Isheduli 40 Vs Sheduli 80 Ipayipi le-PVC: Umehluko, Izilinganiso Zokucindezela Futhi Indlela Yokukhetha

Isheduli 40 kanye nepayipi lePVC leSheduli 80 libukeka licishe lifane ngaphandle. Kusayizi othile onikeziwe, womabili abelana ngobubanzi obufanayo bangaphandle, ngakho alingana amasokhethi afanayo. Umehluko udonga: Uhlelo 80 lushubile, olunikeza isilinganiso sokucindezela okuphezulu futhi luyenze ifanelekele ukucushwa, kuyilapho iShedyuli 40 inikeza ibhore enkulu kanye nezindleko eziphansi. Lo mhlahlandlela uchaza ukuthi lezi zinto zombili ziqhathaniswa kanjani nokuthi zingakhethwa kanjani.

Isheduli 40 vs Sheduli 80 Ipayipi le-PVC ngokubuka nje

Kusho ukuthini 'Uhlelo' Kupayipi le-PVC?

Inombolo yeshejuli iyisigaba sokuqina kodonga esizuzwe njengefa embonini yamapayipi ensimbi. Epayipini lokucindezela le-PVC, i-ASTM D1785 ifaka amaShejuli 40, 80 kanye no-120. Kusayizi ngamunye wegama ububanzi bangaphandle buyafana kuzo zonke izinhlelo, futhi udonga olungeziwe lwengezwe ngaphakathi. Lokhu kuvumela ukufakwa kwe-diameter eyodwa yangaphandle. Ukufakwa kwezisekelo zeSheduli 40 kulandela i-ASTM D2466, futhi ukufakwa kwezisekelo zeSheduli 80 kulandela i-ASTM D2467.

Ngaphandle kweNyakatho Melika, ipayipi lokucindezela le-PVC livame ukucaciswa yisigaba somfutho we-metric (PN), njenge-PN10 noma i-PN16. Gcina ipayipi nokufakwa ngaphakathi kwesistimu efanayo.

Ukuqina Kwezindonga Nezilinganiso Zokucindezela

Izilinganiso zokucindezela zisekelwe epayipini le-PVC elakhiwe ekucacisweni kwe-ASTM D1785 ku-73°F (23°C). Ingcindezi yangempela yokusebenza evumelekile ingase ihluke kuye ngesigaba sempahla yamapayipi, imininingwane yomkhiqizi, izinga lokushisa lokusebenza nezimo zesevisi.

Amapayipi amakhulu anezilinganiso eziphansi. I-ASTM D1785 ibala isilinganiso njengo-P = 2S / ((Yenza/t) − 1), lapho u-S ewukucindezeleka komklamo we-hydrostatic, Yenza isilinganiso esimaphakathi sangaphandle kanye t nodonga oluncane. Ngaphakathi kweshejuli eyodwa, isilinganiso se-diameter-to-wall sikhula ngosayizi, ngakho isilinganiso siyehla. 'Uhlelo 40' ngakho-ke akuyona inombolo yokucindezela eyodwa; hlola njalo isilinganiso sosayizi wakho oqondile.

Indlela Izinga Lokushisa Ezithinta Ngayo Isilinganiso Sokucindezela se-PVC

Izilinganiso ezingenhla zisebenza ku-73°F. Ipayipi lomfutho we-PVC livamise ukuba nezinga lokushisa eliphezulu lesevisi elicishe libe ngu-140°F (60°C), kuye ngomkhiqizi kanye nokucaciswa komkhiqizo, futhi umthamo walo uyehla njengoba izinga lokushisa likhuphuka. Idatha yezobuchwepheshe ye-Charlotte Pipe, isibonelo, ibonisa cishe u-62% wesilinganiso esingu-73°F ku-100°F, u-40% ku-120°F no-22% ku-140°F. Udonga oluqinile aluwushintshi lo mkhawulo, ngakho-ke alukho uhlelo oluhloselwe amanzi ashisayo. Ngokusatshalaliswa kwamanzi ashisayo, sebenzisa okokusebenza okulinganiselwe kuwo, njenge-CPVC (embozwe yi-ASTM F441/F441M, ngosimende wayo oncibilikayo).

Isheduli 40 noma iSheduli 80? Khetha ngohlelo lokusebenza

Isheduli 80 inodonga olujiyile, olunikeza isilinganiso sokucindezela okuphezulu kanye nokumelana okukhulu nezingcindezi ezithile zemishini zangaphandle ngaphansi kwezimo ezifanayo. Hlala ulandela ukucaciswa kwephrojekthi kanye nekhodi yendawo yamapayipi.

Uchungechunge Nokuxuba Amashejuli

Uchungechunge. I-threading isusa izinto zodonga futhi kunciphisa umthamo wokucindezela. Ishejuli engu-40 ye-PVC ngokuvamile ayinconywa ekuxhumekeni kwentambo. Ipayipi leSheduli 80 noma elisindayo lingaxhunywa uma kuvunyelwa umenzi, kusetshenziswe ukuncishiswa okufanele (abanye abakhiqizi bacacisa u-50%).

Ukuxuba. Isheduli 40 kanye ne-80 ingahlanganiswa nosimende ofanayo we-solvent ngoba amadayamitha awo angaphandle ayahambisana. Kodwa-ke, ukufakwa kungase kube nezilinganiso zokucindezela ezihlukile ezivela kumapayipi ahambisanayo, futhi isistimu inqunyelwe ingxenye yayo enesilinganiso esiphansi kakhulu. Qinisekisa ingcindezi elinganiselwe yomkhiqizi futhi uqiniseke ukuthi wonke amapayipi, okokufaka kanye nevalvu kuhambisana nezimo zokusebenza.

Amathiphu okufaka

• Funda ukumaka ipayipi. Ibonisa usayizi, ishejuli, isilinganiso esijwayelekile kanye nengcindezi.

• Lungiselela amalunga ngendlela efanele. Sika isikwele, khipha ama-burrs, bese usebenzisa i-primer kanye ne-solvent Cement (ASTM D2564) ngokwemiyalelo yomkhiqizi usimende futhi uvumele isikhathi sokwelapha esigcwele ngaphambi kokuhlolwa.

• Vikela ekukhanyeni kwelanga. Penda i-PVC engaphezulu komhlaba ngopende we-latex osuselwe emanzini noma usebenzise ipayipi elenziwe nge-UV.

• Ungalokothi uhlole ngomoya ocindezelweyo noma igesi. Ukwehluleka kungase kuqhume. Hlola ngamanzi.

Amazinga Abalulekile

• I-ASTM D1785: Ipayipi lokucindezela le-PVC, Amashejuli 40, 80 no-120 (izinga elibusayo lalokhu kuqhathanisa)

• I-ASTM D2665: Ipayipi le-PVC, imfucuza kanye nepayipi lokukhipha umoya, izinga elihlukile kune-D1785

• I-ASTM D2466 / D2467: Isheduli 40 / Ukufakwa kwezisekelo zeSheduli 80

• I-NSF/ANSI 14 kanye ne-61: izingxenye zamapayipi epulasitiki nezingxenye zesistimu yamanzi okuphuza

Qinisekisa amazinga nezitifiketi ezidingekayo emakethe yakho ngaphambi kokuthi u-ode.

Kungani Khetha i-Huasheng ye-PVC Piping Systems?

U-Huasheng ungumkhiqizi wezinhlelo zamapayipi epulasitiki, onikelayo Ipayipi le-PVC, Ukufakwa kwe-PVC nama-valve ezimbonini nasezisetshenziswa zengqalasizinda. Ukufakwa kwethu kwe-PVC kuyatholakala ngokucaciswa okuningi, okuhlanganisa i-ASTM Schedule 40, i-ASTM Schedule 80, i-DIN PN10 ne-DIN PN16. Ngebanga lomkhiqizo obanzi namandla okwenza ngokwezifiso i-OEM, sisekela amakhasimende aphesheya ekutholeni izingxenye ezithembekile.

Uma ucela ikhotheshini, sitshele usayizi wegama, ingcindezi yokusebenza kanye nezinga lokushisa, okujwayelekile (ishejuli ye-ASTM noma i-metric PN), umbala, ubuningi kanye nanoma yisiphi isitifiketi osidingayo, ngakho ipayipi nokufakwa kunikezwa njengesistimu efanisiwe. Xhumana nethimba lethu ukuze uqalise.

imibuzo ejwayelekile ukubuzwa

1.Ingabe ipayipi lePVC leSheduli 80 linamandla kunoHlelo 40?
Inezinga eliphezulu lokucindezela ngosayizi ofanayo ngenxa yodonga lwayo olubanzi. Okungcono kuncike ekusetshenzisweni, ingcindezi, izinga lokushisa kanye nezimo zokufaka.

2.Ingabe iShejuli 40 kanye neSheduli 80 zingasebenzisa ukufakwa okufanayo?
Yebo, ama-diameter angaphandle ayafana. Isilinganiso sesistimu silandela ingxenye yayo enesilinganiso esiphansi kakhulu.

3.Ingabe ipayipi lePVC leSheduli 80 linobubanzi obuncane bangaphakathi?
Yebo. Ngobubanzi obufanayo bangaphandle, udonga olukhulu lunciphisa ububanzi bangaphakathi nendawo yokugeleza.

4.Ingabe ipayipi le-PVC likaSheduli 40 lingaxhunywa?
Ngokuvamile akunconywa. Ishejuli 80 iwukukhetha okuvamile kokuxhunywa kwentambo, kusetshenziswe ukuncishiswa komkhiqizi.

5.Ingabe ipayipi lePVC lingasetshenziselwa amanzi ashisayo?
Cha. Ipayipi lomfutho we-PVC livamise ukuba nezinga lokushisa eliphezulu lesevisi elingu-140°F. Sebenzisa okokusebenza okukalelwe amanzi ashisayo, njenge-CPVC.

Isiphetho: Yiluphi Uhlelo Okufanele Ulukhethe?

Buza imibuzo emithathu. Ingabe ipayipi lizofakwa uchungechunge? Ingabe ingcindezi nezinga lokushisa lizofinyelela umkhawulo oncishisiwe Wokushejuli 40? Ingabe ukufakwa kuhilela ukucindezeleka komshini? Uma impendulo yakho bobathathu ingucha, iSheduli 40 ivamise ukukhetha ukonga. Uma noma iyiphi impendulo inguyebo, cabanga ngoSheduli 80 futhi uqondanise nokufakwa kwakho kuyo.

Imithombo: ASTM D1785; I-ASTM D2665; I-ASTM F441/F441M; Idatha yezobuchwepheshe ye-Charlotte Pipe kanye ne-Foundry Company.