METHOD FOR PRODUCTION OF MULTILAYER SPIRAL-SEAMED WELDED POLYMERIC PIPES OF LARGE DIAMETER WITH HONEYCOMB WALL

The method for production of multilayer spiral-seamed welded polymeric pipes of large diameter with honeycomb wall consists in that preliminarily extruded material of wall, mainly of round cross section, is formed with the help of the rolls in the spiral of required diameter, directing them at an an...

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Bibliographische Detailangaben
Hauptverfasser:	TRETIAK IVAN YURIIOVYCH, NIRONOVYCH IVAN OPANASOVYCH, DANYLCHENKO BORYS VASYLIOVYCH, BEREZIN OLEKSANDR MYKOLAIOVYCH
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING PERFORMING OPERATIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	The method for production of multilayer spiral-seamed welded polymeric pipes of large diameter with honeycomb wall consists in that preliminarily extruded material of wall, mainly of round cross section, is formed with the help of the rolls in the spiral of required diameter, directing them at an angle to the longitudinal axis of the pipe under construction. The formation of the wall of pipe is achieved by simultaneous winding on and comprehensive welding of the turns of spirals, which are placed one over another with displacement between them up to the distance, which is equal to a radius of the extruded material, from which the spiral is wound.