Thomas Edison. Thomas Alva Edison (February 11, 1847 â October 18, 1931) was an American inventor and businessman, who has been described as America's greatest inventor. He developed many devices that greatly influenced life around the world, including the phonograph, the motion picture camera, and the long-lasting, practical electric light bulb.
Pipe dope, or pipe joint compound, is a gooey compound used to seal the connection between threaded pipes and fittings. Because the threads in pipes and fittings still leave an air gap between the two surfaces, the gap must be filled to make it water tight (or gas tight for gas lines).
Blue MDPE pipe for use in buried mains water installations. It is normally supplied in 25 metre, 50 metre or 100 metre coils and various diameters as shown below. MDPE has a pressure rating of 12 bar up to pipe diameter of 63mm and 10 bar for 90mm and 110mm pipe diameter.A range of pipe fittings are available for use with MDPE pipe. MDPE pipe is often referred to as alkathene pipe or pe pipe.For long overground runs Black MDPE pipe is used to prevent light ingress, other uses include irrigated land systems and light industrial use.DPE has a pressure rating of 12 bar up to pipe diameter of 63mm and 10 bar for 90mm and 110mm pipe diameter. A range of pipe fittings are available for use with MDPE pipe.