The invention relates to a method of manufacturing a tubular member made of
synthetic material, the method being of the type in which the tubular
member is extruded. In the method, during extrusion of the tubular member,
the extruded synthetic material is subjected to a flow of water in liquid
or steam form that comes into contact with the inside or the outside
surface of the tubular member in such a manner as to form crevices in the
surface of the tubular member that comes into contact with the flow of
water. The extruded synthetic material is preferably subjected to a flow
of water in liquid form. The surface including the crevices forms a
low-friction surface. Application to making optical fiber cable networks
in which the cables are inserted into tubes by carrying or blowing
methods.
