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NCPI develops and tests the Low-Pressure Air Test.  The new standard, ASTM C828, Recommended Practice for Low-Pressure Air Test of Vitrified Clay Pipe Sewer Lines (4 – 12 in.) is published.

NCPI develops and tests the Low-Pressure Air Test.  The new standard, ASTM C828, Recommended Practice for Low-Pressure Air Test of Vitrified Clay Pipe Sewer Lines (4 – 12 in.) is published.