Simple and easy built -in fitting of prefabricated underground pipe gallery

The utility model belongs to the technical field of the engineering construction and specifically relates to a simple and easy built -in fitting of prefabricated underground pipe gallery, this built -in fitting of characterized in that comprises crab -bolt, C shaped steel and T type bolt: C shaped steel bottom both ends set up the through -hole, and it is protruding that C shaped steel outside through -hole edge sets up the ring dress, the crab -bolt is passed C shaped steel bottom through -hole and is welded with C shaped steel is inboard, the crab -bolt bottom sets up the crab -bolt head, Cshaped steel both sides end sets up the anastomotic rectangular buckle board of shape with it, buckle central authorities are sunken in to C shaped steel, put into in the C shaped steel T type the bolt head and with C shaped steel in all the other positions pack expanded plastics, respectively setting up round pad circle and spring washer with the inside and outside side of C shaped steel along Ttype bolt, with rubber bon