The A031 series includes perforated plate test sieves featuring square holes and a 200 mm diameter tinned steel frame. They are designed for coarse aggregate and material classification in laboratory and field testing.

The sieves are available with square apertures ranging from 4 mm to 125 mm. Each model is identified by a serial number engraved on the label, which also displays the exact opening size, ensuring traceability and identification.

Every sieve is supplied complete with a certificate of conformity, in line with Matest’s commitment to quality and precision in testing equipment.

“Square Hole”

The available openings of the perforated plate square hole sieves are listed in the next page, and are coded from n° 01 to 37 The buyer has to add to this number:

A031-… for the frame Ø 200 mm

A032-… for the frame Ø 300 mm

A033-… for the frame Ø 400 mm