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Steel balls spheres complying to astm c 131 c131 m astm c 535 12 pc

Per ASTM Method D-3744. c Per ASTM Method C-289. d Silt = % 200 mesh or 75 /jmP. Per modified ASTM Method C-136. e Per modified ASTM Method E-384. Average of 20 Indentations per polished section. ' Per ASTM Methods C-29 and C-128. 8 Dimensionless. Weighted average per ASTM Method D-3398. h Samples exposed to simulated traffic

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