He paipa kowakawaka kirihou pakitara-rua
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He paipa kowakawaka kirihou pakitara-rua
Paipa kowakawaka taiapa-rua: he momo putorino hou me te pakitara o waho o te annular me te pakitara o roto maeneene. Ko te nuinga o te waa e whakamahia ana mo te tuku wai nui, te tuku wai, te whakaheke, te whakaheke parakaingaki, te ngongo, te hau o raro, te hau maina, te whakamakuku whenua ahuwhenua me etahi atu me te pehanga mahi i raro i te 0.6MPa. Ko te tae o te pakitara o roto o te pupuhi pakitara-rua he puru me te pango te nuinga o te waa, a ka whakamahia e etahi rama he kowhai.