Pebbles ( gravel) filter divided natural type and machining type two, after mechanical processing by milling quartz ore crushing, washing, screening is made, the appearance of smooth spherical, is necessary for a variety of media supporting layer below .

Gravel filter physical and chemical indicators :

Analysis Project Test Data Analysis Project Test Data
SiO2 ≥98% density of 2.66g / cm3
Hydrochloric acid soluble rate ≤0.2% bulk density of 1.8g /

Note: Specifications can be produced according to user requirements.
The company supplies Gongyi City, Henan Province Yuxin pebbles ( gravel) filter quality assurance, welcome to consult the discussion.