PVC Casing And PVC Hose Knowledge
The PVC casing has a common casing, a flexible head casing, and a waterproof casing.
The ordinary casing - 2-4 centimeters thick than the pipe to be used, is fixed in the wall or in the plate, through which the pipe is passed.
The flexible casing is the sealing effect of the flexible material between the casing and the pipe. Rigid casing is the sealing effect between the casing and the pipe with rigid material sealing.
Waterproof casing - is the use of the casing of the environment is to prevent liquid leakage or leakage into place (such as the pool, septic tanks, basement, etc.) is on the outer wall of the bushing is not less than 1 times increase waterproof wing, this wall is poured in the casing as a whole, not because of swelling shrinkage factor and crack and leakage. PVC casing is often tested on its pressure. When the pipe is tested, the hydrostatic pressure of the hydrostatic test shall not be less than the internal pressure of the design, and shall not be less than 0.8Mpa. U-PVC tube axial line expansion coefficient than the metal pipes, pressure test interface will slip out of 2-5MM, so the pressure test must meet the requirements of the backfill compaction, pipe piers reach the design strength, back safe, at the same time, to observe the interface pressure, to ensure the smooth progress of the pressure test, to ensure the quality of the project.
PVC rubber management knowledge:
1. rubber tube is made of special synthetic rubber. It has excellent oil resistance, heat resistance and aging resistance.
2. the pressure of the rubber tube is high and the pulse performance is superior.
The 3. tubes are tightly combined and soft, and the deformation is small under pressure.
4. hose with excellent flexibility and fatigue resistance.
5. rubber tube is made of special synthetic rubber. It has excellent oil resistance, heat resistance and aging resistance.
6. the pressure of the rubber tube is high and the pulse performance is superior.
The 7. tubes are tightly combined and soft, and the deformation is small under pressure.
8. hose with excellent flexibility and fatigue resistance.
9. wire braided hose length, with more than 32 length 20 meters, ten meters diameter below 25 Kelianda even more than one hundred meters.