BOW-TYPE DOUBLE LAYER PIPE

摘要

A bow-type double layer pipe is provided to form a transfer path using double layer pipes easily by being placed at a bent portion of the transfer pipe. A bow-type double layer pipe comprises a casing pipe(110); one or more core pipes(120) which has an external diameter smaller than the inside diameter of the casing pipe, has abrasion resistance, and is bent to have a center angle of less than 90 in order to be inserted into the casing pipe; and synthetic resins(130,140) which are coated onto the outer periphery of the core pipe and the inner periphery of the casing pipe, lubricate the core pipe when inserted into the casing pipe and support the core pipe after inserted into the casing pipe.