FLUSH FIELD JOINT

A method of coating a field joint, pipe sections (2, 4) for forming a coated field joint, and a coated field joint formed thereby. First (102) and second angular cut backs (104) are provided in the parent coating (10) of each pipe section (2, 4). The first angular cut back (102) is at an angle of ab...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: SKINSTAD, MAGNE, WRIGHT, ADAM, USTAD, OLE THOMAS
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:A method of coating a field joint, pipe sections (2, 4) for forming a coated field joint, and a coated field joint formed thereby. First (102) and second angular cut backs (104) are provided in the parent coating (10) of each pipe section (2, 4). The first angular cut back (102) is at an angle of about 30? ? 5? relative to the longitudinal axis (L) of the field joint, and the second angular cut back (104) is positioned further from the field joint than the first angular cut back (102). The first (102) and second angular cut backs (104) result in the parent coating (10) having a stepped profile, a step (106) in the stepped profile between the first (102) and second angular cut backs (104), the is substantially parallel to the longitudinal axis (L) of the field joint and is free of indentations. The field joint coating (108) is injection moulded to have an upstand (110) that is less than or equal to about 5mm. FIG. 2