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A pipe feeder is a conveyor-based machine that applies continuous axial force to push large-diameter steel pipelines through pre-bored ground — without stopping, without friction spikes, and without open excavation. Unlike cylinder-based pushers that work in strokes, the UNI-PF250 uses a 4-track conveyor to maintain uninterrupted pipe movement across river, road, and railroad crossings from 20 to 56 inches in diameter.

The key difference between a conveyor pipe feeder and a cylinder pipe pusher is continuous vs stroke-based movement. Cylinder systems stop and reset every 3–10 feet, creating static friction spikes that stress the pipe and destabilize the bore. The UNI-PF250 conveyor system moves the pipe without interruption — eliminating spikes, protecting pipe integrity, and reducing installation time on crossings of 20–56 inch steel pipeline.

The UNI-PF250 is a 200-short-ton conveyor-based pipe feeder built by Universal HDD in Lake Zurich, Illinois. It supports steel pipelines from 20 to 56 inches, delivers 200 short tons continuous and 250 short tons peak force, requires no crane for installation, and ships in 3 modular units. It is used in HDD pullback, microtunneling, pipe jacking, and Direct Pipe® tunneling. Lead time is 16–18 weeks. Full specs available at unihdd.com.