Pipe connection

A pipe connection between a first and a second part, of which at least one part is a tubing means having an axis provided with an inclined wall portion formed by a flared lip extending at an angle to its axis, and of which the other part having an axis and including means near one end thereof providing at least one wall portion inclined at an angle to its axis which is at least approximately similar to said first angle, a short externally cylindrically shaped means internally bridging the connection and extending into said first-mentioned tubing means, and clamping ring means having an annular portion operable to be tightened by contraction in the radially inward direction, said clamping ring means having a ring axis and internal flanks at least partially defining an approximately U-shaped profile at its internal surface thereof in a cross-sectional plane containing the axis of said clamping ring means and substantially parallel thereof, the internal flanks of said clamping ring means being at least approximately complementary to and operable in the contracted condition of the ring means to engage with the inclined wall portions of said first and second part, so that, in the contracted condition of the clamping ring means, the inclined wall portions and therewith the first and second part are urged toward each other, and at least one substantially plastically deformbale lug-shaped ear means in the annular portion of the clamping ring means, said ear means being capable of plastic deformation to thereby tighten the clamping ring means by reducing its diametric dimension and to thereby securely urge the inclined wall portions of said first and second part toward each other to establish a permanent pipe connection safe against unintentional opening and capable of withstanding relatively high pressures and vibrations as well as temperature fluctuations which can be opened again only by destruction of the clamping ring means or its ear means, said U-shaped profile extending over at least the circumference of the annular portion of said clamping ring means, and said short externally cylindrically shaped means being constituted by said second part.