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Updated: October 1, 2026
The different makers of soil pipe generally used by plumbers hereabouts are: Mott & Company, Abendroth, Blakslee, Dighton, Phillips & Weeden, and Bartlett, Hayward & Co. On 4" extra heavy pipe my results have been as follows: Percentage passed as good, single hub. 60 per ct. to 70 per ct. Percentage passed as good, double. 20 per ct. to 80 per ct.