At Kollies Parts you will find several types of hose barbs. With angle and without angle, different materials and diameters.
When a hose needs to be connected from a pipe, a Hose Grommet or Hose Nipple or Hose Nozzle is used. This is screwed into the pipe and can by means of the ribs properly clamp the hose. Please note that the diameter of the hose corresponds to the ribs so that the hose is not too loose or does not fit.