Normy

Obsah

ČSN EN 14420-8+A1 This European Standard specifies dimensions, types of connections, quality of materials, marking re-quirements and testing requirements for hose fittings with symmetrical half couplings (Guillemin sys-tem), with mobile locking ring, for hose assemblies with a maximum working pressure of up to 10 bar ) with hose tails according to EN 14420 2 and clamp units according to EN 14420 3. Couplings in accord-ance with this document serve as link between hoses and connections to transport liquids, solids (e.g. powders, granules) except steam and liquid gas. The working temperature range is -20 °C up to +65 °C.

Obsah

ČSN EN 59 This European Standard specifies a method for determining the indentation hardness of glass reinforced plastics materials by means of a Barcol hardness tester. The Barcol hardness tester is a portable device which can be used with a stand. This method is suitable for testing the indentation hardness of individual test specimens or finished products for production control purposes.

Obsah

ČSN ISO 18489 Tato mezinárodní norma specifikuje metodu stanovení odolnosti vůči pomalému růstu trhliny (SCG) materiálů z polyethylenu, trubek a tvarovek. Zkouška je použitelná pro vzorky odebrané z lisovaných desek nebo vytlačených trubek a vstřikovaných tvarovek vhodné tloušťky. Tato mezinárodní norma uvádí metodu, která je vhodná k charakterizaci urychleného lomového chování při normální teplotě 23 °C různých typů polyethylenu, především typů PE 80 a PE 100 pro trubkové aplikace.

Obsah

ČSN EN 438-3 This European Standard applies to laminates less than 2 mm thick produced by using an high pressure process, normally intended for bonding to supporting substrates to produce HPL composite panels and establishes a classification system for high-pressure decorative laminates according to their performance and main recommended fields of application, including materials with special characteristics, for example formability or defined reaction to fire. This European Standard also specifies requirements for the properties of the various types of laminates covered by this classification system. High-pressure decorative laminates are characterised by their qualities, durability and functional performance. HPL sheets are available in a wide variety of colours, patterns and surface finishes; they are resistant to wear, scratching, impact, moisture, heat and staining; and possess good hygienic and anti-static properties, being easy to clean and maintain. EN 438-2 specifies the methods of test relevant to this European Standard. EN 438-4, EN 438-5, EN 438-6, EN 438-7, EN 438-8 and EN 438-9 are reserved for special types of HPL materials.

Obsah

ČSN EN 438-6 This European Standard applies to Exterior-grade Compact laminates of thickness 2 mm and greater produced by using a high pressure process. It specifies requirements for standard and flame-retardant laminates intended for use under outdoor weather conditions such as direct sunlight rain and frost. Two levels of performance are specified; one for moderate exterior conditions, and the other for severe exterior conditions. Laminates complying with this European Standard are referred to as Exterior-grade Compact laminates, and are characterized by their high tensile strength, high impact resistance, thermal shock resistance, and resistance to weather and corrosion. They are available in a variety of decorative colours, with high resistance to colour change and aging in outdoor applications. When they are self-supporting Exterior-grade Compact laminates are ready for installation, and only require cutting to size, drilling, etc. to suit the application. EN 438-2 specifies the methods of test relevant to this part of EN 438.

Obsah

ČSN EN 438-4 This European Standard specifies performance requirements for two types of compact laminate of thickness 2 mm or greater produced by using a high pressure process intended for interior use . High-pressure decorative Compact laminates are characterised by their aesthetic qualities, strength, durability and functional performance. Compact HPL sheets are available in a wide variety of colours, patterns and surface finishes; they are extremely strong, and resistant to wear, impact, scratching, moisture, heat and staining; and possess good hygienic and anti-static properties, being easy to clean and maintain. EN 438-2 specifies the methods of test relevant to this European Standard.

Obsah

ČSN EN 438-5 This European Standard applies to six classes of flooring grade laminates less than 2 mm thick produced by using a high pressure process, intended for bonding to supporting substrates, to produce HPL flooring elements. For laminate floor covering applications they meet the surface property requirements specified in EN 13329. High-pressure decorative flooring laminates are characterised by their high resistance to abrasion, aesthetic qualities and durability. They have good hygienic and anti-static properties and are easy to clean and maintain. The requirements in this document apply only to the high-pressure laminate, and additional properties will need to be specified in order to define the functional performance of the finished flooring product. This European Standard applies only to decorative laminates as defined in Clause 3. EN 438-2 specifies the methods of test relevant to this European Standard.

Obsah

ČSN EN 16847 This European Standard specifies a chromatographic method which allows the identification of heptagluconic acid (HGA) in fertilizers containing heptagluconic acid metal complexes. This method is applicable to EC fertilizers containing complexed micro-nutrients, which are covered by Regulation (EC) No 2003/2003 [1].

Obsah

ČSN EN ISO 4797 This International Standard specifies requirements for an internationally acceptable series of boiling flasks with conical ground joints for general laboratory purposes.

Obsah

ČSN EN ISO 3819 This International Standard specifies requirements for an internationally acceptable series of glass beakers for laboratory use.

Obsah

ČSN EN 1383 This European Standard specifies the test method for determining the resistance of timber to the head pull through of timber fasteners. In this standard 'timber' includes solid timber, glued laminated timber and wood-based products. The test method applies to all types of nails, screws and staples excluding screws with fully threaded shank. Compared to EN 1383:1999, the following changes have been made: - replacement of EN 28970 by EN ISO 8970; - improvement to figures and definitions.

Obsah

ČSN EN 597-1 Tato evropská norma stanoví postup pro hodnocení zápalnosti matrací, čalouněných roštů postelí a matracových chráničů, které jsou vystaveny doutnající cigaretě jako zdroji zapálení. Nafukovací matrace a vodní postele jsou z této normy vyloučeny. Norma obsahuje jednu přílohu: Příloha A (informativní) Vzorový protokol o zkoušce.