Our main services
While we provide mature technology products, we will also provide high-quality technical services. We will give full play to our advantages and better serve our customers.
You can get in touch with us through online communication, message, email, service call, etc. We will respond quickly to your needs and provide corresponding purchasing instructions.More ...
Analysis of demand
Gain insight into the real and potential needs of your customers. If you need it, we will send professional engineers to the project site for free, according to local conditions, to help you analyze the equipment footprint, site space planning and so on.More ...
According to the user's demand for production capacity, raw materials and investment cost budget, the professional engineering team of our company's technology center integrates individualized resources, tailoring suitable and economical design solutions for customers to ensure that customers obtain effective value.More ...
Lifetime Guarantee Service
In addition to the product quality assurance period, our company still undertakes the obligation of after-sales service, that is, to provide customers with product sets and accessories to solve problems for customers.More ...
Advantages of working with us:
We are to be marked oriented,useing technology for development,to survive with quality,to benefit from service.
ZOZEN is one of the best modern boiler manufacturers in China.
Our products have been sold to more than 100 countries and regions and set up offices in many countries to ensure that they serve customers at the first time.
ZOZEN boiler covers an area of 150 thousand square meters, with an annual production capacity of 2000 industrial boilers and 25000 tons of steam.
Awards & Honors
ZOZEN is an AQSIQ approved boiler and pressure vessel manufacturer. We hold the ASME "S" and "U" Certificates and have earned ISO9001:2000 Certification.
ZOZEN is located in Wuxi，Wuxi is an important modern industrial city in China . It is only about 100 kilometers away from ShangHai.
Solutions & Services
We know what you demand，our service network is all over the world，full service makes your boiler operation more economical
Focus on customer success,Trustworthiness and integrity,Pursuit of truth and accuracy,Pioneering and innovative
Customer first,Service oriented
Create value for customers,Provide opportunities for employees
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Our Construct Company
Our History and Our Mission
After 30 years of rapid growth, ZOZEN now takes lead in China's boilers industry. We aim to offer maximum satisfaction to our valued customers. Our vision is to earn a global name in the boilers industry through continuous efforts of research and innovation.
We supply to over 100 countries and regions and have set up offices around the world to ensure prompt delivery of products and services.
Annual production (boiler tonnage)
Our future is in the world,and thanks world's ZOZEN.
Numbers of ZOZEN made
6Fully automatic production lines
make boiler components of consistent size and quality.
Seven hold points, each under the surveillance of a dedicated team, are set to assure product quality in the manufacturing process.
<30 DaysDelivery period
We use a great variety of automated and digital equipment, keep substantial stock of semi-finished products and maintain reliable relationship with our suppliers. As such, we are able to deliver packaged boilers within 30 days.
Frequently asked questions
Question details (Performance):
Water pumps do not absorb water.
The hands of the pressure gauge and the vacuum gauge beat violently.
Answer: Fault reason:
The water injected into the pump is not enough.
Air leakage of water pump or instruments.
Add water to the pump.
Tighten or block the air leakage.
Answer: Fault reason:
(1) Insufficient air volume, improper air distribution, low furnace temperature: boiler usually equipped with air preheater, but when the air preheater has leakage, hot air flow doesn't satisfy the need of burning, smoke will happen.
(2) In the case of stalling situation in full automatic oil-fired boiler: significant increase of furnace negative pressure, no flame can be seen from the inspection hole, steam pressure and steam temperature drop, the steam flow decreases sharply. The water level drops suddenly and then rises sharply.
(1) Timely and appropriately feed into the root air inlet, adjust the primary and secondary air, mix oil mist and air correctly, and prevent hypoxia.
(2) Avoid excessive discharge, leading to insufficient oxygen intake and insufficient combustion.
1. The fire grate is damaged and needs to be replaced.
2. There are excessive gaps of fire grate, which need to be adjusted.
3. The proportion of coal powder is too high. The coal need to be screened.
1. High temperature of motor, fast temperature rise.
2. Overload, high outlet pressure and frequent safety valve open often.
3. The vibration is intensified, the side vibration of the fan motor coupling is large, and the fan body never vibrates to vibration.
4. No obvious vibration was found in no-load test of fan motor.
The wall thickness of several boiler tubes was significantly reduced in a large area, the remaining wall thickness was 2.0mm, and some furnace tubes were corroded and worn out. Furnace tube wall is covered with a thick layer of uneven scale, the surface of the scale is brick red and black, scale layer is loose, and it is easy to remove the inner wall of the furnace tube, after removing, the furnace tube wall covered with a layer of corrosion pits. There is a thin layer of brick red corrosion on the outer wall of boiler tube, some of which are attached with black adhesive.