Ukuchaza kahle usayizi wepayipi lensimbi kudinga ukufaka amapharamitha amaningana abalulekile:
Ububanzi Bangaphandle (OD)
Ububanzi bangaphandle bepayipi lensimbi, ngokuvamile buvezwa njengobubanzi obujwayelekile (i-DN) noma usayizi wepayipi ojwayelekile (i-NPS).
Usayizi Wepayipi Elingaguquki (i-NPS) vs. Ububanzi Obungaguquki (i-DN)
I-NPS usayizi ojwayelekile osekelwe kuma-intshi, kuyilapho i-DN iwububanzi obujwayelekile ngamamilimitha. Ubudlelwano bokuguqulwa bulula kakhulu: inani le-DN lilingana nenani le-NPS eliphindwe ngo-25.4 (mm/intshi) ukuze kufinyelelwe umphumela.
Empeleni, ukuxhumana phakathi kwezindinganiso ze-NPS ne-DN kusekelwe kakhulu kumathebula obukhulu ajwayelekile asemisiwe.
Ubukhulu Bodonga (WT)
Ubukhulu bodonga lwepayipi. Kupayipi elijwayelekile, ubukhulu bodonga buvame ukuhlotshaniswa noHlelo lwepayipi, isib. Uhlelo 40 noma Uhlelo 80, lapho amanani amakhulu abonisa udonga olujiyile.
Ubude
Ubude bepayipi lensimbi, elingalungiswa noma elingahleliwe, kuye ngezidingo zokukhiqiza kanye nokusetshenziswa. Ubude obuvamile bungamamitha ayi-6 namamitha ayi-12.
Izinto
Izindinganiso zezinto kanye namazinga epayipi lensimbi, njenge-ASTM A106 Ibanga B, i-API 5L Ibanga B, njll. Lezi zindinganiso zichaza ukwakheka kwamakhemikhali kanye nezakhiwo zomzimba zepayipi.
Amazinga
Izindinganiso zobukhulu bepayipi lekhabhoni nensimbi engagqwali zilandela kakhulu i-ASME B36.10M (insimbi yekhabhoni ne-alloy) kanye ne-B36.19M (ipayipi lensimbi engagqwali).
Amathebula Osayizi Wepayipi kanye Namathebula Ebanga Lesisindo (i-WGT)
hlinzeka ngendlela ejwayelekile yokuchaza ubukhulu bodonga lwamapayipi ngaphansi kwamaShejuli ahlukene, kanye nokuhlukaniswa kwamazinga esisindo njenge-STD, XS, XXS, nabanye.
Ubukhulu bodonga lwepayipi buthinta ngqo ubukhulu bangaphakathi kanye nesisindo sepayipi. Ubukhulu bodonga bubalulekile ngoba bunquma inani lengcindezi yangaphakathi ipayipi elingayimelana nayo.
Inombolo yeshejuli
Indlela yokubonisa ubukhulu bodonga lwepayipi, ngokuvamile njengeShejuli 40 no-80, ibhekisela ebukhulwini bodonga obujwayelekile nobuqinisiwe bepayipi yobubanzi obunikeziwe bangaphandle.
Ukubalwa okulinganiselwe kwenombolo yeshejuli kungokulandelayo:
Ngenxa yekhono lawo lokubekezelela ukucindezeleka okuvamile, amapayipi ensimbi e-Schedule 40 kanye ne-Schedule 80 avame ukudingeka ezimbonini ezahlukahlukene. Njengoba la mapayipi eklanyelwe ukumelana nokucindezeleka okuphezulu, avame ukudingeka ngobuningi ukuze ahlangabezane nezidingo zezimboni ezahlukene.
| I-NPS | Ububanzi obungaphandle (ngaphakathi) | Ububanzi obungaphakathi (ngaphakathi) | UKUQINA KODONGA (NGAPHAKATHI) | ISISINDO (LB/FT) |
| 1/8 | 0.405" | 0.269" | 0.068" | 0.24 lb/ft |
| 1/4 | 0.540" | 0.364" | 0.088" | 0.42 lb/ft |
| 3/8 | 0.675" | 0.493" | 0.091" | 0.57 lb/ft |
| 1/2 | 0.840" | 0.622" | 0.109" | 0.85 lb/ft |
| 3/4 | 1.050" | 0.824" | 0.113" | 1.13 lb/ft |
| 1 | 1.315" | 1.049" | 0.133" | 1.68 lb/ft |
| 1 1/4 | 1.660" | 1.380" | 0.140" | 2.27 lb/ft |
| 1 1/2 | 1.900" | 1.610" | 0.145" | 2.72 lb/ft |
| 2 | 2.375" | 2.067" | 0.154" | 3.65 lb/ft |
| 2 1/2 | 2.875" | 2.469" | 0.203" | 5.79 lb/ft |
| 3 | 3.500" | 3.068" | 0.216" | 7.58 lb/ft |
| 3 1/2 | 4.000" | 3.548" | 0.226" | 9.11 lb/ft |
| 4 | 4.500" | 4.026" | 0.237" | 10.79 lb/ft |
| 5 | 5.563" | 5.047" | 0.258" | 14.62 lb/ft |
| 6 | 6.625" | 6.065" | 0.280" | 18.97 lb/ft |
| 8 | 8.625" | 7.981" | 0.322" | 28.55 lb/ft |
| 10 | 10.750" | 10.020" | 0.365" | 40.48 lb/ft |
| 12 | 12.75" | 11.938" | 0.406" | 53.52 lb/ft |
| 14 | 14.000" | 13.124" | 0.438" | 63.50 lb/ft |
| 16 | 16.000" | 15.000" | 0.500" | 82.77 lb/ft |
| 18 | 18.000" | 16.876" | 0.562" | 104.70 lb/ft |
| 20 | 20.000" | 18.812" | 0.594" | 123.10 lb/ft |
| 24 | 24.000" | 22.624" | 0.688" | 171.30 lb/ft |
| I-NPS | Ububanzi obungaphandle (ngaphakathi) | Ububanzi obungaphakathi (ngaphakathi) | UKUQINA KODONGA (NGAPHAKATHI) | ISISINDO (LB/FT) |
| 1/8 | 0.405" | 0.215" | 0.095" | 0.32 lb/ft |
| 1/4 | 0.540" | 0.302" | 0.119" | 0.54 lb/ft |
| 3/8 | 0.675" | 0.423" | 0.126" | 0.74 lb/ft |
| 1/2 | 0.840" | 0.546" | 0.147" | 1.09 lb/ft |
| 3/4 | 1.050" | 0.742" | 0.154" | 1.47 lb/ft |
| 1 | 1.315" | 0.957" | 0.179" | 2.17 lb/ft |
| 1 1/4 | 1.660" | 1.278" | 0.191" | 3.00 lb/ft |
| 1 1/2 | 1.900" | 1.500" | 0.200" | 3.63 lb/ft |
| 2 | 2.375" | 1.939" | 0.218" | 5.02 lb/ft |
| 2 1/2 | 2.875" | 2.323" | 0.276" | 7.66 lb/ft |
| 3 | 3.500" | 2.900" | 0.300" | 10.25 lb/ft |
| 3 1/2 | 4.000" | 3.364" | 0.318" | 12.50 lb/ft |
| 4 | 4.500" | 3.826" | 0.337" | 14.98 lb/ft |
| 5 | 5.563" | 4.813" | 0.375" | 20.78 lb/ft |
| 6 | 6.625" | 5.761" | 0.432" | 28.57 lb/ft |
| 8 | 8.625" | 7.625" | 0.500" | 43.39 lb/ft |
| 10 | 10.750" | 9.562" | 0.594" | 64.42 lb/ft |
| 12 | 12.75" | 11.374" | 0.688" | 88.63 lb/ft |
| 14 | 14.000" | 12.500" | 0.750" | 106.10 lb/ft |
| 16 | 16.000" | 14.312" | 0.844" | 136.58 lb/ft |
| 18 | 18.000" | 16.124" | 0.938" | 170.87 lb/ft |
| 20 | 20.000" | 17.938" | 1.031" | 208.92 lb/ft |
| 24 | 24.000" | 21.562" | 1.219" | 296.58 lb/ft |
Ngakho-ke, isibonelo esiphelele sencazelo yobukhulu bepayipi lensimbi singaba "i-NPS 6 intshi, iShejuli 40, i-ASTM A106 Ibanga B, Ubude 6 amamitha". Lokhu kumele ipayipi lensimbi elinobubanzi obujwayelekile obungamasentimitha angu-6, iShejuli 40, ekhiqizwe ngokwezindinganiso ze-ASTM A106 Grade B, kanye nobude obungamamitha ayi-6.
Isikhathi sokuthunyelwe: Feb-28-2024