Synthetic resin underground pipe having high pressure-withstandi

Details Synthetic resin underground pipe having high pressure-withstandi Synthetic resin underground pipe having high pressure-withstandi

1990-05-09

1991-04-16

Bryant, III, James E.

Pipes and tubular conduits

Spirally seamed

138105, 138122, 138153, 138173, 138174, F16L 1111

Patent

active

050074628

ABSTRACT:
A synthetic resin pipe intended for underground use having an increased strength but reduced wall thickness. In accordance with the invention, a reinforcing member, in the form of a perforated belt, is embedded in or fused to the resin material of the pipe and extends along top portions and at least portions of the side walls adjacent to the top portions of the corrugations of the pipe.

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patent: 4759389 (1988-07-01), Suek

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