| abstract |
The present invention discloses an air exhaust or air-and-smoke exhaust pipe for a clean room and a manufacturing method therefor. The pipe is a pipe that satisfies FM4922, FM4910, or another equivalent standard and that is used for exhausting a nonflammable chemical gas and corrosive vapor or a nonflammable chemical gas and corrosive vapor and smoke in fire. The manufacturing method for the pipe is: coating an inner part of a pre-manufactured metal pipe with a liquid coating that can be initially dried at normal temperature or low temperature; and baking the pipe at a temperature not exceeding 250℃ after the coating is initially dried, so that the coating is completely dried to obtain a finished product. |