SIST ISO 7805-1:1999 PDF
Industrial plate screens -- Part 1: Thickness of 3 mm and above
Industrial plate screens -- Part 1: Thickness of 3 mm and above
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 5
- Дата публикации:
- 1 июня 1999 г.
- ICS:
- 73.120
- Технический комитет:
- IRUD - Mining
Describes three patterns using round (circular) and square perforations in low carbon steel plate of 3 mm thickness and above. The sizes of holes range from 125 to 3.15 mm inclusive. Five ratios of pitch to hole are prescribed which result in nominal open areas ranging from about 64 to 23 %.
Abstract
Overview
ISO 7805-1:1984 - Industrial plate screens (thickness 3 mm and above) specifies standardized perforation patterns, sizes and tolerances for industrial sieve and screen plates manufactured from low‑carbon steel. The standard defines three hole arrangements (round and square perforations), nominal hole sizes from , and five prescribed pitch-to-hole ratios that produce nominal open areas roughly . Measurement and designation rules are included to support consistent manufacturing and ordering.
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