供应防火圈
When used the fire
barrier ring is fixed on the external face of PVC pipe Which is on the floororwall When fire happens the core material of fire barrier ring expands quickly to extrude the PVC-U pipeline Which had been heated to become soft in the fire and the pipe will be sealed in a short time.So the fi re will be prevented from spreading to up-floorornext room The product has been tested by the National Fireproof Building
Material Quality Monitoring and Testing Center the results showed tha
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09/20 20:36