Free Standards Library

IS0 4871:1996 pdf download - Acoustics - Declaration and verification of noise emission values of machinery and equipment. 3 Definitions For the purposes of this International Standard, the following definitions apply. 3.1 machinery and equipment: An assembly...

IS0 4935 : 1989 pdf download - Steel and iron - Determination of sulfur content - Infrared absorption method after combustion in an induction furnace. 5 Apparatus During the analysis, unless otherwise stated, use only ordinary laboratory...

ISO 4957:2018 pdf download - Tool steels. 2 Normative references The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated...

ISO 4969:2015 pdf download - Steel — Etching method for macroscopic examination. 2 Principle 2.1 The use of the test and the conditions for interpreting the results observed depend on the particular case, details are presented in...

ISO 5155-1995 pdf download - Household refrigerating appliances一Frozen food storage cabinets and food freezers一Characteristics and test methods. 3.1 Apliances NOTES 1 From the point of view of installation, there are various types of household refrigerator-freezers and their...

ISO 5178:2019 pdf download - Destructive tests on welds in metallic materials - Longitudinal tensile test on weld metal in fusion welded joints. 6 Removal of test specimens 6.1 Location The test specimen shall be taken longitudinally...

ISO 5208:2008 pdf download - Industrial valves — Pressure testing of metallic valves. 3.3 Closure pressure testing options A purchaser may specify, in a valve procurement purchase order, optional closure testing. See Table 1. 4 Requirements for...

ISO 5270:2012 pdf download - Pulps — Laboratory sheets — Determination of physical properties. 5.3 Optical properties For certain purposes, it may be desirable to measure optical properties of laboratory sheets prepared using the conventional sheet former...