PURPOSE: To facilitate assembly work providing non-screwing sections and pipe screwing female sections to the insides of one end of a pipe, and providing male screw sections screwing the pipe screwing female sections to an end cone to connect.
CONSTITUTION: Non-screwing sections 2 having non-screwing sections 2 to the insides of both ends of a pipe 1 and pipe screwing female screw sections 3 adjacent to the intermediate side of the pipe are formed in succession. After that, cylindrical bodies 18 are provided to the rear of an end cone 6 having a bolt inserting through-hole in the central part thereof, male screw sections 7 are provided to the rears of the outsides of the cylindrical bodies 18, and spring rear metal fixtures 20 are fixed to the rear ends of the cylindrical bodies 18 to form chord members 28. When the chord members 28 are used to build up a solid truss, a male screw 22 of a bolt 5 in the chord members 28 is contacted with a screw hole 25 of a node 4 to turn a turning cylinder body 14 and, at the same time, the bolt 5 is turned to screw the male screw 22 in the node 4. Accordingly, the solid truss can be assembled at a low cost.
TAKEUCHI TORU
KAWAMURA NORIHISA
