Hōʻike ʻia ka nui o ka paipu me ʻelua mau helu ʻokoʻa:
Nominal Pipe Size (NPS) no ke anawaena ma muli o nā iniha.
Helu Hōʻike (SCH e kuhikuhi i ka mānoanoa o ka pā o ka Pipe.
Pono ka nui a me ka papa manawa e kuhikuhi pololei i kahi ʻāpana paipu.
Nominal Pipe Size (NPS) ʻo ia ka North American Set o nā nui maʻamau no nā paipu i hoʻohana ʻia no ke kiʻekiʻe a me ka haʻahaʻa haʻahaʻa a me nā mahana.Aia kekahi kūkākūkā hou no kēia.
ʻO ka Iron Pipe Size (IPS) kahi maʻamau ma mua o ka NPS e koho i ka nui.ʻO ke anawaena o loko o ka paipu ma nā ʻīniha ka nui.Hoʻokahi mānoanoa o kēlā me kēia paipu, kapa ʻia (STD) Kūlana a i ʻole (STD.WT.) Kaumaha Kūlana.He 3 wale no ka manoanoa o ka paia ia manawa.I Malaki 1927, ua hana ka American Standards Association i kahi ʻōnaehana i koho i ka mānoanoa o ka pā ma muli o nā ʻanuʻu liʻiliʻi ma waena o nā nui a hoʻokomo i ka Nominal Pipe Size i pani i ka Iron Pipe Size.
Helu papa helu no ka mānoanoa o ka paia mai SCH 5, 5S, 10, 10S, 20, 30, 40, 40S, 60, 80, 80S, 100, 120, 140, 160, STD, XS (Kei aku ka ikaika) a me ka XXS ikaika).
Paipu a me ka paipu hua'ōlelo
BPE - Paipu Plain Plain End
BTC - Uila ʻeleʻele a hui pū ʻia
GPE – Wehe Plain Plain
GTC - Uila Uila & Hoʻohui ʻia
TOE – Hoʻokahi Hopena Uila
Paipu Paipu & Hoʻopau:
Galvanized - Uhi ʻia me ka uhi zinc pale ma luna o ke kila e pale aku ai i ka ʻeleʻele.Hiki i ke kaʻina hana ke wela-dip-galvanizing kahi i hoʻokomo ʻia ai ka mea i loko o ka zinc hoʻoheheʻe ʻia a i ʻole Electro-Galvanized kahi i hoʻoulu ʻia ai ka pale kila kahi i hana ʻia ai ka paipu i ka wā o ka hana ʻana e ka hopena electro-chemical.
ʻAʻole i uhi ʻia - Pipe i uhi ʻole ʻia
I uhi ʻeleʻele – Uhi ʻia me ka hao-oxide ʻeleʻele
ʻulaʻula mua –Ua hoʻohana ʻia ʻo Red Oxide Primed ma ke ʻano he kapa kumu no nā metala ferrous, hāʻawi i ka hao a me ke kila i kahi papa o ka pale.
