DEVICE FOR LINING OF METAL PIPE WITH PLASTIC SHELL

摘要

construction of pipe-lines of metal pipes lined with a plastic shell for provision of their internal rust protection. SUBSTANCE: device has a means for catching the head structure of the plastic shell, draw-bar and a cable interconnecting these means. The device has a die and squeezing bosses, having the shape of circle segments in cross-section. The squeezing bosses are located in the die working member. The die inside diameter equals the outside diameter of the plastic shell. EFFECT: tight fit of the shell to the pipe inner surface, enhanced durability of metal pipes. 2 dwg