WATER AND HOT WATER SUPPLY RESIN PIPE

摘要

PROBLEM TO BE SOLVED: To provide a water and hot water supply resin pipe excellent in flexibility and aqueous chlorine resistance and also excellent in general-purpose properties by adapting the cross-sectional dimension and hot inner pressure creep capacity resistance of a pipe to the standards of JIS. SOLUTION: The water and hot water supply resin pipe is a multilayered pipe having a plurality of layers in its diametric direction and the innermost layer of the plurality of the layers is based on crosslinked polyethylene of which the density is larger than 0.94 g/cm3and has a thickness of 0.6 mm or above in its diametric direction. The water and hot water supply resin pipe has the layer arranged on the outer layer side of the innermost layer and based on crosslinked polyethylene of which the density of 0.925-0.935 g/cm3and the load thereof measured in a three-point bending test is less than 200 N. COPYRIGHT: (C)2008,JPO&INPIT