| http://www.w3.org/ns/prov#value | - An apparatus for uniformly expanding the ends of sections of pre-formed and pre-heated plastic pipe which comprises;cooperating die means for retaining said sections of pre-heated plastic pipe, said die means including an open central portion having a cross-sectional diameter corresponding with the outer diameter of said sections of pre-heated plastic pipe, sothat said sections of pre-heated plast
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