manufactured · input

Ductile iron pipe and fittings (DIP)

Centrifugally cast ductile iron pipe for water distribution mains; standard sizes 3-64 inch; cement-mortar lined; ANSI/AWWA C151; McWane Inc. and American Cast Iron Pipe (ACIPCO) manufacture virtually all US ductile iron water pipe; approximately 60% of US water mains are ductile iron

Source countries

Companies

Goods affected

Claims on record

What depends on it

Goods that need this input

1 essential American goods rely on ductile iron pipe and fittings (dip) somewhere upstream in their supply chain.

Logistics

Water infrastructure supplies

Pipes, pumps, valves, meters, and treatment equipment for municipal and private water systems.

Where it comes from

Source countries

Share of global supply, by country.

Country	Share of supply
CNChina	35%
INIndia	20%
USUnited States	12%
FRFrance	8%
JPJapan	6%
DEGermany	4%
BRBrazil	3%

Who makes it

Supplier companies

10 companies produce ductile iron pipe and fittings (dip).

McWane Inc. (Manchester Tank)

HQ US55% share

Privately held US industrial manufacturer; parent of Manchester Tank & Equipment Co. Manchester Tank (founded 1946, Franklin TN HQ) manufactures steel and aluminum DOT cylinders and ASME pressure vessels. Facilities: Bedford IN, Crossville TN, Elkhart IN, Quincy IL, Campbellsville KY (new), Echuca Australia, Chile (two locations). Makes residential propane tanks 120-1,000 gallons and DOT cylinders. McWane also manufactures water and sewer pipe products, fire hydrants, and other municipal infrastructure — Manchester Tank is one of several diverse industrial manufacturing businesses. New Campbellsville KY facility opened to serve growing demand for residential propane tanks.

American Cast Iron Pipe Company (ACIPCO)

HQ US28% share

Second-largest US ductile iron pipe manufacturer; employee-owned trust since 1922 (James Bowron willed the company to its workers); produces AMERICAN ductile iron pipe, fittings, and fire hydrants; consistently rated among the best US employers due to profit-sharing; operates primarily from its single large Birmingham foundry complex.

Xinxing Ductile Iron Pipes Co., Ltd.

HQ CN12% share

Largest Chinese DIP manufacturer; 1.2M tpa capacity across 8 production bases; 45% China domestic share; exports to 120+ countries; 2025 Egypt plant

Saint-Gobain PAM

HQ FR10% share

European market leader in ductile iron pipe; 75% of European sales from French facilities; invested in low-carbon electric furnace; 18% capacity expansion 2024

McWane Ductile

HQ US8% share

US market leader; 3 foundries (Birmingham AL, Youngstown OH, Ogden UT); founded 1921; significant recent capacity investments; ANSI/AWWA C151 certified

Electrosteel Castings Limited

HQ IN7% share

Largest DIP manufacturer in Indian subcontinent; 700,000 tpa across 5 facilities; pioneer of spun pipe tech in India (1994); exports to 130+ countries

Kubota Corporation (Iron Pipe Division)

HQ JP6% share

Two Japan plants: Hanshin (Hyogo) and Keiyo (Chiba); Keiyo is only global facility mass-producing 9m-long DIP; JV with TATA Metaliks in India

Jindal SAW Ltd.

HQ IN5% share

Angul Odisha: 600,000 tpa (Indias largest single-location DIP plant, 2005); March 2023 new foundry +40% capacity; market leader in India water/wastewater

TATA Metaliks

HQ IN5% share

Kharagpur India plant; 500,000 tpa hot metal capacity; expanding to 400,000 tpa DIP in two phases; advanced automation; former JV with Kubota

U.S. Pipe and Foundry Company

HQ US5% share

125+ year history; AWWA C151-certified; water distribution focus; part of US DIP oligopoly with McWane and ACIPCO

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