تماشای ویدئو تمیز کردن نمای آجری سطوح بتنی GRACO EcoQuip 2 EQp از آی-ویدئو
Using glass bead for both the brick wall and concrete patio, we were able to remove the stains. For the brick wall we used 138 cfm, 40 psi, 1 in. hose and #8 nozzle. On the concrete patio, we used 159 cfm, 50 psi, 1 in. hose and #8 nozzle.