GAS CONDUIT AND METHOD OF MAKING SAME

摘要

A gas conduit and method of making the same is provided wherein the conduit has a plurality of axially spaced convolutions defined as an integral part thereof and has a roughened interior surface defined by a plurality of substantially axially extending grooves in the conduit. The roughened interior surface is particularly adapted to provide quieter gas flow through the conduit by breaking up gas flow patterns caused by the convolutions and which patterns would ordinarily tend to produce undesirable noise levels and chiming.