The connection method of glass fiber reinforced plastic pipeline construction usually has the flange connection, the casing connection, the socket connection, the flat joint and the screw connection. Glass fiber reinforced plastic pipe before installation, the glass fiber reinforced plastic pipe and its accessories, and other materials to be checked to confirm that the material meets the design requirements, quality can be installed after the installation. The surface of the glass tube should be smooth, not allowed to play, but are allowed to have a glass of wax formed by Butuo color shades and bubble and wrinkling.
There are a lot of glass fiber reinforced plastic pipe is used in the underground pipeline, of course, some of the pipeline under the span of the problem is relatively long span.
Underground pipe is a tube frame, hanger, bracket for supporting the supporting points of the distance between the two is called the pipeline span, the span of course not too it will affect the normal work of the pipeline, if the span is too small, this will make the pipeline arrangement more intensive, and the investment cost on the corresponding increase, because of pipeline the amount of increase, in this regard, in order to ensure pipeline safety and normal operation, of course, as far as possible to expand the span of the pipeline. Under the action of external load, the maximum stress of the pipe interface should not exceed the allowable stress of FRP pipe.