Ductile-Iron Pipe and Fittings

Ductile-Iron Pipe and Fittings

AWWA ductile-iron pipe and fitting standards cover the C100 series, which address a variety of materials in use of pipe construction such as cement mortar, polyethylene, rubber gaskets, and gray iron in many forms of gaskets, castings, and specifications. These standards cover proper testing and general requirements for use in transporting potable water, waste water, and reclaimed water.

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AWWA C104/A21.4-2022

Cement-Mortar Lining for Ductile Iron Pipe and Fittings

The purpose of this standard is to provide the minimum requirements for shop-applied cement–mortar linings for ductile-iron pipe and ductile-iron and gray-iron fittings for potable water, raw water, wastewater, and reclaimed water systems, including requirements for cement, sand, water, and mortar; surface of pipe and fittings for lining; method and thickness of lining; and curing.

AWWA C105/A21.5-2018

Polyethylene Encasement for Ductile-Iron Pipe Systems

The purpose of this standard is to provide the minimum requirements for polyethylene sheet and tubes to be used for external corrosion protection of buried ductile-iron pipe, fittings, and appurtenances.

AWWA C110-2021

Ductile-Iron and Gray-Iron Fittings

This standard covers 3- to 48-in. (76- to 1,219-mm) gray-iron and/or ductile-iron fittings to be used with ductile-iron pipe for water.

AWWA C111/A21.11-2023

Rubber-Gasket Joints for Ductile-Iron Pressure Pipe and Fittings

The purpose of this standard is to provide the minimum requirements for rubber-gasket joints for ductile-iron pressure pipe and ductile-iron and gray-iron fittings, including requirements and inspection.

AWWA C115/A21.15-2025

Flanged Ductile-Iron Pipe with Ductile-Iron or Gray-Iron Threaded Flanges

The purpose of this standard is to provide the minimum requirements for flanged ductile-iron pipe with ductile-iron or gray-iron threaded flanges.

AWWA C116/A21.16-2022

Protective Fusion-Bonded Coatings for the Interior and Exterior Surfaces of Ductile-Iron and Gray-Iron Fittings

The purpose of this standard is to provide purchasers, manufacturers, and applicators with the minimum requirements for fusion-bonded coatings and linings for the interior and exterior of fittings.

AWWA C150/A21.50-21 (R2023)

Thickness Design of Ductile-Iron Pipe

The purpose of this standard is to provide the minimum requirements for the thickness design of ductile-iron pipe, including basis of design and design procedure.

AWWA C151/A21.51-2023

Ductile-Iron Pipe, Centrifugally Cast

The purpose of this standard is to provide the minimum requirements for ductile-iron pipe, centrifugally cast, for potable water, raw water, wastewater, and reclaimed water systems.

AWWA C153/A21.53-2025

Ductile-Iron Compact Fittings

The purpose of this standard is to provide the minimum requirements for ductile-iron compact fittings, 3?in. through 64 in. (80 mm through 1,600 mm), for potable water, wastewater, and reclaimed water service.

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