(1) He kupu whakataki ki ngā rauemi paipa maitai tui kore:
GB/T8162-2008 (paipa maitai kore hononga mō te whakamahinga hanganga). E whakamahia ana mō ngā hanganga whānui me ngā hanganga mīhini. Ko ōna rauemi e tohu ana (ngā taumata): maitai waro Nama 20, maitai Nama 45; maitai koranu Q345, 20Cr, 40Cr, 20CrMo, 30-35CrMo, 42CrMo, me ētahi atu.
GB/T8163-1999 (paipa maitai kore hononga mō te kawe wai). E whakamahia ana mō te kawe paipa wai i roto i ngā taputapu hangarau me ngā taputapu nui. Ko ngā rauemi e tohu ana (ngā taumata) ko te 20, Q345, me ētahi atu.
GB3087-2008 (paipa maitai kore-tui mō ngā kōhua ​​pēhanga iti me te pēhanga waenga). E whakamahia ana i roto i ngā paipa hei kawe i ngā wai pēhanga iti me te pēhanga waenga i roto i ngā kōhua ​​ahumahi me ngā kōhua ​​whare. Ko ngā rauemi e tohu ana ko te maitai Nama 10 me te Nama 20.
GB/T17396-2009 (paipa maitai kore-honohono kua hurihia wera mō ngā tautoko waipēhi). Ko te nuinga o te wā ka whakamahia hei hanga tautoko waipēhi, rango me ngā pou i roto i ngā maina waro, tae atu ki ētahi atu rango me ngā pou waipēhi. Ko ōna rauemi e tohu ana ko te 20, 45, 27SiMn, me ētahi atu.
(2) Ngā Whakamahinga o ngā Paipa Rino Tuitui: 1. Ko ngā paipa momo hangahanga ko: ngā paipa raro whenua mō te kawe, te tango wai whenua i te wā e hanga whare ana, te kawe wai wera i roto i ngā pōro, me ētahi atu. 2. Te tukatuka miihini, ngā ringaringa whāriki, ngā taputapu mīhini tukatuka, me ētahi atu. 3. Te hiko: te tuku hau, ngā paipa wai whakaputa hiko. 4. Ngā paipa ārai-pūmau mō ngā tipu hiko hau, me ētahi atu.