

Variegated pebble for water treatment with AWWA standard, F08 series
Variegated pebble for support gravel in water treatment(F08 series), Cobble
Variegated pebble other name: Cobble support gravel, Support gravel etc.
Variegated pebble (F08 series), the low strata of a filter bed, acts to support the filter media. The max efficiency, the support gravel must possess the necessary attributes of hardness and be rounded or non-angular. Correct gradation and sizing must be calculated to properly support the filter media.
Variegated pebble , Support gravel(F08) spec: AWWA standard:
Variegated pebble , Support gravel(F08) package:25, 50, 500, or 1000 kgs woven bag
Type | SiO2 Content min | Density g/cm3 | Insoluble in HCl, max | Bulk density g/cm3 | Hardness Moh, min | Attrition max |
Variegated Pebble, Support Gravel(F08) | 60%-90% | 2.6-2.9 | 0.2% | 1.7-1.9 | 5.0-7.0 | 1% |
Particle size, mm | 2.0 -4.0mm , 3.0 -5.0mm , 4.0 -6.0mm , 6.0 -8.0mm , 8.0 -12.0mm , 8.0 -16.0mm , 12 -20mm , 16 -25mm , 16 -32mm , 30 -40mm (Other specs. are available) |