PPR is a type of polypropylene plastic pipe that has several advantages over another plastic pipe. The PPR piping solutions are used in residential sectors and commercial plumbing zones (e.g. PVC and CVPC).

The following are the key areas of consideration:

• Proper excavation and preparation of the trench inhibit unanticipated longitudinal and cross-sectional strains and stresses in the pipe. The buried pipe is sensitive to uniformity of the type and density of the material of the trench bottom and sidewalls. Unexpected pockets or reaches of rocks, boulders or low-density soils encountered in the excavation should be reported. Shorter sections of pipe should bridge the transitions where different foundation soils meet to avoid differential settlements being resisted by the pipe.
• Water flowing along the exterior of the pipe is expected to erode compacted trench backfill and/or trench sidewall support for the pipe. In the case of the free-draining granular trench in groundwater of any form, intermittent impervious trench dams (or plugs) of compressed cohesionless materials are included to make the flow of water still.
• Uniform compaction of embedment materials along the length of the pipe disperse the reaction beneath the pipe and inhibit excessively large deflections of the pipe’s cross-section. Lastly, to assure proper soil densities, trench braces, we recommend removing the shields and boxes.
• Uniform support for the pipe is essential. To prevent the likelihood of heavy and excessive “point” loads to these joints clearance is provided at protruding joints (bell and spigot, wrap-around joint couplings) of the pipe.
• The inspection helps ensure that the pipe is installed according to project requirements. The installation integrity can usually be verified with a visual inspection or CCTV in inaccessible situations. Deflection tests using mandrels are an alternative.
• Watertight and other systems may require pressure testing according to recognized procedures after installation to verify performance.

Consequently, the major advantages are stability, durability (up to 50 years) and leak resistance. With excellent chemical stability, PPR piping solutions can guarantee the overall stability of the product in the face of highly corrosive and permeable materials.

The benefit makes it highly available for the chemical industry, and is used for pipeline construction of chemical products and has a long service life.

The other fields of application include:

• Hydraulic solutions in residential, industrial projects
• Compressed air systems (air-conditioning)
• Compressed air systems (air-conditioning)
• Agriculture (watering systems for greenhouses and gardens)

PPR pipes have strong durability and excellent resistance to friction and pressure.

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