FIXED CONNECTION Russian patent published in 2014 - IPC F16L47/00 F16L13/10 F16B7/00 

FIELD: machine building.

SUBSTANCE: invention relates to machine building industry and can be used in structures of piping using pipes from composite materials, and namely fiberglass ones. A fixed connection includes a pipe from composite materials and a metal mating part consisting of a thick-wall ring and two cylindrical belts with slots so that petals are formed. Ring and belts form a single internal cylindrical surface equal to outer surface of the pipe and combined with it. On outer surface of cylindrical belts there located is at least one layer of composite material, which cover slots, reduce petals in size and led to pipe surface so that internal annular supporting projections are formed along external edges of the belts. A pitch of slots located along perimeter of belts is chosen from the range of (0.1-0.2)D, and thickness of belts at the base of slots is chosen from the range of (0.005-0.01)D, where D - diameter of inner cylindrical surface of belts.

EFFECT: invention allows simplifying the structure and improving its reliability.

8 cl, 2 dwg