Method of manufacturing prestressed concrete pipe

Plastic and nonmetallic article shaping or treating: processes – Forming stressed concrete articles

Patent

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Details

138176, 264256, 264311, B28B 2310, B28B 2312, F16L 908

Patent

active

041138236

ABSTRACT:
A method of manufacturing prestressed concrete pipe which comprises arranging a reinforcing cage in a form, casting expansive concrete within the form in such a manner that the reinforcing cage is disposed outwardly of the center of the wall thickness of the concrete layer, and then forming the pipe centrifugally.

REFERENCES:
patent: 3467144 (1969-09-01), Rice
patent: 3654968 (1972-04-01), Mizuma

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