What is an air preheater?
Air preheater, also known as air preheater, is a preheating equipment to improve boiler heat exchange performance and reduce heat loss. The function of air preheater is to transfer the heat carried in the flue gas discharged from the flue at the tail of the boiler to the air before entering the boiler through the heat sink and preheat the air to a certain temperature.
The tubular air preheater is equipped with an intermediate tube plate in the tube box. The flue gas passes through the preheater up and down along the steel pipe, and the air passes through the preheater laterally to complete heat conduction.
Tubular air preheater has the advantages of good sealing, high heat transfer efficiency and easy manufacture and processing. Therefore, it is widely used in power station boilers and industrial boilers.
Advantages of enamel tube air preheater:
The electrostatic enamel tube air preheater of our company has effectively solved the above problems. It saves resources and improves economic benefits. Its advantages are as follows:
1, super corrosion resistance, the same coal quality can prolong the service life by more than 3 times.
2,smooth surface, not easy to accumulate dust, reduce blockage and enhance heat exchange effect.
3,it can reduce the exhaust temperature and improve the operation efficiency.
Benefits of Tubular Air Heaters
Tubular air heaters have a wide variety of benefits. Using these heaters results in lower fuel costs, since you have to burn less fuel to get air temperature to where it needs to be. Higher temperatures lead to better fuel consumption, which also leads to less ash.
Tubular air preheaters have a number of configurations:
A bundle of vertical tubes through which the flue gas flows downward  and exchanges heat with ambient air flowing horizontally across the exterior of the tubes.
A bundle of horizontal tubes through which the air flows and exchanges heat with the hot flue gas flowing downward across the tube bundle.
Manufacturing process:
Material→Ingot → Hot/Cold-Rolling→ Heat treatment(Normalizing+ tempering) → Inspection→Cutting→Pipe piercing→welding→Sealing test→Painting→Packaging

Q1:How long is the warranty period?
We provide 12 months warranty for all spare parts(exclude fragile parts).
Q2:How do you control the quality?
1) All YM machines are in strict accordance with the ISO quality and CE system requirements.
2)  All information of our products can be checked in efficient management system.
Q3:What certifications do you have?
All our products are CE and ISO9001 certified. Numerous design and innovation patent for all our current models and spare parts.
Q4:What kind of service do you provide?
Before sales:
Provide productinformations, market research forecasting, product customization,product processing,consultation and other services for your convenience.
After sales:
 1.  Technical training on according to customer requirements;
 2.  We promise replacement under warranty;
 3.  We promise to supply the maintenance spare parts; 
 4.  On time response to mail and phone calls of your  consultation.
Q5:Are you a factory or a trading company?, where are you?
We are a factory in Shandong, China.