F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
F16L13/00—Non-disconnectable pipe joints, e.g. soldered, adhesive, or caulked joints
F16L13/007—Non-disconnectable pipe joints, e.g. soldered, adhesive, or caulked joints specially adapted for joining pipes of dissimilar materials
Verfahren zum festen und dichten Befestigen eines hohlen, zylindrischen Elementes in das Innere eines Rohres und zylindrisches Element zur Durchführung dieses Verfahrens
Methods for welding two metal pieces of tubing with their ends to each other and to pipe-lines consisting of pieces of tubing thus welded to each other