The initial scheme opened in 1906 with two 42in diameter pipes.

Use one-half or three-quarter-inch diameter pipe; the sections should be at least 12 inches long.

Hot-water systems take up less room because the water circulates in small diameter pipes.

Originally half-pipes were half sections of a large diameter pipe.

This is a vertical water circuit with large diameter pipes.

They are also only effective on small diameter pipes - 40-50mm rather than main sewer pipes of 110mm.

Small diameter pipes otherwise inaccessible for examination can now be viewed using pipeline video inspection.

An 18-inch diameter pipe runs around the perimeter of one floor and delivers fuel to each engine.

Cat-back exhaust systems generally use larger diameter pipe than the stock system.

For small diameter pipes there may not be enough room for the tractor mechanism.