Introduction of national standards
BS ISO 3297:2020 pdf free.Information and documentation – International standard serial number (ISSN). 5.3 A request for an ISSN shall be accompanied by a copy of or access to the earliest issue of serials or the current iteration of integrating resources. 5.4 A request for an ISSN shall he accompanied by metadata about the continuing resource to which an ISSN […]
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BS EN ISO 20320:2020 pdf free.Protective clothing for use in Snowboarding一Wrist Protectors一Requirements and test methods. An assessor of suitable hand size shall put on, tighten and take off both wrist protectors (left and right) by themselves (without external support) as specified in the information supplied by the manufacturer, including gloves for wrist protectors, provided to be worn with gloves. An […]
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BS EN ISO 19879:2021 pdf free.Metallic tube connections for fluid power and general use一Test methods for hydraulic fluid power connections. This document specifies uniform methods for the testing and performance evaluation of metallic tube connections, stud ends for ports and flange connections for use in hydraulic fluid power applications. This document does not apply to the testing of hydraulic quick-action […]
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BS EN ISO 8031:2020 pdf free.Rubber and plastics hoses and hose assemblies – Determination of electrical resistance and conductivity. The following special electrodes and contacts shall be used for the determination of the electrical resistance through the hose wall, and other test methods: a) Outer electrode: a copper sheet-metal band, of standard width 25 mm, clamped around the outer hose […]
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BS EN ISO 5912:2020 pdf free.Camping tents – Requirements and test methods. Camping tents composed of an uncoated outer material shall be subjected to a pre-treatment process consisting of a single rain test and a subsequent drying period of a minimum of 24 h at ambient conditions. NOTE It is recognized that due to local conditions and weather at the […]
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BS ISO 4097:2020 pdf free.Rubber, ethylene-propylene-diene (EPDM) – Evaluation procedure. The mixing technique in each method can be modified to achieve a good dispersion of all the ingredients. The LIM conditions shall be the same during the preparation of a series of identical mixes for each batch mixed. At the beginning of each series of test mixes, a machine-conditioning batch […]
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BS EN 50488:2020 pdf free.Railway applications – Fixed installations一 Electrical protective measures for working on or near an overhead contact line system and/or its associated return circuit. The planned work activity, the relevant risks and associated protective measures identified in the assessment shall be checked to ensure they are still valid before starting the work activity. 4.1.3 Creating an electrically […]
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BS EN 50306-4:2020 pdf free.Railway applications一Railway rolling stock cables having special fire performance一Thin wall Part 4: Multicore and multipair screened or not screened sheathed cables. EN 50306-3:2020, Railway applications – Railway rolling stock cables having special fire performance- Thin wall – Part 3: Single core and multicore cables screened and thin wall sheathed EN 60332-1-2. Tests on electric and optical […]
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BS EN 17414-1:2020 pdf free.District cooling pipes一Factory made flexible pipe system Part 1: Classification, general requirements and test methods. The flexibility of the pipe assembly is verified by testing at the minimum bending radius. The manufacturer of the pipe assembly shall declare the minimum installation bending radii for all dimensions produced, related to the central axis of the pipe assembly. […]
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BS EN 17397-1:2020 pdf free.Railway applications – Rail defects Part 1: Rail defect management. For the purposes of this document, the following terms and definitions apply. ISO and IEC maintain terminological databases for use in standardization at the following addresses: — IEC Electropedia: available at http://www.electropedia.org/ — ISO Online browsing platform: available at https://www.iso.org/ohp plain rail zone comprising all parts […]
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