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.
Re: Black iron pipe. Sure are. Black iron pipe is cast from several grades of ductile or malleable iron whereas carbon steel pipe is generally wrought welded or seamless. Cast iron pipe is used for underground or submerged applications and for main steam pipes and branches that are subjected to acids.