METHOD OF MANUFACTURE OF PIPE AND PIPE MANUFACTURED BY THIS METHOD Russian patent published in 2004 - IPC

Abstract RU 2230248 C2

FIELD: manufacture of double pipes. SUBSTANCE: proposed method includes manufacture of outer pipe from semi-finished product and forming hermetic inner layer in this pipe; outer pipe and inner layer are connected. Inner layer is also made from semi-finished product. EFFECT: enhanced efficiency and reliability. 18 cl, 8 dwg

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RU 2 230 248 C2

Authors

Jarvenkjulja Jjuri

Dates

2004-06-10—Published

1999-11-08—Filed