ISO 4783-1:1989 Industrial wire screens and woven wire cloth — Guide to the choice of aperture size and wire diameter combinations
Tabulates a comprehensive range from which preferred groups of combinations may be chosen. The percentage open area of each combination is stated. The screens shall be designated in the following sequence by a) width of aperture, b) diameter of wire, c) material of wire, d) type of weave or type of crimp.
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, govern mental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
Draft International Standards adopted by the technical committees are circulated to the member bodies for approval before their acceptance as International Standards by the ISO Council. They are approved in accordance with ISO procedures requiring at least 75 % approval by the member bodies voting.
International Standard ISO 4783-1 was prepared by Technical Committee ISO/TC 24, Sieves, sieving and other sizing methods.
This second edition cancels and replaces the first edition (ISO 4783-1 : 1981), of which it constitutes a minor revision.
ISO 4783 consists of the following parts, under the general title Industrial wire screens and woven wire cloth — Guide to the choice of aperture size and wire diameter combinations :
— Part 1 : Generalities
— Part 2: Preferred combinations for woven wire doth
— Part 3: Preferred combinations for pre-crimped or pressure welded wire screens
1 Scope
This part of ISO 4783 tabulates combinations of aperture sizes and wire diameters for industrial wire screens and woven wire cloth. It provides thereby a comprehensive range from which preferred groups of combinations may be chosen.
The percentage open area A0 of each aperture/wire combination is stated to assist in assessing a combination for screening purposes.
ISO 4783-2 gives the preferred combinations for woven wire cloth, and ISO 4783-3 the preferred combinations for precrimped or pressure-welded wire screens.
2 Normative references
The following standards contain provisions which, through reference in this text, constitute provisions of this part of ISO 4783. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this part of ISO 4783 are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. Members of IEC and ISO maintain registers of currently valid International Standards.
ISO 3 :1973, Preferred numbers — Series of preferred numbers.
ISO 497 : 1973, Guide to the choice of series of preferred numbers and of series containing more rounded values of preferred numbers.
ISO 2194 : 1972, Wire screens and plate screens for industrial purposes — Nominal sizes of apertures.
ISO 4782 : 1987, Metal wire for industrial wire screens and woven wire doth.
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