Northwest Pipe Company provides solution-based products for a wide range of markets including water transmission and infrastructure, water and wastewater plant piping, trenchless technology, and piping rehabilitation.

As the largest manufacturer of engineered steel water pipe systems in North America, Northwest Pipe Company has been setting the standard for excellence in engineering and manufacturing performance expectations since 1966.

Our commitment to on-time delivery and project performance is backed by our dedication to continuous improvement and multi-state facilities with ISO 9001:2015 certifications. With the most experienced and knowledgeable industry personnel, we provide excellent client service and competitive pricing through operational efficiencies and large buying power.

In addition to engineered welded steel pipe water systems, Northwest Pipe produces Permalok® steel casing pipe, bar-wrapped concrete pipe, and precast and reinforced concrete products through Geneva Pipe and Precast. Additional products include custom linings, coatings, joints, and one of the largest offerings of fittings and specialized components in North America. Our manufacturing facilities are located in Adelanto, California; Parkersburg, West Virginia; Portland, Oregon; Saginaw, Texas; St. Louis, Missouri; Tracy, California; and San Luis Río Colorado, Mexico. Our Geneva plants are located in Orem, Salt Lake City, and St. George, Utah, with the headquarters located in Vancouver, Washington.

As a publicly-held company, we are fiscally responsible and able to competitively complete projects of any size for water transmission, water and wastewater plant piping, trenchless technology, rehabilitation, pipe relining, and industrial applications all manufactured to industry standards.

National Force with Regional Focus

We base our national prominence on quality, service, and manufacturing to meet performance expectations in all categories including highly corrosive environments. With a regional sales staff who understand local conditions and regulations, we provide support and prompt delivery to even the most remote job sites. Following our firm-wide values of Accountability, Commitment, Teamwork, and Safety, we commit to providing the highest quality pipe in North America.


Manufacturing Legacy Propelled by Innovation

Originally known as Northwest Pipe & Casing, Northwest Pipe Company started operations in 1966, with just three steel pipe mills and 20 employees in Clackamas, Oregon. Initially focused on agriculture and the then-booming wood products market, the company grew to become a major West Coast producer of steel pipe for the water market.

Pacific Northwest Heritage

In our early days, we embarked on a limited growth strategy with the purchase of a pipe manufacturing plant in Portland, Oregon, and construction of a new tubular plant in Kansas to focus on agricultural and sprinkler pipe. In 1987, a group of investors purchased the majority of Northwest Pipe’s stock and provided the necessary capital for further expansion. When we opened our new Southern California production facility three years later, we had a multi-million dollar backlog of orders and a sizable share of the rapidly developing Southern California market.

Stock Offering Expands Opportunity

A public stock offering in 1995 furthered investment opportunity and the company expanded with many acquisitions of competing pipe manufacturers in Colorado, California, Texas, Louisiana, and West Virginia. Additionally, we constructed a propane tank facility in Monterrey, Mexico, and installed an API tube mill at our Portland, Oregon plant. By the end of the decade, Northwest Pipe Company was the only coast-to-coast producer of spiralweld steel pipe for the water transmission industry.

Defining Our Market

The economic conditions of the early 2000s significantly affected the tubular products segment resulting in some plant closures and consolidations. In 2008 we moved our corporate headquarters to Vancouver, Washington, and from 2010 through 2013 the company continued its efforts to enhance and optimize performance. To strengthen and diversify our core business of water transmission, Northwest Pipe acquired Permalok®. This acquisition gave us access to the trenchless technology and steel casing pipe market. In 2018, we consolidated our two Permalok® manufacturing facilities to our St. Louis, Missouri location to eliminate redundant overhead. We also began manufacturing Permalok® at our Adelanto, California location, in order to increase utilization of existing assets and further our access to the West Coast trenchless market.

In July 2018, Northwest Pipe Company wholly acquired Ameron Water Transmission Group, LLC, a major supplier of engineered welded steel pressure pipe and reinforced concrete pipe. In addition to combining two companies with strong traditions in the water transmission business, this acquisition added bar-wrapped concrete pipe and reinforced concrete pipe to our product portfolio. The transaction included pipe operation facilities in Tracy, California and San Luis Río Colorado, Mexico.

Positioned for Growth

In early 2020, the Company acquired Geneva Pipe, Inc., a concrete pipe and precast concrete products manufacturer based in Utah. This acquisition added additional reinforced concrete pipe capacity and a full line of precast concrete products, including reinforced concrete pipe, manholes, catch basins, vaults, and curb inlets as well as a lined manhole and pipe product that pairs precast concrete with a corrosion resistant liner for sanitary sewer applications.

Furthering our foothold into the precast infrastructure market, the Company acquired Park Environmental Equipment, LLC in late 2021. Operating as ParkUSA with a three-plant base in Texas, the water technology company develops, manufactures, and distributes water and wastewater solutions products. Much of the product line is custom engineered and built with pre-assembled components ready to install at the jobsite. This strategic acquisition strengthens our product capabilities within the water infrastructure market to offer stormwater and wastewater management technology.

Looking forward, Northwest Pipe Company strives to improve value to the company’s shareholders, employees, and all other stakeholders.

Adhering to Our Principles

Culture drives leadership decisions and the future direction of our firm.