![]() U.S. Pipe U.S. Pipe (also known as United States Pipe and Foundry) is a company that provides water and wastewater products. | ![]() Perma-Pipe Perma-Pipe International Holdings (formerly known as MFRI) is a company that engineers, designs, manufactures, and sells specialty piping and leak detection systems. | ![]() Revex Technologies Revex Technologies is a company engaged in the processing and production of nickel and other critical minerals for clean energy transition. | |
Founding Date | Founding Date 1899 | Founding Date 1993 | Founding Date 2023 |
Type | Type Subsidiary | Type Public | Type Private |
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Locations | Locations The Woodlands, US HQ Calgary, CA Al Shorouk, EG Mithi Rohar, IN Mumbai, IN Dubai, AE Lebanon, US see more | Locations Houghton, US HQ | |
Employees | Employees 6172% increase | Employees 7508% decrease | Employees 5 |

Perma-Pipe International Holdings (formerly known as MFRI) is a company that engineers, designs, manufactures, and sells specialty piping and leak detection systems.
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Revex Technologies is a company engaged in the processing and production of nickel and other critical minerals for clean energy transition.
View company