To eliminate the welding work when two pipe line materials storing communication and power cables are connected and easily resolve a length shortage of a pipe line material and absorb the drift of the pipe line material in the axial direction when the pipe line material is connected to a manhole.
In this connecting joint structure for pipe line materials, the end section outer peripheries of the pipe line materials are pinched by a pair of joint base sections 31, 41, and fitting flange sections 32, 42 protruded to the outer directions of the pipe line materials are continuously extended respectively at both end sections of the joint base sections 31, 41 to form connecting joint members 30, 40. Seal members 33 closely stuck to the outer peripheries of the pipe line materials respectively are stretched on the inner peripheries of the joint base sections 31, 41, and crush sections 39 protruded to seal members 34 side are formed at connection portions 38 of the joint base sections 31, 41 and fitting flange sections 32, 42.
KAGEYAMA YOSHIYASU
IDE SADAYUKI
OOHABA KAZUHISA
TOMITA MASANORI
MIKI MAKOTO
NIPPON STEEL METAL PROD
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