Products · 7 series · 54 models

Gas-fired / Oil-fired Boilers

Clean, high-efficiency steam and hot water from natural gas, diesel or heavy oil.

WNS Series Steam BoilerSteam

WNS Series Steam Boiler

Fire-tube, three-pass, wet-back

The workhorse packaged steam boiler — compact, fast-starting and highly efficient.

Capacity

1–20 t/h

Pressure

0.7–2.0 MPa

Efficiency

up to 98%

Fuel

Natural gas, Diesel, Heavy oil

  • Condensing economizer
  • Low-NOx burner options
  • Fully packaged delivery
View all 9 models(WNS1-1.25-Y.Q … WNS20-1.25-Y.Q)
ModelRated capacityPressure options
WNS1-1.25-Y.Q1 t/h1.0 / 1.25 / 1.6 / 2.0 MPa
WNS2-1.25-Y.Q2 t/h1.0 / 1.25 / 1.6 / 2.0 MPa
WNS3-1.25-Y.Q3 t/h1.0 / 1.25 / 1.6 / 2.0 MPa
WNS4-1.25-Y.Q4 t/h1.0 / 1.25 / 1.6 / 2.0 MPa
WNS6-1.25-Y.Q6 t/h1.0 / 1.25 / 1.6 / 2.0 MPa
WNS8-1.25-Y.Q8 t/h1.0 / 1.25 / 1.6 / 2.0 MPa
WNS10-1.25-Y.Q10 t/h1.0 / 1.25 / 1.6 / 2.0 MPa
WNS15-1.25-Y.Q15 t/h1.0 / 1.25 / 1.6 / 2.0 MPa
WNS20-1.25-Y.Q20 t/h1.0 / 1.25 / 1.6 / 2.0 MPa

Indicative model list based on the global ZOZEN lineup — final selection and specs are confirmed by our engineers.

SZS Series Steam BoilerSteam

SZS Series Steam Boiler

Water-tube, D-type, double drum

High-capacity, high-pressure steam for large plants, utilities and process industries.

Capacity

2–110 t/h

Pressure

1.25–5.3 MPa

Efficiency

up to 98%

Fuel

Natural gas, Diesel, Heavy oil

  • Membrane water wall
  • High steam quality
  • Wide capacity range
View all 10 models(SZS4-1.6-Y.Q … SZS110-1.6-Y.Q)
ModelRated capacityPressure options
SZS4-1.6-Y.Q4 t/h1.25 / 1.6 / 2.5 / 3.82 / 5.3 MPa
SZS6-1.6-Y.Q6 t/h1.25 / 1.6 / 2.5 / 3.82 / 5.3 MPa
SZS10-1.6-Y.Q10 t/h1.25 / 1.6 / 2.5 / 3.82 / 5.3 MPa
SZS15-1.6-Y.Q15 t/h1.25 / 1.6 / 2.5 / 3.82 / 5.3 MPa
SZS20-1.6-Y.Q20 t/h1.25 / 1.6 / 2.5 / 3.82 / 5.3 MPa
SZS25-1.6-Y.Q25 t/h1.25 / 1.6 / 2.5 / 3.82 / 5.3 MPa
SZS35-1.6-Y.Q35 t/h1.25 / 1.6 / 2.5 / 3.82 / 5.3 MPa
SZS50-1.6-Y.Q50 t/h1.25 / 1.6 / 2.5 / 3.82 / 5.3 MPa
SZS75-1.6-Y.Q75 t/h1.25 / 1.6 / 2.5 / 3.82 / 5.3 MPa
SZS110-1.6-Y.Q110 t/h1.25 / 1.6 / 2.5 / 3.82 / 5.3 MPa

Indicative model list based on the global ZOZEN lineup — final selection and specs are confirmed by our engineers.

WNS Skid-mounted Steam BoilerSteam

WNS Skid-mounted Steam Boiler

Fire-tube, skid-packaged

Boiler, pumps and controls pre-mounted on one skid — install and commission in days.

Capacity

1–4 t/h

Pressure

1.0–1.6 MPa

Efficiency

up to 98%

Fuel

Natural gas, Diesel

  • All-in-one skid
  • Minimal site work
  • Fast commissioning
View all 4 models(WNS1-1.0-Y.Q(Q) … WNS4-1.0-Y.Q(Q))
ModelRated capacityPressure options
WNS1-1.0-Y.Q(Q)1 t/h1.0 / 1.25 / 1.6 MPa
WNS2-1.0-Y.Q(Q)2 t/h1.0 / 1.25 / 1.6 MPa
WNS3-1.0-Y.Q(Q)3 t/h1.0 / 1.25 / 1.6 MPa
WNS4-1.0-Y.Q(Q)4 t/h1.0 / 1.25 / 1.6 MPa

Indicative model list based on the global ZOZEN lineup — final selection and specs are confirmed by our engineers.

ZZ Series Power Plant Steam BoilerSteam

ZZ Series Power Plant Steam Boiler

Water-tube, power generation

Utility-grade steam for captive power and combined heat & power plants.

Capacity

20–130 t/h

Pressure

3.82–5.4 MPa

Fuel

Natural gas, Heavy oil

  • Superheated steam
  • CHP-ready
  • Utility-grade controls
View all 8 models(ZG20-3.82-Q … ZG130-3.82-Q)
ModelRated capacityPressure options
ZG20-3.82-Q20 t/h3.82 / 5.4 MPa
ZG35-3.82-Q35 t/h3.82 / 5.4 MPa
ZG50-3.82-Q50 t/h3.82 / 5.4 MPa
ZG65-3.82-Q65 t/h3.82 / 5.4 MPa
ZG75-3.82-Q75 t/h3.82 / 5.4 MPa
ZG90-3.82-Q90 t/h3.82 / 5.4 MPa
ZG110-3.82-Q110 t/h3.82 / 5.4 MPa
ZG130-3.82-Q130 t/h3.82 / 5.4 MPa

Indicative model list based on the global ZOZEN lineup — final selection and specs are confirmed by our engineers.

WNS Series Hot Water BoilerHot water

WNS Series Hot Water Boiler

Fire-tube, three-pass

Stable, efficient hot water for hotels, hospitals and district heating.

Capacity

0.7–14 MW

Pressure

0.7–1.25 MPa

Efficiency

up to 98%

Fuel

Natural gas, Diesel

  • Quiet operation
  • Full automation
  • Condensing recovery
View all 9 models(WNS0.7-1.0/95/70-Y.Q … WNS14-1.0/95/70-Y.Q)
ModelRated capacityPressure options
WNS0.7-1.0/95/70-Y.Q0.7 MW0.7 / 1.0 / 1.25 MPa
WNS1.4-1.0/95/70-Y.Q1.4 MW0.7 / 1.0 / 1.25 MPa
WNS2.1-1.0/95/70-Y.Q2.1 MW0.7 / 1.0 / 1.25 MPa
WNS2.8-1.0/95/70-Y.Q2.8 MW0.7 / 1.0 / 1.25 MPa
WNS4.2-1.0/95/70-Y.Q4.2 MW0.7 / 1.0 / 1.25 MPa
WNS5.6-1.0/95/70-Y.Q5.6 MW0.7 / 1.0 / 1.25 MPa
WNS7-1.0/95/70-Y.Q7 MW0.7 / 1.0 / 1.25 MPa
WNS10.5-1.0/95/70-Y.Q10.5 MW0.7 / 1.0 / 1.25 MPa
WNS14-1.0/95/70-Y.Q14 MW0.7 / 1.0 / 1.25 MPa

Indicative model list based on the global ZOZEN lineup — final selection and specs are confirmed by our engineers.

SZS Series Hot Water BoilerHot water

SZS Series Hot Water Boiler

Water-tube, D-type

Large-scale hot water supply for district heating networks and campuses.

Capacity

7–116 MW

Pressure

1.0–1.6 MPa

Fuel

Natural gas, Diesel, Heavy oil

  • Very large capacities
  • High thermal efficiency
  • Long service life
View all 10 models(SZS7-1.0/115/70-Y.Q … SZS116-1.0/115/70-Y.Q)
ModelRated capacityPressure options
SZS7-1.0/115/70-Y.Q7 MW1.0 / 1.25 / 1.6 MPa
SZS10.5-1.0/115/70-Y.Q10.5 MW1.0 / 1.25 / 1.6 MPa
SZS14-1.0/115/70-Y.Q14 MW1.0 / 1.25 / 1.6 MPa
SZS17.5-1.0/115/70-Y.Q17.5 MW1.0 / 1.25 / 1.6 MPa
SZS29-1.0/115/70-Y.Q29 MW1.0 / 1.25 / 1.6 MPa
SZS46-1.0/115/70-Y.Q46 MW1.0 / 1.25 / 1.6 MPa
SZS58-1.0/115/70-Y.Q58 MW1.0 / 1.25 / 1.6 MPa
SZS70-1.0/115/70-Y.Q70 MW1.0 / 1.25 / 1.6 MPa
SZS91-1.0/115/70-Y.Q91 MW1.0 / 1.25 / 1.6 MPa
SZS116-1.0/115/70-Y.Q116 MW1.0 / 1.25 / 1.6 MPa

Indicative model list based on the global ZOZEN lineup — final selection and specs are confirmed by our engineers.

WNS Skid-mounted Hot Water BoilerHot water

WNS Skid-mounted Hot Water Boiler

Fire-tube, skid-packaged

Plug-and-play hot water — the whole plant room arrives on one frame.

Capacity

0.7–2.8 MW

Pressure

1.0 MPa

Fuel

Natural gas, Diesel

  • Pre-piped & pre-wired
  • Small footprint
  • Rapid deployment
View all 4 models(WNS0.7-1.0/95/70-Y.Q(Q) … WNS2.8-1.0/95/70-Y.Q(Q))
ModelRated capacityPressure options
WNS0.7-1.0/95/70-Y.Q(Q)0.7 MW1.0 MPa
WNS1.4-1.0/95/70-Y.Q(Q)1.4 MW1.0 MPa
WNS2.1-1.0/95/70-Y.Q(Q)2.1 MW1.0 MPa
WNS2.8-1.0/95/70-Y.Q(Q)2.8 MW1.0 MPa

Indicative model list based on the global ZOZEN lineup — final selection and specs are confirmed by our engineers.

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