FIELD: mechanical engineering. SUBSTANCE: pipes to be connected have the form of solid internal portions with circular projections extending outward; coupling member is made up of pipe sections interconnected by jointing surfaces. Each pipe section consists of pipe shell and pipe core with circular projections extending outward. Pipe core is accommodated in pipe shell and is rigidly secured therein. Pipes are connected by their butting surfaces. EFFECT: improved design. 11 cl, 17 dwg
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| ROAD SIGN FOR CONSTRUCTION SITES | 1990 |
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| DRAIN PIPE | 0 |
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| CONNECTION WITH MULTIPLICITY OF SEALS FOR VERTICAL PIPES OF IMMERSED WATER-SEPARATING STRING | 1994 |
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RU2117133C1 |
