Jointing apparatus of steel ribbed pipes and method and apparatus for manufacturing of steel ribbed pipe flange

摘要

According to the present invention, the corrugated steel pipe connecting device is installed at each end of the corrugated steel pipes to be connected to each other, flanges made of a synthetic resin and formed with a plurality of engaging projections at predetermined intervals on the outer circumferential surface, one side of the flanges to be mutually coupled It is provided with a sealing member which is installed in the coupling means for providing mutual adhesion to the flanges by mutually coupling the engaging projection of the flanges to be coupled to each other. The flange of the corrugated steel pipe is integrally formed at the end of the corrugated steel pipe by the manufacturing apparatus.; Corrugated steel pipe, connection, flange, synthetic resin