Ring Stiffness Testing Machine

Ring stiffness testing machines are widely used to determine the ring stiffness of thermoplastic pipes and glass fiber reinforced plastic pipes with annular cross-sections, by measuring the force and deformation values at a constant speed. They feature speed adjustment via buttons, digital display of test force and displacement, and curve diagram display. They also include peak value retention, automatic shutdown upon specimen failure, and automatic protection against overcurrent and overload. These machines can perform tests on ring stiffness, ring flexibility, flattening, bending, and weld tensile strength. Ring stiffness testing machines offer all the functions of electronic universal testing machines and can be equipped with fixtures for tension, compression, bending, and shear testing, suitable for various material tests.

1. Test Standards Met:

GB/T9647 "Determination of Ring Stiffness of Thermoplastic Pipes"

GB/T19472.1 "Polyethylene (PE) Structured Wall Pipe Systems for Underground Applications - Part 1: Polyethylene Double Wall Corrugated Pipes"

GB/T19472.2 "Polyethylene (PE) Structured Wall Pipe Systems for Underground Applications - Part 2: Polyethylene Double Wall Corrugated Pipes"

GB/T16800 "Rigid Polyvinyl Chloride (PVC-U) Pipe with Cellular Core for Drainage"

GB/T 18477 "Rigid Polyvinyl Chloride (PVC-U) Double-Wall Corrugated Pipes for Underground Drainage"

GB/T 21238 "Glass Fiber Reinforced Plastic Sand-Filled Pipes"

GB/T 165 "High-Density Polyethylene Spiral Wound Structure Wall Pipes"

GB/T 838 "Glass fiber reinforced thermosetting resin sand夹sand pressure pipe"

in accordance with the provisions of standards such as GB/T 16491 and GB/T 5836

2. Main Technical Parameters:

1. Maximum test force: 0-300 kN (optional)

2. Measurement Range: 2% to 100% of the test force

3. Testing machine accuracy class: Class 1 / Class 0.5

4. Test force accuracy: better than ±1% of the indicated value

5. Crossbeam displacement measurement: resolution of 0.01 mm

6. Deformation accuracy: better than ±1%

7. Speed adjustment range: 0.05-500 mm/min

8. Test Space: Customizable

9. Host Structure: Gantry Frame Structure