PIPE STRUCTURAL BODY MADE OF SYNTHETIC RESIN

PROBLEM TO BE SOLVED: To provide a pipe structural body made of a synthetic resin in which a linear tightening means reaches a bolt inserting hole at a specific position, wherein a tightening operation of a bolt inserted in the bolt inserting hole at the specific position is made easy, and the tightening force of the bolt is made strong. SOLUTION: When two pipes 14b and 14c are arranged in the vicinity of an extension line of an axis 18 of a bolt inserting hole 16A at a specific position among a plurality of bolt inserting holes 16 of a flange 12, one pipe 14b is arranged so as to be spaced from the other pipe 14b in an approximately perpendicular direction to a melt-and-adhere vibrating direction line G-G, and further, the pipes 14b and 14c are not overlapped in a direction perpendicular to the melt-and-adhere vibrating direction line G-G. Thus, a gap space 38 is formed for inserting a tightening means 40 for tightening a bolt 58 in the vicinity of the extension line of the axis 18 of the bolt inserting hole 16A at the specific position. As a result, the bolt 58 inserted in the inserting hole 16A at the specific position is tightened by using the linear tightening means 40. COPYRIGHT: (C)2009,JPO&INPIT