FOAM FILLED CORRUGATED PIPE

摘要

A double or triple wall corrugated pipe includes a series of cavities defined between the walls of the pipe and at least some of these cavities are filled with foam. The filled foam can alter the properties in selected regions of the corrugated pipe or throughout its length. Foam filling of cavities associated with the pipe connection components is one example where additional strength can be added in an area that otherwise may limit the overall rating of the pipe. Foam filling of cavities also provides desirable sound dampening properties allowing the pipe to be used in additional applications.