H. W. Johns Manville now placing on market conduit pipe
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[Trade Journal] Publication: Western Electrician Chicago, IL, United States |
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BUSINESS. · · The H. W. Johns-Manville Company of New York is now placing upon the market and installing sectional tile pipe conduit, which provides a conduit for pipes running underground, which insulates and protects the pipes, and which can be installed for a reasonable cost. This is known as the "J-M" Portland sectional conduit, and consists of tile pipe made in top and bottom sections. This division is made by cutting half through the shell of the pipe before it is baked and then breaking afterwards so that the joint is much like that made in replacing pieces of a broken plate, the use of neat hydraulic cement making it possible to put these sections together when desired, making practically a perfect-looking piece again. As the top and bottom sections are numbered to correspond, the same sections can always be mated, and thus a perfect joint is secured.
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