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. Generally referred to as air preheater. It is mostly used for coal-fired power station boilers. It can be divided into pipe box type and rotary type, of which the rotary type is divided into hood rotary type and heating surface rotary type. Rotary preheater with heating surface is often used in utility boilers.
Shandong Yiming enamel tubular air preheater has the advantages of corrosion resistance, wear resistance, smooth surface, no ash blockage, small flow resistance, service life more than 5 times that of the original steel tube preheater, reasonable structure and convenient installation and maintenance. Welcome to Shandong Yiming.
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.
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.