FIELD: pipeline transportation, possible use during assembly of pipelines having internal cover.
SUBSTANCE: during connection of pipes, junction of metallic pipes with internal cover is pinned on sealing bushing, crimping cylindrical sleeve is mounted on the junction of pipes on external side, and the sleeve is reduced from one end of sleeve to another one. External surface of sealing bushing is made uneven, with height of unevenness shelves ranging from 0,05 to 0,5 of thickness of internal cover of metallic pipes. External surface of sealing bushing is made with deviation from the middle with diameter on ends of bushing 0,5-5% less than diameter in the middle of bushing.
EFFECT: increased reliability of pipes connection.
1 dwg
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