Through the performance test of FRPP pipe, it is determined whether the FRPP pipe meets the safety conditions. With the increase of FRPP pipe demand, FRPP pipe application is more and more, so the safety performance of FRPP pipe is getting higher and higher. Pipeline safety performance is tested from the following aspects:
(A) Compressive strength:
(B) Sealability:
(C) Corrosion resistance: divided into 4 grades under uniform corrosion conditions, measured by annual corrosion rate:
Fully resistant to corrosion ≤0.05mm;
Corrosion resistance>0.05~0.1mm;
Corrosion resistance >0.1~0.5mm;
Not resistant to corrosion >0.5mm;
(D) Flexibility: The flexibility of the FRPP pipe is a physical concept that reflects the difficulty of pipe deformation. When the pipeline is working under the design conditions, due to thermal expansion and contraction, additional displacement of the end point, improper installation of the pipeline support, etc., excessive stress, deformation, leakage or damage may affect the normal operation. The flexibility of the pipeline is the displacement of the pipeline through its own deformation to absorb dimensional changes due to temperature changes or other reasons, to ensure the performance of the stress on the pipeline within the allowable stress range of the material.
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