Method of making concrete pipe

The method of making concrete pipe in the horizontal position from no-slump concrete, said method comprising the steps of horizontally positioning and securing an outer mold on a table, securing end rings having openings therein near opposite ends of said outer mold, axially shifting a horizontally positioned cylindrical inner mold in a horizontal direction so as to insert said inner mold into said outer mold and through said openings in said end rings and in concentric relationship therewith, maintaining said inner and outer molds in said concentric relationship, dumping no-slump concrete through a longitudinal opening in the upper side of said outer mold and thereby filling the annular chamber between said molds, vibrating said table to effect vibration of said molds during said filling to thereby compactly place said no-slump concrete therebetween in the form of a wet pipe, then immediately axially withdrawing said inner mold in a generally horizontal direction from said outer mold and from said openings in said end rings, then immediately detaching said outer mold from said table, then immediately raising said outer mold and said wet pipe therein to a vertical position, then immediately setting the lower end of said wet pipe on one of its end rings and releasing said one end ring from said outer mold, and then immediately vertically stripping said outer mold from said wet pipe, axially sliding said outer mold from said wet pipe along the entire length thereof leaving said pipe on said end ring.