“gas boiler efficiency”- related parts

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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.
Convection tube 2018-07-12
It is the main heat transfer component of the water tube boilers, the convection tube of the Zozen Boiler is formed by the automatic bending of the CNC bending machine to ensure the consistency of each tube.
Explosion door 2018-07-12
The safety device of gas-fired boilers to prevent the furnace to be damaged