The utility model relates to a flange, particularly to an aluminum-plastic co-extrusion spigot type compound wind pipe connection flange, which overcomes the shortcomings of the prior aluminum alloy flanges and PVC flanges, and utilizes the advantages of the prior aluminum alloy flanges and PVC ...
A bellmouth is formed at one end of the pipe material; a spigot capable of being connected with the bellmouth in a plugging manner is formed at the other end of the pipe material; an annular flange is arranged on the spigot; the spigot is connected with the bellmouth in a plugging ...