Ko ngā whakatakotoranga o ngā paipa maitai waro-rahi te whānui e tautuhia ana e te whānui o waho, te matotoru o te pakitara, te roa, me te kounga o ngā rauemi. Ko ngā whānui o waho kei waenga i te 200 mm ki te 3000 mm. Mā ēnei rahi nui ka taea te kawe i ngā rerenga wai nui me te tautoko hanganga, he mea nui mō ngā kaupapa nui.

E kitea ana ngā painga o te paipa rino hurihuri wera i roto i te tukanga whakaputa: ka hurihia e te hurihuri pāmahana teitei ngā pereki rino hei paipa he matotoru rite te pakitara me te hanganga ā-roto matotoru. Ka taea te whakahaere i tōna whānui o waho i roto i te ±0.5%, e pai ai mō ngā kaupapa he tino uaua ngā whakaritenga ā-rahi, pērā i ngā paipa mamaoa i roto i ngā tipu hiko wera nui me ngā whatunga whakamahana pokapū o te tāone.

Paipa maitai waro Q235mePaipa maitai waro A36he mārama ngā rohe whakaritenga mō ngā momo rauemi rerekē.

1.Paipa maitai Q235Ko te paipa maitai Q235 he paipa maitai hanganga waro noa i Haina. Ko tōna kaha whakaputa he 235 MPa, ā, he matotoru pakitara 8-20 mm te nuinga o te wā e hangaia ana, ā, e whakamahia ana mō ngā tono kawe wai pēhanga iti, pērā i te tuku wai me te rerenga wai ā-tāone, me ngā paipa hau ahumahi whānui.

2.Paipa maitai waro A36Ko te paipa maitai waro A36 te momo maitai matua i te mākete o te ao. He paku teitei ake tōna kaha whakaputa (250MPa) ā, he pai ake te ngāwari. Ko tōna putanga whānui (he 500mm te whānui o waho, neke atu rānei) e whakamahia whānuitia ana i roto i ngā paipa kohikohi me te kawe hinu me te hau, me tu atu ki ētahi pēhanga me ngā rerekētanga pāmahana.