Technical Information

Heat Expansion Qualities   Aging & Time Resistance   Certifification

Plypipe is a composite of 5 layers. The innermost & outside layers are high-density polyethylene (HDPE). These layers are tightly bonded with melt adhesive to the mid-layer aluminium core.

This pipe is not only extremely robust, long-lasting & Oxygen impermeable but also smooth-walled, toxin-free & highly resistant to the growth of microorganisms.

General Technical Properties

Pipe Diameter	16.2
Minimum Burst Pressure	5 MPa
Minimum Pipe Ring Strength	2500n
Long Term Hydro-Static Strength	25MPa
Thermal Conductivity	0.45W/m.k
Coefficient Of Heat Expansion	25x10-6m/m.k
Roughness Coefficient	0.0007mm
Burning Resistance	B1/GB8624

Heat Expansion

Plypipe has a very small expansion co-efficient as can be seen from the graph. On a 50m length at 50 degrees celsius difference the expansion is only 59.50mm compared with 500mm for PEX & 450mm for PP. In fact Plypipe behaves closer to a metal pipe than any of its plastic counterparts in this respect.

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Longevity

Weathering & aging tests show Plypipe to have a very long life-span, out performing single material piping in retained strength by a wide margin. After 50 years it is estimated still will have a pressure resistance capability of 2MPa. (1MPa= 1 MegaPascal=10 bar)

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Certification

Plypipe has been widely & certified by National Authorities world-wide

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Plumbing and Mechanical Codes

Plypipe piping systems are recognized generically as composite pipes in the following Model Codes.

• Canadian Plumbing Code
• Uniform Plumbing Code
• International Plumbing Code
• International Residential Code
• International Mechanical Code