Izinhlamvu Zepayipi Lensimbi Dimension 3:
Incazelo ephelele yobukhulu bepayipi lensimbi ihlanganisa ububanzi obungaphandle (OD), ukujiya kodonga (WT), ubude bepayipi (Ngokuvamile amamitha angu-20 ft 6, noma 40 ft 12 amamitha).

Ngalezi zinhlamvu singabala isisindo sepayipi, ukuthi ipayipi lomfutho elingakanani elingathwala, kanye nezindleko ngonyawo noma imitha.
Ngakho-ke, yingakho sidinga njalo ukwazi usayizi wepayipi ofanele.

Ishadi Lobukhulu Bepayipi Lensimbi

Iyunithi Yeshadi Leshejuli Yepayipi ngo-mm njengezansi, buka lapha ukuze uthole Ishadi Leshejuli Yepayipi ngamayintshi.

Izindinganiso zobukhulu zepayipi lensimbi
Kunamazinga ahlukene okuchaza usayizi wepayipi lensimbi, i-OD nokuqina kodonga. Ikakhulukazi i-ASME B 36.10, ASME B 36.19.

Ukucaciswa okujwayelekile okuhambisanayo ASME B 36.10M kanye ne-B 36.19M
Kokubili i-ASME B36.10 kanye ne-B36.19 yizici ezijwayelekile zobukhulu bepayipi lensimbi nezinye izinto.

I-ASME B36.10M
Izinga lihlanganisa ukulinganisa nobukhulu bepayipi lensimbi. Lawa mapayipi ahlanganisa izinhlobo ezingenamthungo noma ezishiselwe, futhi asetshenziswa ekushiseni okuphezulu noma okuphansi nezingcindezi.
Ipayipi elihlukanisiwe neshubhu (Ipayipi vs Ishubhu), lapha ipayipi ngokukhethekile amasistimu amapayipi, uketshezi (Uwoyela negesi, amanzi, udaka) ukuhanjiswa. Sebenzisa izinga le-ASME B 36.10M.
Kuleli zinga, ipayipi Ububanzi Ongaphandle buncane kuno-12.75 ku-(NPS 12, DN 300), amadayamitha angempela wepayipi makhulu kune-NPS (Usayizi Wepayipi Lokuqamba) noma i-DN (Ububanzi Bamagama).

Esandleni, ngobukhulu beshubhu lensimbi, ububanzi bangaphandle bangempela buyafana nenombolo yepayipi yabo bonke osayizi.

Iyini ishejuli yobukhulu bepayipi lensimbi?
Ishejuli yamapayipi ensimbi iyindlela ekhombisayo emelelwa yi-ASME B 36.10, futhi isetshenziswa kwamanye amazinga amaningi, amakwe ngokuthi “Sch”. I-Sch isifinyezo seshejuli, ngokuvamile esivela kuzinga lepayipi lensimbi laseMelika, okuyisiqalo senombolo yochungechunge. Isibonelo, i-Sch 80, 80 iyinombolo yepayipi esuka kushadi/ithebula ASME B 36.10.

“Njengoba ipayipi lensimbi elisetshenziswa kakhulu kuwukuthutha uketshezi ngaphansi kwengcindezi, ngakho-ke ububanzi bawo bangaphakathi ubukhulu bawo obubucayi. Lo sayizi obalulekile uthathwa njenge-nominal bore (NB). Ngakho-ke, uma ipayipi lensimbi lithwala uketshezi ngomfutho, kubaluleke kakhulu ukuthi ipayipi libe namandla anele kanye nogqinsi olwanele lodonga. Ngakho ukujiya kodonga kucaciswe Kumashejuli, okusho uhlelo lwepayipi, elifushanisiwe ngokuthi SCH. Lapha i-ASME iyindinganiso nencazelo enikeziwe yeshejuli yamapayipi.”

Ifomula yeshejuli yepayipi:
I-Sch.=P/[ó]t×1000
P ingcindezi Eklanyelwe, amayunithi ku-MPa;
[ó]t Ingcindezi evunyelwe yezinto ezisetshenziswayo ngaphansi kwezinga lokushisa lokuklama, Amayunithi ku-MPa.

Isho ukuthini i-SCH ngobukhulu bepayipi lensimbi?
Njengoba sichaza ipharamitha yepayipi lensimbi, sivame ukusebenzisa ishejuli yepayipi, Kuyindlela emelela ukushuba kodonga lwamapayipi ngenombolo. Ishejuli yamapayipi ( sch. ) ayilona ukujiya kodonga, kodwa uchungechunge lokujiya kodonga. Isheduli yamapayipi ehlukene isho ukujiya kodonga okuhlukile kwepayipi lensimbi elinobubanzi obufanayo. Izinkomba zeshejuli ezivame kakhulu yi-SCH 5, 5S, 10, 10S, 20, 20S, 30, 40, 40S, 60, 80, 80S, 100, 120, 140, 160. Uma inombolo yetafula iba nkulu, ingaphezulu liyajiya. udonga lwamapayipi, ukuphakama kokumelana nokucindezela.

Uhlelo 40, 80 steel pipe dimension kusho
Uma umusha embonini yamapayipi, kungani uhlala ubona isimiso sepayipi yensimbi engu-40 noma engu-80 yonke indawo? Hlobo luni lwempahla yala mapayipi?
Njengoba ufunde izindatshana ezingenhla uyazi ukuthi uHlelo 40 noma 80 lumelela ukushuba kodonga lwamapayipi, kodwa kungani luhlala luseshwa ngabathengi?

Nasi isizathu:
Isheduli ye-40 kanye ne-80 yepayipi yensimbi njengamasayizi ajwayelekile adingekayo ezimbonini ezahlukene, ngenxa yokucindezela okujwayelekile kwalawa mapayipi, ahlala ecelwa inani elikhulu.

Izinga lempahla yamapayipi anjalo awugqinsi alinamikhawulo, ungacela ipayipi lensimbi engagqwali elingu-sch 40, njenge-ASTM A312 Grade 316L; Noma i-sch 40 carbon steel pipe, njenge-API 5L, ASTM A53, ASTM A106B, A 179, A252, A333 njll.

Uyini Usayizi Wepayipi Lokuqamba (NPS)?
Usayizi Wepayipi Lokuqamba (NPS) isethi yaseNyakatho Melika yosayizi abajwayelekile bamapayipi asetshenziselwa ukucindezela okuphezulu noma okuphansi kanye namazinga okushisa. Usayizi wepayipi ucaciswe ngezinombolo ezimbili ezingezona ntathu: usayizi wepayipi lokuzisholo (NPS) osuselwe kumayintshi, kanye neshejuli (Sched. noma Sch.).

Yini i-DN (Nominal Diameter)?

Ububanzi begama bubuye busho ububanzi bangaphandle. Ngoba njengoba udonga lwamapayipi luncane kakhulu, ububanzi bangaphandle nangaphakathi bepayipi yensimbi bucishe bufane, ngakho-ke inani elijwayelekile lamapharamitha womabili lisetshenziswa njengegama lobubanzi bepayipi. I-DN (ububanzi obujwayelekile) ububanzi obujwayelekile bezinsiza ezihlukahlukene zamapayipi namapayipi. Ububanzi obufanayo bepayipi kanye nokufakwa kwamapayipi kungaxhunywa, kunokuguquguquka. Nakuba inani liseduze noma lilingana nobubanzi bangaphakathi bepayipi, akuwona umqondo wangempela wobubanzi bepayipi. Usayizi wegama umelwe uphawu lwedijithali olulandelwa uhlamvu “DN”, bese umaka iyunithi ngamamilimitha ngemva kophawu. Isibonelo, i-DN50, ipayipi enobubanzi obungu-50 mm.

Pipe Weight Class Isheduli
Isigaba se-WGT (isigaba sesisindo) siyinkomba yokujiya kodonga lwamapayipi ekuqaleni, kodwa lusasetshenziswa. Inamabanga amathathu kuphela, okuyi-STD ( standard ), XS ( extra strong ), kanye ne-XXS ( double extra strong).
Epayipini lokukhiqiza langaphambili, izinga ngalinye linencazelo eyodwa kuphela, ebizwa nge-standard tube (STD). Ukuze ubhekane noketshezi olunomfutho ophezulu, ipayipi elijiyayo (XS) livele. Ipayipi le-XXS ( elinamandla aphindwe kabili) libonakale liphatha uketshezi olunomfutho ophakeme. Abantu baqala ukudinga ukusetshenziswa kwepayipi elinomsoco elikhudlwana elinodonga oluncane kuze kube yilapho kuvela ubuchwepheshe obusha bokucubungula izinto, bese kubonakala kancane kancane inombolo yepayipi engenhla. Ubudlelwano obuhambisanayo phakathi kweshejuli yamapayipi nesigaba sesisindo, kubhekiselwa ku-ASME B36.10 kanye nokucaciswa kwe-ASME B36.19.

Ungachaza kanjani ubukhulu bepayipi lensimbi ngendlela efanele?
Isibonelo: a. Kuvezwe “njengepayipi elingaphandle kwedayamitha × ukujiya kodonga”, njengokuthi Φ 88.9mm x 5.49mm (3 1/2” x 0.216” ). 114.3mm x 6.02mm (4 1/2” x 0.237”), ubude 6m (20ft) noma 12m (40ft), Single Random Length (SRL 18-25ft), noma Double Random Length (DRL 38-40ft).

b. Ivezwe ngokuthi “NPS x Isheduli”, i-NPS 3 intshi x I-Sch 40, i-NPS 4 iyintshi x I-Sch 40. Usayizi ofanayo nokucaciswa okungenhla.
c. Kuvezwe njengokuthi “NPS x WGT Class”, NPS 3 intshi x SCH STD, NPS 4 intshi x SCH STD. Usayizi ofanayo ngenhla.
d. Kukhona enye indlela, eNyakatho Melika naseNingizimu Melika, kuvame ukusebenzisa i- "Pipe Outer Diameter x lb/ft" ukuchaza usayizi wamapayipi. Njengo-OD 3 1/2”, 16.8 lb/ft. lb/ft iphawundi ngezinyawo.