JJ Test

RCP Test Unit


Rapid crack propagation can occur along pressurized pipelines of polyethylene, if a well-defined critical pressure is exceeded. This instrument is designed to determine the critical pressure or temperature for rapid crack propagation.


RCP is used to determine the critical pressure or critical temperature for rapid crack propagation.

  • Rational structure and accurate impact speed. There is energy storage device in basic unit, which shall convert elastic potential energy into kinetic energy?that the impact speed range can be controlled between 1m/s and 20m/s.
  • Industrial control terminal was introduced and colorful touch screen display provides more information to operator, such as sample pretreatment time, pipe inside current pressure, impact speed, length of crack and test temperature, etc.
  • Fast pressure filling and accurate pressure control. For pipes DN200 to DN500, setting pressure can be arrived within 30s.
  • Thanks to the module design, system can be updated and extended to be suitable for different sizes of pipes.
  • High rigid frame enhance the bearing strength of system and multiple buffers in the frame reduce impact force from the high velocity striker, so that the component connection keep perfect after repeated trials.
  • High-efficiency and reliable energy storage system.Energy storage system with a high storage speed and striker lifting system can be locked firmly or released quickly.
  • The easily adjustable support and the simple assembly & positioning system with quick coupling saves time and has proved to work outstandingly well in operation with samples.
  • Automatic security confirmation system. It means the correct locations of the test sample and the striker blade are identified automatically, so that the collision of the sample assembly with the striker blade is prohibited and the blade will not be released when the sample is not in position.

ISO 13477 《Thermoplastics pipes for the conveyance of fluids
- Determination of resistance to rapid crack propagation (RCP)
- Small-scale steady-state test (S4 test)》

Test pipe sizes ≤Φ315mm or ≤Φ250mm
Impact speed of striker blade 3 selectable speeds (10m/s, 15m/s or 20m/s)Or set speed arbitrarily within 5m/s -15m/s, at the step of 0.5/s
Speed accuracy ±0.5m/s
Pressure Pressure medium Nitrogen(equipped by user)
Range ≤ 2.5 MPa
Accuracy class Grade:0.5
Control mode: PLC control and touch screen display
Striker blade release: Pneumatic
Pneumatic energy storage: Motor-driven
Speed measurement: Independent measurement,serial communication interface
Storage mode: USB Stick
Power supply: 220VAC-15%~220VAC+10% 50Hz 1kVA
Compressed air interface: quick coupling, high pressure hose
Compressed air supply: 4Mpa(equipped by user)
Security protection: IP55
Basic unit Weight 400kg
Dimension (L×W×H) (830×710×2420)mm
External Rail Weight 100kg
Dimension (L×W×H) (3000×370×75)mm
Main controller Weight 50kg
Dimension (L×W×H) (450×500×1300)mm

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