FREMGANGSMAATE FOR TETTING MELLOM SEKSJONER AV TERMOPLASTROER MED STORE DIAMETRE

摘要

Lengths of large dia. thermoplastic pipe are joined by heat softening opposed bell and spigot areas (21a, 22a) of the joint, spraying into the heat softened area molten resin particles, and allowing the particles to cool in situ to form a sealing filling (24). The pipe lengths are at least 10ft. long, have an internal diameter of at least 24 inches and are at least 1/8 inch thick. Easy and efficient joining of large pipes forming sewers etc..