Category: EN standards

1 Scope This European Standard specifies general requirements for structures and equipment as they relate to wastewater treatment plants for a total population of more than 50 PT. The primary application is designed for wastewater treatment plants for the treatment of domestic and municipal wastewater. Requirements for structures which are not specific for wastewater treatment plants are not within the […]

1 Scope This document covers the evaluation of conformity and the factory production control of flat thermally toughened soda lime silicate safety glass for use in buildings. Note: For glass products with electrical wiring or connections for, e.g. alarm or heating purposes,other directives, e.g. Low Voltage Directive, may apply. 2 Normative references The following referenced documents are indispensable for the […]

1 Scope This European standard specifies the method of measurement of the magnetic flux density, magnetic polarization and the magnetic field strength and also the determination of the demagnetization curve and recoil line of permanent magnet materials, such as those specified in IEC 60404-8-1, the properties of which are presumed homogeneous throughout their volume. The performance of a magnetic system […]

1 Scope This Part of EN 10297 specifies the technical delivery conditions for seamless circular tubes made of non-alloy and alloy steels for mechanical and general engineering purposes. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are […]

1 Scope This Part of EN 10296 specifies the technical delivery conditions for electric welded, laser beam welded and submerged arc welded tubes of circular cross section made of non-alloy and alloy steels for mechanical and general engineering purposes. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited […]

1Scope This European Standard specifies an infrared method after fusion under inert gas for the determination ofoxygen in steel and iron. The method is applicable to oxygen contents between 0,0005 %(m/m) and 0,01 %(m/m). 2Normative references This European Standard incorporates by dated or undated reference，provisions from other publications.These normative references are cited at the appropriate places in the text, and […]

1 Scope 1.1 This European Standard specifies the technical delivery requirements for round and flat bars, ribbed and grooved bars and rod manufactured from the alloy steels listed in Table 3, intended for hot-formed and subsequently heat-treated springs or cold-formed and subsequently heat-treated springs. The products are supplied in one of the heat-treatment conditions given for the different types of […]

1 Scope Part 4 of this document, in addition to Part 1 , specifies requirements for flat and long products of hot rolled weldable fine grain structural steels in the thermomechanical rolled condition in the grades and qualities given in Tables 2 to 4 (chemical composition) and Tables 5 to 7 (mechanical properties) in thickness ≤ 1 20 mm for […]

1 Scope This standard specifies yellow chromate conversion coating of aluminium and aluminium alloys. It shall be applicable wherever referenced. 2 Purpose of process To increase corrosion resistance and to improve the adhesion of paints and varnishes. Type B coatings are also suitable for the repair of mechanically damaged anodic coatings. 3 Normative references This European Standard incorporates by dated […]

1 Scope This European Standard defines the terms used in visual testing. 2 Terms and definitions 2.1 angle of vision angle between the surface to be tested or viewed and the point of observation NOTE See Figure 1 2.2 archival image recording system system for recording and archiving images 2.3 auxiliary lighting lighting in addition to the naturall or principal […]