Smooth Interior Corrugated Steel Pipe
Dura-FlowTM pipe, a smooth interior corrugated steel pipe, combines a standard corrugated exterior shell with a hydraulically smooth liner. The liner is continuously attached to the exterior shell along the lock seam. Smooth lined corrugated steel pipe has been available in the industry since the 1970’s. It is currently approved by AASHTO, ASTM, Federal Highway Administration, the Corp’s of Engineers and seversal DOT’s, including Michigan and Indiana.
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Dura Flow Specifications