WERKWIJZE VOOR HET LASSEN VAN TEN MINSTE EEN ZADELSTUK AAN HET BUITENOPPERVLAK VAN EEN KUNSTSTOFBUIS.

摘要

A plastic pipe joint, integrally composed of a saddle-shaped foot plate and a pipe stub, is welded to the outer surface of a pipe by melting the concave surface of the foot plate and the entire periphery of the pipe along a cylindrical zone whose axial length is somewhat larger than the foot plate. The pipe joint is seated on the pipe surface by means of its foot plate and the plastic allowed to cool until the adjacent melted parts fuse and form a welding joint. Melting of the entire periphery of the pipe within the axial zone avoids later stresses at the welding joint.