 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rated evaporation capacity | t/h | 1 | 2 | 3 | 4 | 5 | 6 | 8 | 10 | 12 | 15 | 20 |
| Rated working pressure | MPa | 1.0 / 1.25 / 1.6 / 2.0 / 2.5 | ||||||||||
| Steam temperature | °C | Saturated steam temperature | ||||||||||
| Feedwater temperature | °C | 20 (105) | ||||||||||
| Burner regulation | — | Hi-low-off | Hi-low-off | Hi-low-off | Hi-low-off | Hi-low-off | Proportional | Proportional | Proportional | Proportional | Proportional | Proportional |
| Thermal efficiency | % | ≥95 | ||||||||||
| Available fuel | — | Natural gas, diesel or heavy fuel oil | ||||||||||
| Overall length | mm | 3586 | 4334 | 4958 | 5458 | 5716 | 6316 | 6429 | 7223 | 8129 | 8872 | 9200 |
| Overall width | mm | 2466 | 2637 | 2721 | 2721 | 3190 | 3190 | 3273 | 3273 | 3273 | 3650 | 3780 |
| Overall height | mm | 2885 | 3109 | 3287 | 3287 | 3924 | 3456 | 4344 | 4350 | 4322 | 4440 | 4820 |
Values are translated from the supplied technical parameter sheets and are intended for preliminary selection. Product data may be updated as designs evolve; final performance, dimensions and configuration are subject to the confirmed technical proposal.
Selection starts with data
Tell us the operating temperature or steam pressure, load profile, fuel condition, site arrangement and the process being heated. We will use those inputs to shape the equipment and system proposal.
Start a project
Share your fuel, required capacity, operating conditions and project location. Our team will help shape the boiler and the complete system around your actual production requirements.