Langry RH225-A Rebound Concrete Test Hammer

• Concrete Strength Test,
• Brand: LANGRY
• Model: RH225-A
• Country of Origin: China

Product Specifications  

The Langry RH225-A Rebound Concrete Test Hammer (also known as Schmidt hammer or sclerometer) is a mechanical, analog non-destructive testing (NDT) device designed for quick on-site estimation of compressive strength in ordinary concrete structures (10–70 MPa range). Manufactured by Jinan Langry Detection Technology Co., Ltd. (China), this rebound concrete test hammer follows the classic Schmidt principle: a spring-loaded plunger impacts the surface, and the rebound distance indicates surface hardness, correlating to strength via charts or formula

• Product Features

• Imported high-quality springs are more fatigue-resistant, aluminum alloy spring seat snap ring assembly.
• Adopt CNC machining centers and other machine tools to refine the movement.
• Silicone bracket for soft hand protection.
• Finely grind the spherical zero-setting screws to make the rebound firing smoother.

Components

rebound hammer

Hand protector silicone hand rest

A grinding stone

One maintenance kit

instrument case

Key Specifications

• Impact Energy: 2.207 J (standard for Type N hammers)
• Compressive Strength Range: 10–70 MPa (1,450–10,152 psi)
• Pointer Friction: 0.65 ± 0.15 N
• Pointer Length: 20.0 ± 0.2 mm
• Spring Stiffness: 785.0 ± 30.0 N/m
• Rebound Value on Anvil: 80 ± 2
• Plunger Radius: 25 ± 1.0 mm
• Weight: ~1 kg
• Case Material: Super-hard 6061 aluminum alloy (abrasion-resistant)