DZL series water-fire tube steam boiler
1. Airfoil flue desgin,Cool the high temperature tube sheet to avoid subcooled boiling,lower the head load of the boiler bottom,avoid the crack of the tube sheet,avoid the deformation of the bottom.
2. Arch tube desgin, make the tube sheet more flexible to lower the tube end weld heat stress. cancel bacing pieces to avoid the crack of tube sheet.
3. Spirally corrugated tube desgin,enhance heat transfer,reduce  the size of the pot, make it  more flexible to the tube end heat stress, avoid fouling,avoid the crack of tube sheet.

FAQ
Q1: Where is your company?
A1: We are located in qingdao which is famous for international business and international sea port, it’s east to delivery boiler to  Southeast Asia, Africa, Middle East, South America, Oceania and Europe.

Q2: What is the Warranty for the boilers?
A2: You will get eighteen months (18) warranty counting from the date of shipment or fourteen (14) months from the date of commissioning, whichever is earlier.

Q3: How about the installation and commissioning?
A3: We’ll specify the service clause for installation and commissioning in details. Generally, our products can be handled by end-users themselves with our documents provided or internet online assistance. However, our service team members also are available for travelling upon request from customers.

 Q4: What’s the production lead time for delivery?
A4: For our standard products, usually it will take about 35-45 days for pressure boilers, and 25-30 days for non-pressure boilers. For non-standard products, time will be different subject to the specifications of pressure, electricity, fuel, capacity, etc.

 Q5: What about your payment term?
A5: Our terms of payment is very flexible, we can discuss and meet your requirement. However, TT is the most welcome term and it has the priority to the price discount.

Q6: What kind of documents will be provided?
A6: Our documents include English instruction manuals, conformity certificate, drawings, manufacturing data, etc. More detailed documents can be provided upon request.

 Q7: What’s your MOQ?
A7: Only 1 set, if you have more than that, you will get a more favorable price.

 Q8: How’s the packaging & shipping
A8: For metal products like boiler body, steam header, tank, etc, they will be packed by stretch film; for accessories, they will be packed in wooden cases or carton boxes. We can handle all shipments including standard container, open top container, flat container, bulk carrier, etc. Because of big dimensions, not all boilers can be loaded into standard containers. For solid  fuel boilers, bigger than 2 ton/hr or 1.4 MW shall be shipped by frame rack (flat) container or bulk carrier.