FIELD: process engineering.
SUBSTANCE: invention relates to construction of pipeline with internal coating with the help of welding. Claimed weld comprises the bushing of carbon steel covering said weld, seals and sealant arranged between the bushing inner ends and the ends of pipe. The bushing is pressed by the shell of rustproof steel clad from inside against the surface of one of the pipes by expansion while its circular ledge is arranged between the ends of pipes and welded to the pipes weld over the edges.
EFFECT: reliable locking of the bushing in the weld, reliable protection of said weld.
1 dwg
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