“two pass boiler”- related parts

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Hood 2018-07-12
It is used for fluidized bed boilers, there are two types of sizes. Due to used for different locations, the diameter and size of the holes in the hoods are different.
Adjustment device 2018-07-12
Device for adjusting the incoming air volume of grate
Serpentine tube 2018-07-12
It’s the main heat transfer part of economizer or condenser, it uses different materials due to the different nature of smoke.