vitrified clay

Pipes for sewage are still predominantly made from concrete or vitrified clay.

Although old and new runs appear similar, direct comparison demonstrates the newer pieces (made with the fully vitrified clay body) are noticeably smaller.

One blade shattered on the marble tiles, the edges of the vitrified clay glinting with silica in the sunlight.

Vitrified clay pipe.

The company then changed the body to a fully vitrified clay, to enable marketing to the restaurant and service industry, as this clay was more durable.

National Clay Pipe Institute - a not-for-profit trade association of the manufacturers of vitrified clay pipe.

Acid resistant materials like PVC or vitrified clay pipe may be substituted for concrete or steel sewers.

Loma Farms is a planned farming complex which includes thirteen buildings constructed of vitrified clay tile, situated about one-half mile from the lodge complex.

Vitrified Clay Pipe (VCP) is pipe made from clay that has been subjected to vitrification, a process which fuses the clay particles to a very hard, inert, glass-like state.

In 1934, Cunningham introduced a council resolution that would outlaw the use of concrete pipes in sanitary (street) sewers in favor of vitrified clay pipe, noting that the concrete piping disintegrated rapidly from the effects of sewer gas.