John F. Kennedy was the US president during the Cuban Missile crisis General Secretary of the USSR was Nikita Krushchev and Fidel Castro was the Cuban ruler involved in this â¦ crisis.
What is the metal used for most electrical wiring and water pipes? Copper is the most common metal used in electrical wires because it has a structure which includes freely-moving negatively-charged particles-called electrons-which are es â¦ sential for the conduction of electricity.
All pipes are made of plastic or metal, and each type is used for specific applications. Refer to the tables below to learn more about some common types of pipes for water supply, drainage and gas applications and how they are used. There are several plumbing piping dimensional standards.