Ububanzi bepayipi De, DN, d ф Incazelo
De、DN、d、ф Uhla lokumelwa olufanele lwe
Ububanzi bangaphandle be-De -- ipayipi le-PPR, ipayipi le-PE kanye nepayipi le-polypropylene
I-DN -- Ububanzi obujwayelekile bepayipi le-polyethylene (PVC), ipayipi lensimbi ephonswe, ipayipi lensimbi elihlanganisiwe lepulasitiki kanye nepayipi lensimbi elihlanganisiwe
D -- ububanzi obujwayelekile bepayipi likakhonkolo
ф-- Ububanzi obujwayelekile bepayipi lensimbi elingenamthungo yi-ф 100:108 X 4
Umehluko phakathi kobubanzi bepayipi i-DE ne-DN
1. I-DN ibhekisela kububanzi obujwayelekile bepayipi, obungebona ububanzi bangaphandle noma ububanzi bangaphakathi (kufanele buhlobane namayunithi aseNgilandi esigabeni sokuqala sokuthuthukiswa kobunjiniyela bamapayipi, futhi ngokuvamile isetshenziselwa ukuchaza amapayipi ensimbi agqitshwe nge-galvanized). Ubuhlobo bayo obuhambisana namayunithi aseNgilandi bungokulandelayo:
4/8 intshi: DN15;
Amasentimitha angu-6/8: DN20;
Ipayipi elingu-1 intshi: 1 intshi: DN25;
Ipayipi lamasentimitha amabili: 1 kanye ne-1/4 intshi: DN32;
Ipayipi eliyisigamu sesentimitha: 1 kanye ne-1/2 intshi: DN40;
Ipayipi lamasentimitha amabili: amasentimitha amabili: DN50;
Ipayipi lamasentimitha amathathu: 3 intshi: DN80 (futhi imakwe njenge-DN75 ezindaweni eziningi);
Ipayipi lamasentimitha amane: 4 intshi: DN100;
2. I-De ibhekisela kakhulu kububanzi bangaphandle bepayipi (ngokuvamile obuphawulwa yi-De, okufanele buphawulwe ngesimo sobukhulu bodonga obungaphandle be-X)
Isetshenziswa kakhulu ukuchaza: amapayipi ensimbi angenamthungo, amapayipi e-PVC namanye epulasitiki, kanye namanye amapayipi adinga ukujiya kodonga okucacile.
Uma sithatha ipayipi lensimbi elihlanganisiwe elenziwe nge-galvanized njengesibonelo, izindlela zokumaka ze-DN kanye ne-De yilezi ezilandelayo:
I-DN20 De25X2.5mm
I-DN25 De32X3mm
DN32 De40X4mm
DN40 De50X4mm
Sijwayele ukusebenzisa i-DN ukumaka amapayipi ensimbi ahlanganisiwe, futhi asivamile ukusebenzisa i-De ukumaka amapayipi ngaphandle kokufaka ukujiya kodonga;
Kodwa ukumaka amapayipi epulasitiki kungenye indaba; Kuhlobene nemikhuba yemboni. Enqubweni yokwakha yangempela, amapayipi angu-20, 25, 32 kanye namanye esiwabiza ngokuthi amapayipi abhekisela ku-De, hhayi ku-DN.
Ngokusho kokuhlangenwe nakho okusebenzayo endaweni:
a. Izindlela zokuxhumanisa zezinto ezimbili zamapayipi azilutho ngaphandle kokuxhumanisa intambo yesikulufu kanye nokuxhumanisa i-flange.
b. Ipayipi lensimbi elihlanganisiwe kanye nepayipi le-PPR kungaxhunywa ngezindlela ezimbili ezingenhla, kodwa intambo yesikulufu ilula kakhulu kumapayipi amancane kuno-50, kanti i-flange ithembeke kakhulu kumapayipi amakhulu kuno-50.
c. Uma kuxhunywe amapayipi amabili ensimbi enziwe ngezinto ezahlukene, kuzocatshangelwa ukuthi kuzokwenzeka yini ukusabela kweseli le-galvanic, ngaphandle kwalokho izinga lokugqwala kwamapayipi ensimbi asebenzayo lizosheshiswa. Kungcono ukusebenzisa ama-flange ukuze kuxhunywe, bese usebenzisa izinto zokuvikela i-raber gasket ukuze uhlukanise izinsimbi ezimbili, kufaka phakathi amabhawodi, nama-gasket ukuze ugweme ukuthintana.
Umehluko phakathi kwe-DN, i-De kanye ne-Dg
Ububanzi obujwayelekile be-DN
Ububanzi bangaphandle
I-gong enobubanzi be-Dg. I-gong enobubanzi be-Dg yenziwe eShayina, inezici zaseShayina, kodwa ayisasetshenziswa.
a. Izindlela ezahlukene zokumaka amapayipi ahlukahlukene:
1. Kumapayipi ensimbi okudlulisa igesi yamanzi (afakwe i-galvanized noma angafakwanga i-galvanized), amapayipi ensimbi ahlanganisiwe kanye namanye amapayipi, ububanzi bepayipi kufanele buboniswe ngobubanzi obujwayelekile be-DN (njenge-DN15, DN50);
2. Ipayipi lensimbi elingenamthungo, ipayipi lensimbi elihlanganisiwe (umthungo oqondile noma umthungo ojikelezayo), ipayipi lethusi, ipayipi lensimbi engagqwali kanye namanye amapayipi, ububanzi bepayipi kufanele bube yi-D × Ubukhulu bodonga (njenge-D108 × 4、D159 × 4.5, njll.);
3. Kumapayipi ekhonkrithi aqinisiwe (noma ekhonkrithi), amapayipi obumba, amapayipi e-ceramic amelana ne-asidi, amapayipi e-liner kanye namanye amapayipi, ububanzi bepayipi kufanele buvezwe ububanzi bangaphakathi buka-d (njenge-d230, i-d380, njll.);
4. Kumapayipi epulasitiki, ububanzi bepayipi kufanele buvezwe ngokwezinga lomkhiqizo;
5. Uma i-DN yobubanzi obujwayelekile isetshenziswa ukumela ububanzi bepayipi ekwakhiweni, kufanele kube nethebula lokuqhathanisa phakathi kwe-DN yobubanzi obujwayelekile kanye nemininingwane yomkhiqizo ehambisanayo.
b. Ubudlelwano be-DN, De kanye ne-Dg:
I-De ububanzi bodonga lwangaphandle lwepayipi
I-DN i-De minus ingxenye yobukhulu bodonga lwepayipi
I-Dg ngokuvamile ayisetshenziswa
1 Ububanzi bepayipi kufanele bube ngama-mm.
2 Ukuvezwa kobubanzi bepayipi kufanele kuhambisane nezinhlinzeko ezilandelayo:
1 Kumapayipi ensimbi okudlulisa igesi yamanzi (afakwe i-galvanized noma angafakwanga i-galvanized), amapayipi ensimbi ahlanganisiwe kanye namanye amapayipi, ububanzi bepayipi kufanele buboniswe yi-DN yobubanzi obujwayelekile;
2 Ipayipi lensimbi elingenamthungo, ipayipi lensimbi elihlanganisiwe (umthungo oqondile noma umthungo ojikelezayo), ipayipi lethusi, ipayipi lensimbi engagqwali kanye namanye amapayipi, ububanzi bepayipi kufanele bube ububanzi bangaphandle × Ubukhulu bodonga;
3 Kumapayipi ekhonkrithi aqinisiwe (noma ekhonkrithi), amapayipi obumba, amapayipi e-ceramic amelana ne-asidi, amapayipi e-liner kanye namanye amapayipi, ububanzi bepayipi kufanele buboniswe ububanzi bangaphakathi d;
4 Kumapayipi epulasitiki, ububanzi bepayipi kufanele buvezwe ngokwezinga lomkhiqizo;
5 Uma i-DN yobubanzi obujwayelekile isetshenziswa ukumela ububanzi bepayipi ekwakhiweni, ithebula lokuqhathanisa phakathi kwe-DN yobubanzi obujwayelekile kanye nemininingwane yomkhiqizo ehambisanayo kufanele inikezwe.
Amapayipi e-polyvinyl chloride angafakwanga ipulasitiki okwakha amanzi okudonsa amanzi - de (ububanzi obujwayelekile bangaphandle) ukuze kuchazwe × E (ukujiya kodonga okujwayelekile) kusho (GB 5836.1-92).
Amapayipi e-polypropylene (PP) okuphakelwa kwamanzi × U-E umele (ububanzi obujwayelekile bangaphandle × Ubukhulu bodonga)
Ukumaka amapayipi epulasitiki emidwebweni yobunjiniyela
Usayizi wobukhulu be-metric
Kumelwe yi-DN
Ngokuvamile okubizwa ngokuthi "usayizi ojwayelekile", akusiwo ububanzi bangaphandle bepayipi noma ububanzi bangaphakathi bepayipi. Kuyisilinganiso sobubanzi bangaphandle nobubanzi bangaphakathi, okubizwa ngokuthi ububanzi bangaphakathi obujwayelekile.
Isibonelo, uphawu lwe-metric (usayizi wobukhulu be-mm) lwepayipi lepulasitiki elinobubanzi bangaphandle obungu-63mm DN50
Usayizi wobukhulu be-ISO
Thatha i-Da njengobubanzi bangaphandle bepayipi le-PVC kanye nepayipi le-ABS
Thatha i-De njengobubanzi bangaphandle bepayipi le-PP kanye nepayipi le-PE
Isibonelo, uphawu lwe-metric lwepayipi lepulasitiki olunobubanzi obungaphandle obungu-63mm (usayizi wobukhulu be-mm)
I-Da63 yepayipi le-PVC kanye nepayipi le-ABS
Isikhathi sokuthunyelwe: Novemba-07-2022
