Ngā Painga o te Whakamahi i ngā Paipa Rino Whakarewahia Ā-Pōro ASTM A252

Whakaahuatanga Poto:

He mea nui te whiriwhiri rauemi i te wā e hanga ana i ngā paipa mō ngā momo ahumahi. Ko ngā paipa maitai porowhita kua whakarewahia, inā koa ko ērā i hangaia kia rite ki ngā paerewa ASTM A252, kua rongonui mō ngā tono maha nā ōna painga maha.

Tukua mai he īmēra ki a mātou

Taipitopito Hua

Ngā Tohu Hua

Ko tētahi o ngā painga matua o te whakamahi i te paipa maitai whakarewa porowhita ASTM A252 ko tōna kaha me tōna roa. Ka taea e ēnei paipa te tu atu ki ngā pēhanga teitei me ngā kawenga taumaha, he mea tino pai mō te tuku hinu me te hau, te kawe wai me ngā tono hanganga. Mā te tukanga whakarewa porowhita e whakamahia ana i roto i te hanga ka whakarite kia kaha, kia ōrite hoki te hononga, ka taea ai e te paipa te tu atu ki ngā taiao uaua.

Āhuatanga Mīhini

	Tau 1	Tau 2	Tau 3
Te Pūtake Hua, te kaha hua rānei, min, Mpa(PSI)	205(30 000)	240(35 000)	310(45 000)
Kaha kume, min, Mpa(PSI)	345(50 000)	415(60 000)	455(66 0000)

Tātaritanga Hua

Kaua te maitai e neke atu i te 0.050% te whākawa.

Ngā Rerekētanga e Whakaaetia ana i roto i ngā Taumaha me ngā Ine

Me paunatia motuhake ia roa o te puranga paipa, ā, kaua tōna taumaha e neke atu i te 15% neke atu, i te 5% rānei i raro i tōna taumaha matapae, mā te tatau i tōna roa me tōna taumaha mō ia wae roa.

Kaua te whānui o waho e neke atu i te ±1% mai i te whānui o waho kua tohua

Ko te matotoru o te pakitara i tetahi wāhi kaua e neke ake i te 12.5% i raro i te matotoru o te pakitara kua tohua

Roa

Roa matapōkere takitahi: 16 ki te 25 putu (4.88 ki te 7.62m)

Roa matapōkere takirua: neke atu i te 25 putu ki te 35 putu (7.62 ki te 10.67m)

Ngā roa ōrite: te rerekētanga e whakaaetia ana ±1inihi

Haunga te kaha,ngā paipa maitai kua whakapirihia ki te porowhita ASTM A252He tino ātete ki te waikura. He mea nui tēnei mō ngā paipa e pāngia ana e ngā āhuatanga taiao kino, e ngā matū waikura rānei. Mā te paninga tiaki o ēnei paipa ka kaha ake te ātete ki te waikura, ka roa ake te ora o ā rātou mahi, ka iti ake hoki ngā utu tiaki.

Hei tāpiri atu ki tēnā, e mōhiotia ana ngā paipa maitai ASTM A252 kua whakarewahia ki te porowhita mō tōna maha o ngā mahi me te ngāwari o te tāutanga. Ka taea te whakarite ngāwari i ōna hoahoa ngāwari kia tutuki ai ngā whakaritenga kaupapa motuhake, ā, nā tōna āhua mama ka māmā ake te whakahaere me te kawe. Nā tēnei ka waiho hei whiringa utu-pai mō ngā momo tono maha, nā te mea ka taea te tāuta tere me te whai hua, ka whakaiti i te mahi me te wā hanga.

Ko tētahi atu painga o te whakamahi i te paipa maitai whakarewa porowhita ASTM A252 ko tōna pumau ki te taiao. He mea hanga mai i ngā rauemi hangarua, ka taea te whakamahi anō, te whakamahi anō rānei i te mutunga o te wā whai hua o ēnei paipa, ka whakaiti i te pānga taiao whānui o te hanganga me te tiaki i ngā paipa. Hei tāpiri, ko tōna roa o te ora me te iti o ngā whakaritenga tiaki ka whai wāhi ki tētahi hanganga pumau me te pai ki te taiao.

Hei whakamutunga, he maha ngā painga o ngā paipa rino ASTM A252 kua whakapirihia ki te porowhita, ā, koinei te whiringa tuatahi mō te hanga paipa. Nā te kaha nui, te roa, te ātete ki te waikura, te maha o ngā whakamahinga me te pumau o te taiao, he mea tino pai mō ngā momo mahi i roto i ngā ahumahi rerekē. Mā te whiriwhiri i ēnei paipa, ka taea e ngā kaiwhakawhanake kaupapa te whakarite i tētahi pūnaha paipa pono, pumau hoki e tutuki ana i ngā paerewa kounga me te mahi teitei.