Cut the pipe according to the required length, the end face of the cut pipe should be perpendicular to the axis of the pipe; remove the burrs and burrs on the cut end face; use a special chamfering machine, pour the pipe end into 15°~30°, and the bevel thickness is the pipe wall thickness 1/2~1/3 of the length of the pipe; use cotton yarn or dry cloth to clean the inner side of the socket and the outer side of the socket, and use detergent if necessary; the socket depth of the pipe fitting minus 10mm is the insertion length of the pipe, and this length is in Make a mark on the pipe; check and adjust the rubber sealing ring, and use a brush to evenly apply the lubricant on the surface of the rubber sealing ring and the outer surface of the pipe or fittings socket. It is forbidden to use butter or other oils as lubricants; insert the socket of the pipe or pipe fitting into the socket of the pipe fitting at a constant speed to the marking line. It must be kept vertical during insertion. If insertion is difficult, auxiliary instruments can be used.
