H-3820.XX
Test Sand, ASTM 20-30
Sand is specially graded natural silica sand to pass a No. 20 (850µ) sieve
H-3825.XX
Ottawa Test Sand for Cube Molds
Sand is specially graded natural silica sand
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Sand is specially graded natural silica sand to pass a No. 20 (850µ) sieve
Sand is specially graded natural silica sand
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