Idayamitha ye-Nominal kunye ne-diameter yangaphakathi nangaphandle ye-spiral steel pipe

Umbhobho wentsimbi ye-Spiralluhlobo lombhobho wentsimbi owenziwe ngokuqengqeleka umcu wentsimbi ube kwimilo yombhobho kwi-engile ethile ejiyileyo (i-engile yokuyila) kwaye emva koko uyiwelde. Isetyenziswa ngokubanzi kwiinkqubo zemibhobho yeoli, igesi yendalo kunye nokuhanjiswa kwamanzi.

Idayamitha ye-Nominal yi-diameter yegama lombhobho, ixabiso eliqhelekileyo lobungakanani bombhobho. Ngombhobho wentsimbi ejikelezayo, i-diameter ye-nominal idla ngokusondela, kodwa ayilingani, eyona-diameter yangaphakathi okanye yangaphandle.

Ngokuqhelekileyo ibonakaliswa yi-DN kunye nenani, njenge-DN200, ebonisa umbhobho wensimbi kunye nobubanzi obuyi-200 mm.

Uluhlu lwedayamitha eqhelekileyo (DN):
1. Uluhlu lwedamitha encinci (DN100 - DN300):
DN100 (4 intshi)
DN150 (6 intshi)
DN200 (8 intshi)
DN250 (10 intshi)
DN300 (12 intshi)

2. Uluhlu lwedayamitha ephakathi (DN350 - DN700):
DN350 (14 intshi)
DN400 (16 intshi)
DN450 (18 intshi)
DN500 (20 intshi)
DN600 (24 intshi)
DN700 (28 intshi)

3. Uluhlu lweDiameter enkulu (DN750 - DN1200)
DN750 (30 intshi)
DN800 (32 intshi)
DN900 (36 intshi)
DN1000 (40 intshi)
DN1100 (44 intshi)
DN1200 (48 intshi)

4. Uluhlu lwedayamitha enkulu ngakumbi (DN1300 nangaphezulu)
DN1300 (52 intshi)
DN1400 (56 intshi)
DN1500 (60 intshi)
DN1600 (64 intshi)
DN1800 (72 intshi)
DN2000 (80 intshi)
DN2200 (88 intshi)
DN2400 (96 intshi)
DN2600 (104 intshi)
DN2800 (112 intshi)
DN3000 (120 intshi)

Idayamitha yangaphandle (OD): I-OD yidayamitha yendawo yangaphandle yombhobho wentsimbi ejiyileyo. I-OD yombhobho wensimbi ojikelezayo ubukhulu bangempela bomphandle wombhobho. I-OD inokufumaneka ngomlinganiselo wangempela, ngokuqhelekileyo kwiimilimitha (mm).
I-Diameter yangaphakathi (ID): I-ID yi-diameter yendawo yangaphakathi yombhobho wensimbi ojikelezayo. I-ID yobukhulu bokwenene bengaphakathi lombhobho. I-ID idla ngokubalwa ngokukhupha kabini ubukhulu bodonga ukusuka kwi-OD kwiimilimitha (mm) ID = OD-2 x Ukutyeba kweendonga.

Indawo yosetyenziso

Imibhobho yentsimbi ene-Spiral ene-diameter eyohlukeneyo ineendlela ezahlukeneyo zokusebenzisa kwiindawo ezahlukeneyo:
1. i-diameter encinciUmbhobho weNtsimbi weSasa(DN100 - DN300): esetyenziswa ngokuqhelekileyo kubunjineli bakamasipala kwimibhobho yokubonelela ngamanzi, imibhobho yokuhambisa amanzi, imibhobho yegesi, njl.
2. i-diameter ephakathiUmbhobho weShaw(DN350 - DN700): isetyenziswa ngokubanzi kwi-oyile, umbhobho wegesi yendalo kunye nombhobho wamanzi woshishino. 3. umbhobho omkhulu wensimbi ojikelezayo (DN100 - DN300): osetyenziswa ngokuqhelekileyo kumbhobho wonikezelo lwamanzi lobunjineli bakamasipala, umbhobho wokuhambisa amanzi, umbhobho wegesi, njl.
3.Umbhobho weSasaw oMkhulu weDiameter(DN750 - DN1200): isetyenziswe kwiiprojekthi zokuhambisa amanzi kumgama omde, iipayipi zeoli, iiprojekthi ezinkulu zoshishino, ezifana nokuthutha okuphakathi.
4. Idayimitha enkulu kakhuluUmbhobho weNsimbi yeKhabhoni(i-DN1300 nangaphezulu): isetyenziselwa ubukhulu becala kwiiprojekthi zemibhobho ye-oyile nerhasi yomgama omde wengingqi, i-oyile nerhasi, imibhobho engaphantsi kwamanzi kunye nezinye iiprojekthi zeziseko ezingundoqo.

Ububanzi obuqhelekileyo kunye nezinye iinkcukacha zombhobho wensimbi ojikelezayo zihlala ziveliswa ngokuhambelana nemigangatho efanelekileyo kunye neenkcukacha:
1. imigangatho yamazwe ngamazwe: I-API 5L: esebenzayo kumbhobho wentsimbi yokuthutha umbhobho, ichaza ubungakanani kunye neemfuno zezinto eziphathekayo zombhobho wensimbi ojikelezayo i-ASTM A252: esebenzayo kumbhobho wensimbi yesakhiwo, ichaza ubungakanani kunye neemfuno zokuvelisa umbhobho wensimbi ojikelezayo.
2. umgangatho wesizwe: I-GB / T 9711: esebenzayo kwipayipi yensimbi yokuthutha i-oyile kunye negesi yegesi, ichaza iimfuno zobugcisa bombhobho wensimbi ojikelezayo. I-gb/t 3091: esebenzayo kumbhobho wentsimbi odityanisiweyo wokuthuthwa kwamanzi oxinzelelo oluphantsi, ichaza imilinganiselo kunye neemfuno zobugcisa zombhobho wensimbi ojikelezayo.