Ellwood Water Treatment Plant
Used as the carrier pipe to encase both a water line and a utility line for this water treatment plant project, Permalok pipe’s ability to support continuous tunneling, as opposed to the ‘stop and weld’ helped this project finish on an expedited schedule.
Homestake Suction Pipeline Replacement
Using a sliplining application, steel pipe replaces sections of an aging concrete water system through the rough terrain of the Continental Divide.
Kearney Lake Road Slipline
An Innovative joint proves successful in critical sprialweld steel pipe slipline project to rehabilitate a deteriorating PCCP water main. The result is a structurally independent system with a 100-year service life.
Metropolitan Water District of Southern California Second Lower Feeder PCCP Rehabilitation Reach 2
To remedy distressed pipeline, Northwest Pipe manufactures steel pipe for system rehabilitation. Using the reliner method, the Metropolitan Water District of Southern California is repairing a critical water line. This cost effective, minimally invasive method eliminates water loss without the need to excavate or install a completely new pipeline system.
Weaverville California State Route 3 Culvert Rehabilitation
The project’s mountainous terrain provided a great environment to introduce our new Permalok® Auger Bore Joint, which requires less jacking force for full joint engagement.
Gilboa Dam Schoharie Reservoir Low Level Outlet
Northwest Pipe manufactured multiple sizes of Permalok including 108” Internal diameter, which is the largest use of Permalok® as a carrier pipe manufactured to date, for this project which supports one of the major reservoirs supplying New York City with a potable water.