| http://www.w3.org/ns/prov#value | - In each case, the helical convolutions of each strip are completely coated and encapsulated with the structural epoxy resin and the strips are helically wound one over the other about the longitudinal axis of the pipe with the helical convolutions of each strip being offset with respect to the helical convolutions of the next adjacent strip so that in cross section, such as shown in FIG. 1, the st
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