I ngā tau kua taha ake nei, i mimitihia, i whāia hoki e tā mātou pakihi ngā hangarau matatau i te kāinga me tāwāhi. I tēnei wā, kei tā mātou kamupene tētahi rōpū tohunga e aro nui ana ki te whakatairanga i te wheketere ngaio mō Haina SSAW API 5L Psl2 X52 10″X Sch80. Kāore mātou e mutu te whakapai ake i ā mātou tikanga me te kounga teitei hei āwhina i a mātou ki te whai i te whanaketanga o tēnei ahumahi me te whakatutuki i ō hiahia. Mena kei te hiahia koe ki ā mātou taonga, tēnā waea mai ki a mātou.
I ngā tau kua taha ake nei, i mimitihia, i tātarihia hoki e tā mātou pakihi ngā hangarau matatau i te kāinga me tāwāhi. I tēnei wā, kei tā mātou kamupene tētahi rōpū tohunga e aro nui ana ki te whakatairanga i a koePaipa Whakarewa Haina, Paipa Rino, e tino tumanako ana mātou ki te whakatū i tētahi hononga pakihi pai, roa hoki me tō kamupene whakahīhī mā roto i tēnei whai wāhitanga, e ahu mai ana i te ōritetanga, te painga tahi, me te pakihi toa-toa mai i nāianei ki te heke mai. "Ko tō ngākau māhaki tō mātou harikoa".
He mea hanga te paipa whakarewa porowhita mai i te koiri maitai. Ka wetekina te koiri, kātahi ka whakarewahia i a ia e hurihia ana kia rite ki te āhua o te paipa. Ko te whakarerekē i te koki o te porowhita me te matotoru o te koiri anake te mea e hiahiatia ana hei huri i te rahi o tētahi paipa ki tētahi atu. Ka uru ngā taha e rua o te whakarewa pewa rua-rua ki roto i te matotoru katoa o te maitai hei whakarite i te kaha o te paipa kua oti. Kua whakaatuhia e ngā whakamātautau tauine katoa he rite te kaha o te paipa whakarewa porowhita kounga teitei ki te paipa API. Ko te kaha me te ngāwari o te hanga o te paipa whakarewa porowhita he hua pai mō ngā momo tono.

Ko te Paipa SSAW (Spiral Submerged Arc-Welding Pipe), e kiia ana hoki ko te paipa HSAW (Helical SAW), he rite te āhua o te rārangi whakarewa ki te helix. Kei te whakamahi i te hangarau whakarewa ōrite o te Submerged Arc-Welding me te paipa LSAW. Ko te tukanga hanga he huri i te rīpene maitai, kia koki ai te ahunga hurihuri ki te ahunga o te pokapū o te paipa, ka hangaia, ka whakarewahia, kia rite te hononga whakarewa ki te rārangi porowhita.