A method for extruding thermoplastic coatings onto pipe. In this method, the die slit encircles the advancing pipe and the thermoplastic is extruded without seams as a plastic pipe over the steel pipe.
A method for extruding thermoplastic coatings onto pipe. In this method, the die slit encircles the advancing pipe and the thermoplastic is extruded without seams as a plastic pipe over the steel pipe.