grade

Specification

Well drilling

Bulk density ≥ 4.2g /cm， BaSO4 ≥ 92% ， 74 mesh residue ＜ 3% ， 43 mesh residue ＜ 5%

Chemical industry

BaSO4 ≥ 95% ， Fe2O3+SrSO4 ≤ 1% ， SiO2+CaO minim allowed

Paint

High whiteness ， fineness should be pass 43 （ 25mesh ） at least