Paipa maitai paiherea: He paipa maitai me te tui ki runga i te mata o te takai maitai, te pereti maitai ranei kua piko, kua paheke ki te ahua porohita, ki te ahua tapawha ranei.Ko te pakitara o roto o te paipa paiherea he riu riu.Ko nga hua matua ko: ERW paipa maitai, LSAW paipa maitai me SSAW paipa maitai.Ko te putorino maitai he ahua o te maitai roa tuwhera, e whakamahia ana hei awa mo te kawe wai, penei i te hinu, te hau maori, te wai, te hau, te mamaoa, me era atu.