This product completely consistent with national and industry technical specification and standard as follows:

1. GB/T9138-1988
2. JJG817-93
3. JGJ/T23-2001

HT-225 Concrete Test Hammer applied to inspect compressive strength for general building components, bridges and all kinds of concrete components (include in slabs, beams, columns, bridges for concrete).

Measuring strength ranges: 10-60MPa
Normal impact energy: 2.207J(0.225Kgf. M)
Strike hammer stroke: 75mm
The friction force of pointer slider: 0.5N± 0.8N
Spherical radius of strike rod: 25mm± 1mm
The rebound values calibrated on steel anvil: 80± 2 Dimensions: Φ 54*278mm
Weight: ≈ 1Kg