ISO 2284-2017 pdf free.Hand taps for parallel and taper pipe threads – General dimensions and marking. 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 references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 237, Rotating tools with parallel shanks一Diameters of shanks and sizes of driving squares IS0 5969, Ground thread taps for pipe threads G series and Rp series一Tolerances on the threaded portion. 3 Terms and definitions No terms and definitions are listed in this document. ISO and IEC maintain terminological databases for use in standardization at the following addresses: 一IEC Electropedia: available at http://www.electropedia.org/ 一ISO Online browsing platform: available at http://www.iso.org/obp 4 General dimensions The general dimensions are given in Table 1 and Table 2. Shank diameters and driving squares shall conform to the specifications given in ISO 237, the tolerances being as follows: 一on diameter, d1:h9 for precision shanks;h11 for other shanks; 一on width across flats, a:h1; h12 (including errors of form of the square and of its position in relation to the shank). Taps in accordance with…

ISO 544-2017 pdf free.Welding consumables – Technical delivery conditions for filler materials and fluxes一Type of product,dimensions, tolerances and markings. The flux shall be granular and so constituted that it can be conveyed freely by the flux feed system. The particle size distribution shall be uniform and consistent in the different packaging units. The fluxes may be obtainable in different particle size distributions (see ISO 14174). 6 Rounding procedure Actual test values obtained shall be subject to IS0 80000-1:2009, B.3, Rule A. If the measured values are obtained by equipment calibrated in units other than those of this document, the measured values shall be converted to the units of this document before rounding. If an average value is to be compared to the requirements of this document, rounding shall be done only after calculating the average. The rounded results shall fulfil the requirements of the appropriate table for the classification under test. 7 Condition of welding consumables 7.1 Covered electrodes The electrode covering shall be concentric and consistent along the electrode length in order to avoid asymmetrical melting-off of the covering during welding. The electrode covering shall not exhibit any irregularities, cracks or other surface defects which would adversely affect the…

ISO 812-2017 pdf free.Rubber, vulcanized or thermoplastic一Determination of low-temperature brittl eness. 8.1.1 Bring the bath or test chamber to a temperature below the expected lowest temperature of non-failure. In the case of a liquid heat-transfer medium, place sufficient liquid in the bath to ensure approximately 25 mm depth or more of the liquid over the test piece(s). Pre-cool the test piece clamp by immersing it in the cooled bath or test chamber. 8.1.2 Quickly mount the test piece(s) in the test piece clamp and immerse them for 5 mm at the test temperature when using a liquid medium or for 10 mm when using a gaseous medium (see also Iso 23529). NOTE 1 For very soft materials, it might be necessary to use a device to support the test piece horizontally until just before the striker is released. The free length of the test piece(s) shall be greater than 19 mm. Test five type A or type B test pieces. If the available striking energy has the minimum value specified in 4.1.2. they may all be tested at the same time. Proper tightening of the clamp is of the utmost importance. The clamp shall be tightened so that each test…

ISO 532-1-2017 pdf free.Acoustics一Methods for calculating loudness一Part 1:Zwicker method. Then, for each band a slope towards the higher critical band is added, and the area below the distribution of specific loudness is summed. The specific value of the slope to be added depends on the respective one-third-octave-band levels and centre frequencies. Again, detailed information can be found in the above mentioned graphical representations or in the tables of j respectively. Having entered the corrected one-third-octave-band levels into the diagram, the shape of the specific loudness pattern starts with a vertical rise to the one-third-octave-band level measured, stays at the main value corresponding to the one-third-octave-band level in question and then falls with a slope unless the level is higher in the next one-third-octave band, in which case the pattern rises vertically to the level appropriate for the next one-third-octave band. Both the one-third-octave-band spectrum and the loudness pattern are highlighted by solid curves in the diagram of Figure 2. If the next one-third-octave-band level is lower, the decrease of the specific loudness towards higher centre frequencies follows the broken lines, corresponding to the upper slope. In this way, the final specific loudness versus critical band rate pattern, shortened to “loudness…

ISO 377-2017 pdf free.Steel and steel products一Location and preparation of samples and test pieces for mechanical testing. A sample intended for testing in the as-delivered condition shall be separated from the product either a) after the forming or heat treatment processes or both have been completed, or b] before the heat treatment process, in which case the heat treatment of the separated sample shall be carried out under the same conditions as that of the product. Separation of the sample shall be carried out in such a manner so as not to change the characteristics of that part of the sample used to provide the test pieces. If flattening or straightening of the sample is unavoidable in the preparation of the test piece, the flattening or straightening shall be carried out cold unless otherwise specified in the product standard. 5.3.3 Testing in the reference condition 5.3.3.1 Sample A sample intended for testing in the reference condition shall be separated from the product at the stage of manufacture specified in the product standard or order. Separation of the sample shall be carried out in such a manner so as not to change the characteristics of that part of the sample used…

ISO 368-2017 pdf free.Spinning preparatory, spinning and doubling (twisting) machinery一Tubes for ring-spinning, doubling and twisting spindles, taper 1:38 and 1:64. 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 references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 286-2, Geometrical product specifications (GPS) — ISO code system for tolerances on linear sizes — Part 2: Tables of standard tolerance classes and limit deviations for holes and shafts 3 Terms and definitions No terms and definitions are listed in this document. ISO and IEC maintain terminological databases for use in standardization at the following addresses: — ISO Online browsing platform: available at https://www.iso.org/obp — IEC Electropedia: available at http:/Jwww.electropediorg/ 4 Types, dimensions and tolerances 4.1 Tubes 4.1.1 Tube types Plain top tubes as shown in Figure 1 a) shall be designated as type A tubes. Rolled-in top tubes as shown in Figure 1 b) shall be designated as type B tubes. 4.1.2 Dimensions Tube sizes shall be chosen from the dimensions specified in Table 1. 4.1.3 Total run-out tolerance The permissible…

ISO 91-2017 pdf free.Petroleum and related products一Temperature and pressure volume  correction factors ( petroleum measurement tables) and standard reference cond litions. API MPMS Chapter 11.1.2004/Adjunct to ASTM D1250-04 and IP 200/04 provides general procedures for the conversion of input data to generate the corrected values at the user specified base temperature and pressure using the effect of temperature on the liquid (CTL), the compressibility coefficient (Fr), the correction for the effect of pressure on the liquid (CPL), or the correction for temperature and pressure of a liquid (CTPL), in a form that is consistent with the computation procedures used to generate VCF values. Two sets of procedures are given for computing the volume correction factor: one set for data expressed in U.S. customary units (temperature in degrees Fahrenheit, pressure in pounds per square inch gauge), the other for the metric system of units (temperature in degrees Celsius, pressure in kilopascals). In contrast to API MPMS Chapter 11.1-1980/ASTM D1250-80/IP 200/80, the metric procedures require the procedure for U.S. customary units be used first to compute density at 60 °F. This value is then further corrected to give the metric output, For density/weight/volume intraconversion, reference shall be made to API MPMS Chapter…

ISO 37-2017 pdf free.Rubber, vulcanized or thermoplastic – Determination of tensile stress-strain properties. For non-product tests, thy maximum time between vulcanization and testing shall be 4 wroks and, for evaluations Intended to be comparable, the tests shall, as far as possible, be carried out after the same time intervaL For product tests, whenever possible, the time between vukanization and testing shall not exceed 3 months. In other cases, tests shall be made within 2 months of the date of receipt of the product by the customer. 10.2 Protection of samples and test pieces Samples and test pieces shall be protected as completely as possible from all external influences likely to cause damage during the interval between vulcanization and testing. e.g. they shall be protected from light and heat. 10.3 Conditioning of samples Condition all samples, other than those from latex, in accordance with ISO 23529 at a standard laboratory temperature, without humidity control, for not less than 3 h prior to cutting out thc test pieces. Condition all prepared latex samples in accordance with ISO 23529 at a standard laboratory temperature, with humidity control, for not less than 96 h prior to cutting out the test pieces. 10.4 Conditioning of…

BS ISO 20711:2017 pdf free.Optics and photonics一Environmental requirements一Test requirements for telescopic systems. For the purposes of this document, the terms and definitions given in ISO 10109 and the following 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 http://www.iso.org/obp extent of testing sum of all required tests to ascertain operability, as well as product performance within the intended use and life span Note ito entry: The extent of testing is subdivided into type (or sample) testing and series testing. [SOURCE: ISO 10109:2015, 2.3, modified.] type testing sample testing extent of testing required of initial or qualification samples sufficient to ascertain whether the instrument complies with all the environmental requirements of the relevant specification Note ito entry: Type (or sample) testing is designated by the code letter T. series testing extent of testing required of ensure constant production quality Note 1 to entry: Sampling procedures can be used. Note 2 to entry: Series testing is designated by the code letter S. Subdivision of the instrument group “telescopic systems” The group telescopic systems is subdivided into instrument types with the type numbers given…

ISO 532-2-2017 pdf free.Acoustics一Methods for calculating loudness一Part 2:Moore-Glasberg method. The method described in the main part of this document specifies a method for calculating loudness and loudness level based on the Moore-Glasberg procedure. The procedure involves a sequence of stages. Each stage is described below. However, it is envisaged that those wishing to calculate loudness using this procedure will use the computer program (see Annex C) provided with this document that implements the described procedure. It is not expected that the procedure will be implemented by hand. Such computations would be very time consuming. The source code provided in Annex C gives an example of the implementation of the method. Other implementations using different software are possible. NOTE 1 The computational procedure described In this document is an updated version of procedures published earlier elsewhereli.-i-iil. NOTE 2 Uncertainties are addressed in Clause 9. 5 Specifications of signals 5.1 General The spectrum of the signal whose loudness is to be determined shall be specified at each ear. The spectrum can be specified exactly using the methods described in £2. 53 and £4 for the case of a complex tone, noise consisting of bands of pink or white noise of defined width,…