... ,column,beam,truss. Used in civil engineering,construction,etc HT-225A Concrete Rebound Strength TesterDescription: When testing the strength ... building strength and bridge. Compared to other nondestructive testers, HT-225A concrete strength tester is an economical and practical instrument ... ASTM C 805, ASTM D 5873, NFP 18-417, B 15-225, JGJ/T 23-2001, JJG 817-1993Dimension60x280mmNet weight1kgStandard ...