Long-term durability is assessed by burst pressure tests conducted at constant pressures until rupture. Data plotted on log-log graphs allow statistical derivation of the Minimum Required Strength (MRS), representing 50-year expected strength per ISO standards.
Elongation Testing for Ductility and Processing Quality
Elongation testing measures material ductility, indicative of proper extrusion processing and gelation. Achieving elongations around 80% reflects optimal tie-molecule network formation essential for long-term mechanical stability.
FAQ Section
How is the Minimum Required Strength (MRS) for PVC pipes determined?
Through long-term burst pressure tests and statistical extrapolation over 50 years.
Why is elongation testing important?
It measures ductility and indicates good processing quality and molecular structure.
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Navdeep Singh Chawla
