Patent ID: 6471251
Filing Date: 2002-10-29
Classification: B29C,B29D,B29K,B29L,F16L,Y10S

Abstract:
A spirally corrugated pipe elbow, wherein, after a bend forming portion of a pipe body (P) having a given length and including a spirally corrugated pipe wall (1) is cut and removed from said pipe body (P) in the form of a cut portion having a substantially V-like shape when it is viewed from a side surface side thereof while a partial portion (a) of said pipe wall (1) existing in the circumferential direction of said pipe body (P) is left uncut, the two cut surfaces of the pipe body (P) are bent and contacted with each other in a state that said uncut partial portion (a) is set on a large diameter side of said elbow, and said contact portions (t) of said cut surfaces are connected together in a watertight manner using connecting material (m).