Hard sand and gravel supporting

Filter material is sand used to treat water drawn from nature


The multiple sizes of sand and gravel allow high-quality purification of water


It is available at RGT in all sizes and quantities 

Item

Description

Size :0.5-1mm,0.6-1.2mm,1-2mm,2-4mm,4-8mm,8-16mm,16-32mm

density

2.66 g/cm3

Volume weight

1.75 g/cm3

crush rate

0.53%

Abrasion rate

0.38%

Hole rate

43-47%

Hardness mohs rate

7.5

Dust rate

<1

Chemical spec

Boiling point

2550℃

Hydrochloric acid rate

<=3.0

High acid resistant

98%

Point melting

1480℃

Si02

>98%

Ca

0.02%

Zn

0.005%