Hydraulically efficient ribbed pipe

Details Hydraulically efficient ribbed pipe Hydraulically efficient ribbed pipe

1995-10-16

1998-06-02

Brinson, Patrick F.

Pipes and tubular conduits

Spirally seamed

138173, 138129, 138122, F16L 916

Patent

active

057586950

ABSTRACT:
A pipe formed from a continuous, cold rolled, lock seam quality, sheet steel, having a spiral rib. The pipe may be protected by an abrasion or corrosion resistant coating. The pipe is normally used for storm drains, culverts, sewer lines or HVAC. A closed spiral rib formed in the pipe wall adds strength to the wall, while maintaining a smooth inner wall that promotes exceptionally good fluid flow. The pipe has a smooth interior surface with outwardly projecting structural ribs of helical configuration throughout the length of the pipe.

REFERENCES:
patent: 4161811 (1979-07-01), Nyssen
patent: 4279965 (1981-07-01), Elmqvist

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