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Application filed by Корпорация "Энергоресурс-Инвест"filedCriticalКорпорация "Энергоресурс-Инвест"
Priority to UAA201112266ApriorityCriticalpatent/UA99416C2/en
Publication of UA99416C2publicationCriticalpatent/UA99416C2/en
Shaping Of Tube Ends By Bending Or Straightening
(AREA)
Extrusion Moulding Of Plastics Or The Like
(AREA)
Abstract
Disclosed is a method for producing a multilayer polymeric large-diameter pipe, according to which a spiral of selected diameter is molded by winding preliminarily extruded polymeric material, preferably of round or oval section, at an angle to the longitudinal axis of pipe and the coils are welded together from inside of the molded spiral and from outside. The spiral is molded in the vertical direction.
UAA201112266A2011-10-192011-10-19Method for producing multilayer polymeric large-diameter pipe by vertical spiral winding
UA99416C2
(en)