A low-pressure tubular system includes a multitude of interconnected tube sections having a longitudinal axis. Each of the tube sections includes a central part and two outer end parts. The tubular system is configured to maintain a low-pressure environment within the connected tube sections. The system further includes a multitude of expansion joints connecting the tube sections. Each of the expansion joints includes a sleeve made of a flexible sheet material and includes a ring shaped endless central part and two ring shaped endless outer end parts. Each of the outer end parts of the expansion joints are arranged to extend coaxial with an adjacent tube section and surround and sealingly engage the outer end part of said adjacent tube section.

The present disclosure discloses a telescopic water pipe, including a first connector, a second connector, and an outer sleeve. Two ends on a left side and a right side of the outer sleeve are respectively connected to the first connector and the second connector. A corrugated pipe is also placed in the outer sleeve. A left end and a right end of the corrugated pipe are respectively connected to the first connector and the second connector. The outer sleeve includes a woven tape and elastic filaments. The woven tape and the elastic filaments are seamlessly woven into the outer sleeve. When water passes, the outer sleeve and the corrugated pipe extend horizontally to both sides. The present disclosure has the advantages of simple structure, convenience in use, high water pressure resistance, and capability of prolonging the service life.

An expansion joint is formed from a plurality of layers comprising a ring tie-in ply, a pair of arch rings at opposing transition points, two body plies, with inverted bias cut angles between about 48 to 60, where about is typically plus or minus 1 degree. The arch geometry is such that the arch has an axial length C between the transition points and an inner surface arch circumference length of A between the transition points in a neutral state, such that the maximum compression distance for the expansion joint is the length C, the maximum elongation distance for the expansion joint is a length (AC), and a maximum lateral deflection length for the expansion joint is a length Y.