Welding hoses (also known as welding gas hoses) are used to transport welding gases to welding equipment. Grade R welding hoses are designed for carrying acetylene or oxygen.

A hose is a long plastic or rubber tube that's used for moving a liquid from one place to another. You may use a hose to water your lawn, or to get gas from the pump into your car's tank. Don't use a hose to ingest liquids; use a glass instead.