PVC plastic pipe in the underground kind, to reduce the size of what you need, pipe hoop and flange is not a thing?

The reducer, now on the market have ready-made reducer joints, plastic pipe size different reducer joint structure is not quite the same. Pipe clamps and flanges are not a thing. Pipe clamps are commonly known as pipe clamps, generally used as a fastener to connect the temporary hose, can also be used as a temporary plugging fasteners. Flanges are also called flanges or flanges. Flanges are parts that interconnect pipes to each other and are attached to the end of the pipe. Flange connection or flange joint, refers to the flange, gasket and bolt three interconnected as a group of combined sealing structure of the detachable connection, pipeline flange refers to the piping device in the piping with the flange, used in equipment refers to the import and export flange of the equipment. There are holes on the flange, and the bolts make the two flanges tightly connected. The flanges are sealed with gaskets. Flanges are divided into threaded flanges and welded flanges.