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Business > Construction and Maintenance > Materials and Supplies > Site Construction > Pipes and Fittings > Associations

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Concrete (8)
Plastic (9)

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American Water Works Association (AWWA) - http://www.awwa.org
National organization for clean water and water distribution systems. Develops standards for water pipes and hosts a supplier directory of pipe manufacturers for all materials.

DIPRA - Ductile Iron Pipe Research Association - http://www.dipra.org/
Manufacturers association supported by the Ductile Iron pressure pipe manufacturers in North America.

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