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  • SZL
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  • SZL

SZL Series Coal Fired Steam Boiler

  • Steam capacity 2t/h-20t/h
  • Steam Pressure 0.7Mpa-3.8Mpa
  • Fuel Coal/wood pellet/rice husk/ peat pellet/biomass
  • Application Heating Supply, Thermal Power Plant
  • Certification CE, SGS, BV, ISO9001, etc.

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SZL series water tube steam boiler  is designed by our engineer based on the advanced technology in domestic and international, which is the horizontal type double drum longitudinal type chain grate water tube boiler, it contains both steam generator and hot water boiler. This series boiler has reached the international advanced level on technology, performance, environment protection.

industrial horizontal type coal fired water tube steam boiler


This series steam boiler is widely used in industry and life where need steam and heating, such as textile plant, rice mill, garment factory, utility or power plant, hospital, hotel, etc. The relevant capacity hot water boiler is widely used in industry and heating for civil use.

Technical Advantages:
1. Furnace arch adopts advanced design, forming obvious inverse “α” flue gas flow, which makes the boiler strong adaptability.
2. Boiler’s back and forth arches are water-cooling “warm arch” structure, which can protect furnace arch.
3. Boiler adopts bilateral inlet air and independent plenum structure, can adjust blast capacity and wind pressure of each plenum, to ensure the burning effect.
4. Grate back-shaft adopts roller bearing structure, to avoid sliding bearing over-burning.
5. The bottom road rail of grate adopts light rail, which improve the operation’s reliability.
6. The length of grate is 500-1000mm longer than domestic, which enhance the thermal efficiency.
7. Boiler design adopts light furnace wall structure, which makes the absorbed heating capacity reduce and the boiler starts and stops quickly.


Model Rated evaporation capacity (t/h) Working
pressure (MPa)
Rated steam temperature/ outlet temperature(℃) Feed water temperature/ Return water temperature(℃) Overall dimension part for transportation L*W*H(mm)
SZL2-0.8/1.0/1.25/1.6/2.5-AII 2 0.8/1.0/1.25/1.6/2.5 175/184/194/204/226 20/70 5500×2350×3650
SZL4-1.0/1.25/1.6/2.5-AII 4 1.0/1.25/1.6/2.5 184/194/204/226 20/70 7730×2360×3520
SZL6-1.0/1.25/1.6/2.6-AII 6 1.0/1.25/1.6/2.5 184/194/204/226 20/70 up 6150×2840×3540 down 7275×2852×2580 
SZL8-1.0/1.25/1.6/2.7-AII 8 1.0/1.25/1.6/2.5 184/194/204/226 20/70 up 6971×2933×3540 down 8056×2945×2580 
SZL10-1.0/1.25/1.6/2.8-AII 10 1.0/1.25/1.6/2.5 184/194/204/226 20/70 up 7855×3240×3540 down 9025×3200×2580 
SZL15-1.0/1.25/1.6/2.9-AII 15 1.0/1.25/1.6/2.5 184/194/204/226 20/70 Up 10000×3240×3540 down 12000×3200×3080 
SZL20-1.0/1.25/1.6/2.10-AII 20 1.0/1.25/1.6/2.5 184/194/204/226 20/70 up 11000×3240×3540 down 14000×3200×3080 
Note: Parameter is for reference only, if any changes should follow the factory technical data.
Transaction Process
Customer Inquiry -- Offer Professional Consulting Service -- Place Order -- Customize Boiler Based on Customers’ needs --Production-manufacturing -- Payment -- Impeccable After Sale Service (installation and debugging, periodic maintenance, etc.)

Offered Technical Documentations
Installment and Operation Instruction
Quality Certificate
Inspection Certificate of Boiler quality
General Drawing of Boiler
Foundation Drawing
Boiler Body Drawing
Boiler Room Design Drawing
Drawing of Valves, Instruments and Accessories

Company Strength
Sitong boiler is a national approved and designated enterprise, with design and manufacture license permits of Class A boiler and D1, D2 pressure vessel. The company has passed ISO 9001 international quality system certification, and gained the international certificates of CE, SGS, and BV, etc. The boiler products are exported to more than 60 countries. The factory covers an area of 120 thousands㎡, equipped with plenty of international advanced manufacture equipment, such as CNC cutting machine, automatic submerged arc welding machine, X-ray detection machine, etc.
company strength of Sitong Boiler


Contact us now if you have any question about our company and products[email protected]. Any of your inquiry and suggestion will be highly appreciated. We will keep your information completely private.