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PE (click to download)
Polyethylene materials of the 60's and
70's and even early 80's were classified in terms of their
densities (i.e.) High Density, Medium Density and Low Density.
At the time, the density of Polyethylene reflected its strength
and its ability to resist internal pressure.
Latest developments in Polyethylene synthesis and advances in
molecular designs have changed even the nomenclature of
Poluethylene.
Today, Poluethylene irrespective of is density
value is classified according to its MRS value (MRS= minimum
required strength) which is a measure of the stress that the
polymer material can resist.
The most commonly used pressure pipe material are the following:
PE 100 MRS = 10.0 MPa
PE 80 MRS = 8.0 MPa
PE 63 MRS = 6.3 MPa |
