| http://www.w3.org/ns/prov#value | - McWane, Inc. is one of the world's largest manufacturers of iron water works and plumbing products and one of America???s largest privately owned companies.[1] The company manufactures products including ductile iron pipe and fittings, fire hydrants, cast iron soil pipe and fittings, and related products.[2] McWane is also a manufacturer of pressurized cylinders for the storage of propane and othe
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