He mea hanga te ngongo parahi mai i te 99.9% parahi parakore me ngā huānga whakarewa iti, ā, e tutuki ana i ngā paerewa ASTM kua whakaputaina. He mārō, he ngawari hoki, ko te tikanga o muri mai kua whakamahanahia te paipa hei whakangawari. Ka honoa ngā ngongo mārō mā roto i ngā hononga capillary. Ka taea te hono i ngā ngongo i ētahi atu huarahi, tae atu ki ngā hononga kōpeketanga me ngā mura. He mea hanga ēnei e rua i roto i te āhua o ngā hanganga kore hononga. Ka whakamahia ngā paipa parahi ki ngā mahi paipa, HVAC, pouaka whakamātao, tuku hau hauora, pūnaha hau kōpeketanga me ngā pūnaha cryogenic. Haunga ngā paipa parahi noa, kei te wātea hoki ngā paipa whakarewa motuhake.
He āhua rerekē te kupu mō ngā paipa parahi. Ina takai te hua, ka kiia i ētahi wā ko te ngongo parahi nā te mea ka tāpiri i te ngāwari me te ngāwari o te piko o te rauemi. Engari ehara tēnei rerekētanga i te mea e whakaaetia whānuitia ana, e whakaaetia ana rānei. Waihoki, ko ētahi paipa parahi pakitara totoka tika ka kiia i ētahi wā ko ngā paipa parahi. Ka rerekē pea te whakamahinga o ēnei kupu i ia kaihoko, i ia kaihoko.
He rite tonu ngā paipa katoa engari ko te rerekētanga o te matotoru o te pakitara, ko te ngongo-K te pakitara matotoru rawa, nō reira ko te teitei rawa o te pēhanga. Ko te 1/8″ te iti iho o ēnei paipa i te diameter o waho, ā, e wātea ana i ngā rahi mai i te 1/4″ ki te 12″, he mea kumea (mārō) me te mea whakamahana (ngāwari). Ka taea hoki te takai i ngā paipa pakitara matotoru e rua ki te diameter ingoa o te 2 inihi. E toru ngā momo kua tohua e te kaihanga: kakariki mō K, kikorangi mō L, me te whero mō M.
He pai ngā momo K me L mō ngā tono pēhanga pērā i ngā pūwero hau me te tuku hau māori me te LPG (K mō raro whenua, L mō roto). He pai ngā momo e toru mō te tuku wai kāinga (momo M te pai), te whakawhiti wahie me te hinu (momo L te pai), ngā pūnaha HVAC (momo L te pai), ngā tono korehau me te maha atu.
He angiangi ngā pakitara o ngā ngongo waikeri, para me te hauhautanga, ā, he iti ake te pēhanga. Kei te wātea i ngā rahi noa mai i te 1-1/4″ ki te 8″ me te kōwhai. Kei te wātea i ngā roa tika 20-putu, engari he maha ngā wā ka wātea ngā roa poto ake.
Ko ngā ngongo e whakamahia ana hei whakawhiti i ngā hau hauora he momo K, he momo L rānei, me ngā whakaritenga parakore motuhake. Me tango te hinu e whakamahia ana hei hanga i ngā ngongo kia kore ai e mura i te aroaro o te hāora, kia ora ai hoki te tūroro. I te nuinga o te wā ka monohia ngā paipa ki ngā mono me ngā taupoki i muri i te horoinga, ā, ka pania ki te hauota i te wā e tāuta ana.
Ko ngā paipa e whakamahia ana mō te hauhautanga me te pouaka whakamātao ka tohua e te diameter o waho tuturu, he mea rerekē tēnei i roto i tēnei rōpū. Ko ngā rahi kei waenga i te 3/8″ ki te 4-1/8″ mō ngā tapahi tika, me te 1/8″ ki te 1-5/8″ mō ngā koiri. I te nuinga o te wā, he teitei ake te pehanga o ēnei paipa mō te diameter kotahi.
Kei te wātea ngā paipa parahi i roto i ngā momo koranu mō ngā tono motuhake. Ka taea e ngā ngongo parahi beryllium te tata ki te kaha o ngā ngongo koranu maitai, ā, nā te kaha ngenge ka tino whai hua rātou i roto i ngā tono motuhake pēnei i ngā ngongo Bourdon. He tino ātete te koranu parahi-nikara ki te waikura i roto i te wai moana, ā, he maha ngā wā ka whakamahia ngā ngongo i roto i ngā taiao moana he painga anō te ātete ki te tipu o te parāoa. Ko te Parahi-Nikara 90/10, 80/20 me te 70/30 ngā ingoa noa mō tēnei rauemi. He maha ngā wā ka whakamahia ngā ngongo parahi kore-hāora tino kaha ki ngā arataki ngaru me ērā atu mea. Ka taea te whakamahi i ngā ngongo parahi kua pania ki te titanium i roto i ngā whakawhiti wera waikura.
E ai ki te kōrero i mua ake nei, he ngāwari te hono i ngā paipa parahi mā te whakamahi i ngā tikanga whakamahana pērā i te whakarewa me te whakapūmau. Ahakoa he rawaka, he watea hoki ēnei tikanga mō ngā mahi pērā i te tuku wai o te whare, mā te whakamahana ka wera te paipa kua kumea, ka heke ai tōna pēhanga. He maha ngā tikanga miihini e wātea ana kāore e whakarerekē i ngā āhuatanga o te paipa. Kei roto i ēnei ko ngā hononga mura, ngā hononga awaawa, ngā hononga kōpeketanga me ngā hononga pana. He tino whai hua ēnei tikanga whakapiri miihini i ngā wā kāore e haumaru te whakamahi i te mura, i te wera rānei. Ko tētahi atu painga ko te ngāwari o te tango i ētahi o ēnei hononga miihini.
Ko tētahi atu tikanga, e whakamahia ana i ngā āhuatanga me puta mai ngā manga maha i te paipa matua kotahi, ko te whakamahi i tētahi taputapu whakaputa hei waihanga i tētahi putanga tika ki roto i te paipa. Me whakapiripiri te hononga whakamutunga ki tēnei tikanga, engari kāore e hiahiatia te whakamahi i ngā hononga maha.
E whakarāpopoto ana tēnei tuhinga i ngā momo paipa parahi. Mō ētahi atu kōrero mō ētahi atu hua, tirohia ā mātou aratohu kē atu, tirohia rānei te Thomas Sourcing Platform ki te kimi i ngā puna tuku pea, ki te tiro rānei i ngā taipitopito hua motuhake.
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