Northwest Pipe Company

Manufacturing Capacity:
Welded steel pipe in sizes from 18" to 144" for piling and 24" to 144" OD for water with material thickness ranging from 0.134" to 1.000".

Capabilities, Products & Services:
Full-service welded steel pipe manufacturer offering comprehensive engineering and estimating services.

Production capabilities include 2 spiral-weld mills, complete fabrication, as well as linings and coatings as described below.

Spiral-weld Steel Pipe
(Laser-guided double-submerged arc welded)

• Sizes: 18" OD through 144" OD
• Wall thickness: 0.134" through 1.0"
• Hydro-tested lengths: 40', 45' and 50'
• Non-hydro-tested lengths: 175' or 40K lbs. Max
• Bargeable Length: Up to 175'
• Ultrasonic and radioscopic: 100% Ultrasonic tested spiral weld per API 5L, RT Full Radiographic (x-ray)

Plate Rolling & Welding:
From 18" to 120" diameter
Up to 1/2" plate wall thickness
Up to 8' wide plates

Typical Manufacturing Specifications:

• AWWA C200
• ASTM A134, A139, A252

End Treatments:
Rolled groove O-ring gasketed bell and spigot, weld bell and spigot, mitered weld bell, Victaulic weld-on and roll groove, flanged and flexible couplings, Carnegie bell and spigot, square cut, plain end, beveled ends.

Linings and Coatings:
Linings

• C205 Cement-mortar: Sizes 24" through 96" NSF Certified
• C210 Liquid Epoxies: Sizes 24" through 120"
• C222 Polyurethane: Sizes 24" through 120"
• Specialty paints: Sizes 24" through 120"

Coatings

• C209/214 Polyethylene Tape: Sizes 24" through 120"
• C210 Liquid Epoxies: Sizes 24" through 120"
• C218 Primer, Specialty Paint: Sizes 24" through 120"
• C222 Polyurethane: Sizes 24" through 120"

Available Shipping:
Truck, Rail and Barge (Containers shipments available for International)

Facility Description:
143,000 square feet of covered manufacturing space on 82 acres, located near Parkersburg, in Washington, West Virginia on the Ohio River.

Northwest Pipe Company

183 Northwest Drive
Washington, WV 26181
(304) 863-3316

Operations Manager: Herschel Petty (304) 863-3316 x4803
Regional Sales Manager: Tom Baas (312) 587-8702