4439 International Standard (Iso) INTE RNATIONAL ORGANIZATION FOR STANDARDIZATION MEXAYHAPOAHAH OPTAHW3ALWH HO CTAHAAPTW3ALMW·ORGANISATION INTE RNATIONALE DE NORMALISATION Unplasticized polyvinyl chloride (PVC) pipes and fittings -- Determination and specification of density Tubes et raccords en polychlorure de vinyle (PVC) non plastifie - Détermination et specification de la masse volumique First edition - 1979-07-01 UDC 621.643.29 : 678.743.22 : 531.754 Ref. No. ISO 4439-1979 (E) 4439-1979 (E) Descriptors : piping, plastic tubes, pipe fitings, unplasticized polyvinyl chloride, physical tests, density measurement, density (mass/volume). Price based on 1 page Not for Resale Foreword ISo (the International Organization for Standardization) is a worldwide federation of national standards institutes (IsO member bodies). The work of developing interna- tional Standards is carried out through Iso technical committees. Every member body interested in a subject for which a technical committee has been set up has the right to governmental, in liaison with ISO, also take part in the work. Draft International Standards adopted by the technical committees are circulated to the member bodies for approval before their acceptance as International Standards by the Iso Council. Internal Standard ISO 4439 was developed by Technicai Committee ISO/TC 138, Plastics pipes, fittings and valves for the transport of fluids, and was circulated to the member bodies in July 1977. It has been approved by the member bodies of the following countries : Australia India Poland Belgium Ireland Romania Bulgaria Israel South Africa, Rep. of Chile Italy Spain Czechoslovakia Japan Sweden Denmark Korea, Rep. of Switzerland Turkey Finland Mexico France Netherlands USSR Germany, F. R. New Zealand Yugoslavia Greece Norway The member bodies of the following countries expressed disapproval of the document on technical grounds : United Kingdom USA @ International Organization for Standardization, 1979 Printed inSwitzerland ed without license from IHS Not for Resale ISO 4439-1979 (E) INTERNATIONAL STANDARD Unplasticized polyvinyl chloride (PVC) pipes and fittings --- Determination and specification of density 2 Reference 1 Scope and field of application This International Standard specifies a method for the deter- ISO/R 1183, Plastics - Methods for determining the density mination of density of pipes and fittings of unplasticized and relative density (specific gravity) of plastics, excluding polyvinyl chloride (PVC) and lays down the permissible limits cellular plastics. for this density. The material from which the pipes and fittings are made is 3 Specification essentially polyvinyl chloride to which only the additives re- The density at 23 'C of an unplasticized polyvinyl chloride quired for their manufacture have been added. (PVC) pipe or fitting, 23, measured by the method described in This International Standard does not apply to pipes and fittings ISO/R 1183, shall be between the following limits : made from compounds containing fillers, or to cellular pro- 1,35 g/cm3 < @23 < 1,46 g/cm3 ducts. Copyright International Organization for Standardization Not for Resale