E aʻo kākou e pili ana i nā paipu kinoea kūlohelohe.

Mea Hana: X42, X52, X60 (API 5L papa kila maʻamau), e pili ana iā Q345, L360, a pēlā aku ma Kina;

Nā Hiʻohiʻona: Kumukūʻai haʻahaʻa, ikaika kiʻekiʻe, kūpono no nā paipu mamao loa (kaomi kiʻekiʻe, nā hiʻohiʻona anawaena nui);

Nā Palena: Pono ka lāʻau anti-corrosion (e like me ka papa anti-corrosion 3PE) e pale aku i ka lepo/ka pala waena.

Nā Paipu Polyethylene (PE)

Mea Hana: PE80, PE100 (māka ʻia e like me ka ikaika hydrostatic lōʻihi);

Nā Hiʻohiʻona: Kūpaʻa i ka palaho, maʻalahi ke kūkulu ʻana (wela hoʻoheheʻe wela), maʻalahi maikaʻi;

Nā Hoʻohana: Ka hoʻolaha ʻana o ke kūlanakauhale, nā paipu pā hale (kaomi waena a me ka haʻahaʻa, nā hiʻohiʻona anawaena liʻiliʻi).

Nā Paipu Kila Kuʻihao

Mea Hana: 304, 316L;

Nā Hiʻohiʻona: Ke kūpaʻa ikaika loa i ka pala;

Nā Hoʻohana: Ke kinoea kūlohelohe me ka nui o ka sulfur, nā kahua kai, a me nā kūlana ʻino kūikawā ʻē aʻe.

Nā Hiʻohiʻona ʻenehana koʻikoʻi

Sila a me ka Hoʻohui:
Nā paipu lōʻihi: ʻO nā pilina i hoʻopili ʻia (kuʻihao arc i hoʻoheheʻe ʻia, kuʻihao pale kinoea) e hōʻoia i ka sila ʻana i ke kaomi kiʻekiʻe;
Nā paipu wai waena a me ke kaomi haʻahaʻa: Nā pilina hoʻoheheʻe wela (nā paipu PE), nā pilina wili (nā paipu kila kalapona/kila kila kila liʻiliʻi).

Nā Hana Palekana i ka ʻAi ʻAi:
Palekana waho i ka palaho: 3PE papa anti-corrosion (nā paipu mamao loa), ka uhi pauka epoxy;
Palekana kūloko no ka palaho: Uhi ʻana i ka paia o loko (hoʻēmi i ka waiho ʻana o ka haumia kinoea kūlohelohe), ka inikini mea hoʻōki palaho (nā paipu wai me ka nui o ka sulfur).

Nā Hale Palekana: I hoʻolako ʻia me nā mea ʻike kaomi, nā kiwikā pani pilikia, a me nā ʻōnaehana pale cathodic (e pale aku i ka pala electrochemical lepo); Ua hoʻolako ʻia nā paipu mamao me nā kikowaena hoʻolaha a me nā kikowaena hoʻēmi kaomi e hoʻokō ai i ka hoʻoponopono kaomi a me ka hoʻolaha kahe.

Nā Kūlana ʻOihana
Honua: API 5L (nā paipu kila), ISO 4437 (nā paipu PE);
Kūloko: GB/T 9711 (nā paipu kila, like me API 5L), GB 15558 (nā paipu PE)