Which category of pipe is black pipe?

Explanation:

Black pipe is commonly associated with iron pipe because it is made of iron or steel and is coated with a layer of black zinc or iron oxide to prevent rusting. It is often used for gas lines and other industrial applications rather than for water delivery.

Therefore, the answer to the question 'Which of the following categories of pipe is black pipe?' is A. iron pipe.

← Determining olympic skier tina maze s speed after 4 0 seconds Average mechanical energy of atoms in an ideal monatomic gas →