Overview
ISO 7805-2:1987 establishes international guidelines for industrial plate screens with a thickness below 3 mm. Developed by the International Organization for Standardization (ISO), this standard focuses on perforated plates used in industrial sieving and screening applications, specifying three perforation patterns: round (circular) and square holes, with sizes ranging down to 2 mm (square) and 0.5 mm (round). Five pitch-to-hole ratios are provided, corresponding to nominal open areas from about 60% down to 23%. By standardizing dimensions, tolerances, and arrangements, ISO 7805-2 helps manufacturers, suppliers, and users achieve consistency and quality in plate screen production and application.
Keywords: ISO 7805-2, industrial plate screens, perforated plate, sieving, standard, open area, hole size, pitch, tolerances
Key Topics
Applications
ISO 7805-2:1987 is essential for industries and sectors utilizing thin perforated plate screens for material sizing, segregation, and filtering. Typical applications include:
- Mineral processing and mining: For sizing aggregates and classification.
- Agriculture: Grain sorting and cleaning machinery.
- Food processing: Sifting, grading, or filtering solid ingredients.
- Pharmaceutical and chemical industries: Granular material handling and separation.
- Industrial manufacturing: Quality control and inline process screening.
By adhering to ISO 7805-2, organizations benefit from:
- Consistent screen performance and longevity
- Interchangeable components from different suppliers
- Improved product quality and process efficiency
- Compliance with international engineering and trade standards
Related Standards
ISO 7805-2 is part of a comprehensive suite governing industrial sieves and screens:
- ISO 7805-1: Industrial plate screens - Part 1: Thickness of 3 mm and above
- ISO 2194: Nominal sizes of apertures for wire and plate screens used in industry
- ISO 2395: Vocabulary for test sieves and sieving
- ISO 7806: Codification for designating perforations in industrial plate screens
These related standards address broader plate thicknesses, consistent nomenclature, and unified sizing methods. Implementing ISO 7805-2 alongside these standards ensures optimized screening processes and reliable, documented results across global industrial operations.
