A process for the preparation of a connection of two high-grade steel pipes, tube adaptor for the application of the process and a connector assembly of the high-grade steel pipes

摘要

A process for the production of a connection of two high-grade steel pipes (1, 2), which is characterized by the following process steps:-Welding on a first part (3) of a two-part tube adapter (4) to a free end (5) of a first special steel pipe (1),-Welding of the second part (6) of the tube adapter (4) at the free end (7) of the with the first special steel pipe (1) to be connected, second special steel pipe (2),-Pushing a collar (8) on a portion of the separated from one another in a tube adaptor parts (3, 6),-Production of a screw connection (9) between the tube adapter parts (3, 6),-axial displacement of the sleeve (8) along the outer surface (10) of the tube adapter (4), to which at the tube adapter parts (3, 6), which is present, by means of threaded connection (9) forming a composite contact surfaces (11) completely from the sleeve (8) are covered,-Welding of the sleeve (8) with the tube adapter parts (3, 6) along the circumference of the outer surface (10) of the tube adapter (4).In addition, a tube adaptor (4) for connecting two high-grade steel pipes (1, 2) and a connecting arrangement of two described high-grade steel pipes.n="20"