As for ventilation pipes, they are all pipes, but the difference can be seen from the name and function. The air is ventilated and the air in the room is kept clear, so the ventilation pipe is the pipe that can supply air or exhaust air for the room or equipment. The smoke exhaust pipe is specially used for flue gas emission.
When the air duct is extended into the air duct of the structure, the steel plate net shall be installed at the end of the air duct to prevent the sundries from entering the metal air pipe when the system is running. The gap between the metal duct and the structural duct should be tightly sealed. When the wind pipe passes through the settlement joint, the casing shall be added according to the design requirements, and the gap between the sleeve and the air duct shall be sealed tightly with filler (soft), and from these characteristics we shall be able to distinguish the two areas very quickly.
Although often use galvanized sheet, smoke pipe with high temperature resistance, higher requirements for fire resistance; building design, exhaust pipe and galvanized iron sheet thickness is chosen according to high standards, general ventilation system is in accordance with the selection of low-voltage system; if not the air conditioning duct, ventilation pipeline do not need to exhaust air duct insulation, if indoor installation, general insulation treatment.
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