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prEN ISO 1183-2 Viešoji apklausa

Komentavimo iki data 2025-05-15

Plastikai. Neakytųjų plastikų tankio nustatymo metodai. 2 dalis. Tankio gradiento kolonėlės metodas (ISO/DIS 1183-2:2025)

This document specifies a gradient column method for the determination of the density of non-cellular moulded or extruded plastics or pellets in void-free form. Density gradient columns are columns containing a mixture of two liquids, the density in the column increasing uniformly from top to bottom. NOTE Density is frequently used to follow variations in physical structure or composition of plastic materials. Density can also be useful in assessing the uniformity of samples or specimens. The density of plastic materials can depend upon the choice of specimen preparation method. When this is the case, precise details of the specimen preparation method are intended to be included in the appropriate material specification.

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EN ISO 1043-4:2021/prA1 Viešoji apklausa

Komentavimo iki data 2025-05-15

Plastikai. Simboliai ir terminų santrumpos. 4 dalis. Antipirenai. 1 keitinys (ISO 1043-4:2021/DAM 1:2025)

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prEN 12608-1 Viešoji apklausa

Komentavimo iki data 2025-05-15

Neplastifikuoto polivinilchlorido (PVC-U) profiliuočiai, skirti langams ir durims gaminti. Klasifikavimas, reikalavimai ir bandymo metodai. 1 dalis. Nedengtieji PVC-U profiliuočiai su šviesios spalvos paviršiais

This European Standard specifies the classifications, requirements and test methods for non-covered unplasticized poly(vinyl chloride) (PVC-U) profiles intended to be used for the fabrication of windows and doors. NOTE 1 For editorial reasons in this document the term "window" is used for window/door.

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prEN ISO 11295 Viešoji apklausa

Komentavimo iki data 2025-05-08

Vamzdynų atnaujinimui naudojamos plastikinių vamzdžių sistemos. Strateginių, taktinių ir eksploatacinių veiksmų klasifikavimas ir apžvalga (ISO/DIS 11295:2025)

This document specifies the steps of the overall process of pipeline rehabilitation, comprising: — information on strategic and tactical activities: a) investigation and condition assessment of the existing pipeline; b) pipeline rehabilitation planning. — information on and requirements for operational activities: c) project specification; d) applications of techniques; e) documentation of the design and application process. Definitions and classification of families of renovation and trenchless replacement techniques are provided, and their respective features described. Areas of application covered include underground drainage and sewerage networks and underground water and gas supply networks. The following aspects are not covered by the scope of this document: — new construction provided as network extensions; — calculation methods to determine, for each viable technique, the characteristics of lining or replacement pipe material needed to secure the desired performance of the rehabilitated pipeline; — techniques providing non-structural pressure pipe liners; — techniques for local repair. It is the responsibility of the designer to choose and design the renovation or trenchless replacement pipeline system.

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prEN ISO 2507 Viešoji apklausa

Komentavimo iki data 2025-05-06

Termoplastikiniai vamzdžiai ir jungiamosios detalės. Vicat minkštėjimo temperatūra. Polivinilchlorido (PVC-U, PVC-C, PVC-Hi) ir akrilnitrilo (ABS, ASA) vamzdžių bei jungiamųjų detalių bendrasis bandymo metodas ir bandymo sąlygos (ISO/DIS 2507:2025)

The method specified is based on determining the temperature at which a standard indenter, under a force of 50 N ± 1 N, penetrates 1 mm into the surface of a test piece cut from the wall of a pipe or fitting while the temperature is raised at a constant rate. Is applicable only to thermoplastics materials for which it is possible to measure the temperature at which the rate of softening becomes rapid. Is based on ISO 306:1994 which, however, applies to materials in the form of sheets.

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prEN ISO 15015 Viešoji apklausa

Komentavimo iki data 2025-05-01

Plastikai. Ekstruziniai smūgiui atsparių akrilnitrilo ir stireno kopolimerų (ABS, AEPDS ir ASA) lakštai. Reikalavimai ir bandymo metodai (ISO/DIS 15015:2025)

ISO 15015:2011 specifies the requirements and test methods for solid flat extruded sheets of impact-modified acrylonitrile-styrene copolymer materials: acrylonitrile-butadiene-styrene (ABS), acrylonitrile-(ethylene-propylene-diene)-styrene (AEPDS) (commonly known as AES) and acrylonitrile-styrene-acrylate (ASA), without fillers or reinforcing materials. This International Standard also applies to ABS, AEPDS and ASA sheet in rolled form. It applies only to thicknesses from 0,25 mm to 20,0 mm.

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prEN ISO 844 Viešoji apklausa

Komentavimo iki data 2025-04-10

Standieji akytieji plastikai. Gniuždomųjų savybių nustatymas (ISO/DIS 844:2025)

This document specifies methods for determining the compressive strength and corresponding relative deformation, the compressive stress at 10 % relative deformation, and the compressive modulus of rigid cellular plastics.

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