What's the difference between hose and hose for compressed air?
When the joint is made into a quick plug, hard pipe is rare; for example, galvanized steel pipe, joint practice is similar to hydraulic tubing. The pipes in the compressed air are welded with steel tubes, but I don't think that's what you call the hard tube
Generally, they are bundled into difficult to buy, no need to stand upright, probably because I have not seen large caliber. I also think this thing has absolutely nothing to stand up to. You say the hard one is probably covered with rubber and steel ring inside. Generally used to connect peripherals and larger gas equipment. The hoses we call are generally not very rigid. It breaks easily because it is too hard. Use often put hose made of spring shape, prevent the discount of breath
In use, it is usually marked with color. For example, the intake is made of blue, and the exhaust is made red, but it is not necessary.
