... public bathroom, swimming pool, kindergarten, nursery, old people's home of the family, etc. To use, it is still ... : 1. Cut pipes: Cutting the length needed of the pipe, the notch should be perpendicular to the ... no burr, keep clean. Establish the suitable length of welding on the pipe. 2. Heat melts the ... pipe, it is hot to melt mould hair of welder reach the suitable density for pipe fittings to ...