Mena kua uru atu koe ki ngā kaupapa hanga ngongo pou nui, ahakoa mō te hau, mō ngā tauranga, mō ngā piriti rānei, i te wā e whiriwhiri ana i te rauemi paipa me te tikanga hanga, kotahi te huinga e kore e taea te karo: he paipa maitai waro kua whakarārangihia ki te FBE + he whakarewa pewa rua kua rukuhia ki raro.
Kaua e hohoro te titiro ki ngā kōrero tuku iho. Me matapaki tuatahi tātou i tētahi raruraru tūturu e pā ana ki tētahi papa hanga - he tino "raruraru" te taiao o raro i te whenua. He haukū, he ngāwari ki te waikura, ā, he maha ngā huringa o te kawenga. Ka hē te mahi a ngā paipa noa i muri i ētahi tau o te whakamahinga. Koia te take e tahuri haere ana ngā kamupene hangarau kiASTM A252 rarawengā kaihoko ki te hoko mai i ngā rahinga nui ongā paipa puranga diameter nui.
Nō nā tata nei, i kōrero mātou ki tētahi wheketere kua whakatūria i Cangzhou mō tētahi puranga taonga. He mea tika kia whakapuakina tā rātou huarahi.
Kāore e ōrite ana ngā paipa arai roto katoa o te FBE.
Me kōrero tātou mō te FBE. He tokomaha te hunga e mōhio ana ki tēnei mea he paura epoxy piri. Heoi, ko tePaipa maitai waro kua whakakikoruatia ki te FBE He tino kaha ngā whakaritenga mō ngā paipa puranga e whakamahia ana i roto i te piri, te matotoru, me te pāmahana whakapakeke.
Ko te hua e kōrerohia ana e tātou i tēnei wā nō Cangzhou Spiral Steel Pipes Group Co., Ltd. I whakatūria tēnei wheketere i te tau 1993 i Cangzhou, Porowini o Hebei. E 350,000 mita pūrua te rahi o tōna whenua, ā, e 680 miriona yuan te tapeke o āna rawa. E 680 āna kaimahi. E 400,000 tana o ngā paipa maitai porowhita e hangaia ana e rātou i ia tau, ā, e 1.8 piriona yuan te uara whakaputa. Kei roto rātou i ngā taumata teitei i roto i te ao o ngā paipa maitai porowhita me ngā hua pania o te motu.
Ehara i te mea ko ngā paipa maitai waro kua whakakikoruatia ki te FBE i hangaia e rātou he "whakapiri noa i tētahi paparanga paura". Engari, ka tino whakahaeretia e rātou te tere o te raina paninga me te pāmahana i roto i te rohe whakamahana, kia taea ai e te FBE te uru pono ki roto i te mata o te paipa maitai, ka hanga he paparanga tiaki matotoru, tonu, ātete ki te katote.
He aha te take e tika ai kia aro atu ki te tukanga whakarewa mō ngā paipa pou?
He rerekē rawa ngā āhuatanga o te ahotea o ngā paipa poupou i ērā o ngā paipa wai noa. Ko te kaha pānga i te wā e panaia ana te poupou, te kaha tuaka i raro i te kawenga roa, me te taunga koretake o raro i te whenua, me tino pono ngā hononga whakarewa.
Kei tēnei wheketere i Cangzhou te whakamahi i te whakarewa āwhata rua-rua-uru. E mōhio ana te hunga e mōhio ana ki te whakarewa ko te painga nui o tēnei tukanga ko te pai o te hanganga o te hononga whakarewa, he rawaka te hohonutanga rewa, ā, he iti te tere o te hapa o roto. Heoi anō, ko te whakarewa taha-rua he rite ki te whakatakoto "inihua rua" ki te hononga whakarewa, nā te mea ka whakarite kia uru katoa ki roto, ki waho hoki.
Ki te whakataurite ki te whakarewa taha-kotahi, ki te whakarewa porowhita noa rānei, ko ngā paipa puranga nui-diameter i hangaia ewhakarewa pewa rua e rukuhia anahe pai ake te pumau ina pāngia e ngā kawenga hihiri me te piko. He mea nui tēnei mō ngā paipa pou.
Ngā puranga paipa whānui - he aha te tini o te tangata e whiriwhiri ana i ngā hoko rarahi?
Nā, ka tae tātou ki te take i whakahuatia i roto i tā tātou taitara: He aha i hoko ai i ngā paipa DSAW kua whakarārangihia ki te ASTM A252 FBE hei whakairi pou?
He tino māmā te whakautu - te pumau + ngā utu ka taea te whakahaere.
He paerewa motuhake te ASTM A252 mō ngā paipa rino e whakamahia ana mō ngā pou, me ngā whakaritenga mārama mō te kaha tuku, te kaha kume, me te roa. Ka whakaputa tika tēnei wheketere i Cangzhou i ngā paipa pou nui-diameter e ai ki tēnei paerewa, ā, ko rātou anō hoki ngā kaihokohoko rarahi o ASTM A252, ka kore e hiahiatia he takawaenga.
Mō ngā kamupene hangarau, he pai te hoko nui i ngā paipa poupou nui mai i aua kaihanga mō ētahi take. Tuatahi, he ōrite ngā whakaritenga, ā, ka taea te whai i te kounga. Tuarua, he tino whakataetae te utu. Tuatoru, ka taea te whakahaere i te huringa tuku - kāore i te wheketere he 400,000 tana te kaha whakaputa ā-tau, ā, kāore i a ia ngā kaha whakarite whakaputa me ngā kaha rarangi rauemi mata e taea ai e ngā awheawhe iti te taurite.
I roto i te kaupapa tuturu, kei hea ēnei paipa e whakamahia ana?
Anei ētahi āhuatanga tūturu:
Tauranga me te tauranga: Me ātete ngā puranga paipa ki te waikura o te wai. He pai ake te mahi ātete-waikura o ngā paipa maitai waro kua whakakikoruatia ki te FBE i ērā o ngā paipa tahanga noa.
Tūāpapa piriti: He nui ngā whakaritenga e pā ana ki ngā hononga whakarewa. Mā te tukanga whakarewa pewa rua e rukuhia ana ka taea te whakarite kia ōrite te hanganga mō ia ngongo pou.
Te turanga o te pourewa hau: He whānui te diameter, he hohonu te tanu, he roa te mau ki te kawenga. Ko ngā paipa poupou whānui te diameter, e ai ki te paerewa ASTM A252, he mea noa i roto i te umanga.
Ko ngā hua o tēnei wheketere i Cangzhou e tohatohahia ana ki ēnei rohe. Heoi anō, ko tō rātou painga ko te mea ehara i te mea ka hangaia e rātou ngā paipa whakarewa porowhita anake, engari ka whakahaerehia hoki ngā tukanga paninga. He tata ake te hononga o te tukanga whakaputa, ā, ka taea hoki e rātou te whakahaere i te kounga puta noa.
Hei whakarāpopototanga, kāore he kōrero teka.
Mena kei te rapu koe i ngā paipa maitai waro kua whakarārangihia ki te FBE, me ngā whakaritenga tino pakari mō ngā hononga whakarewa (me whakarewa pewa rua i raro i te wai), ā, ki te hiahia tō kaupapa i ngā paipa puranga nui te whānui, ā, kei te rapu koe i tētahi kaihokohoko rarawe pono o te ASTM A252 - he kōwhiringa tika kia āta whakaarohia e koe te Cangzhou Spiral Steel Pipe Group.
Ehara i te mea he tino iti te utu; engari, i roto i tēnei wāhanga, kāore i te maha ngā kaihanga o te whare e taea te whakauru i te kaha whakaputa, ngā tohu mātauranga, ngā tukanga, me te paninga katoa i te wā kotahi.
Nā, he aha koe i whiriwhiri ai ki te hoko i ngā paipa DSAW kua whakarārangihia ki te ASTM A252 FBE hei whakairi pou?
Ko te whakautu māmā koia tēnei: he watea, he tino kaha, ā, ka taea te tu atu ki ngā whakamātautau i te whenua.
Wā tuku: 30 Paenga-whāwhā 2026