Si sax ah u qeexaya cabbirka tuubada birta waxay u baahan tahay inay ku jirto dhowr cabbir oo muhiim ah:
Dhexroor ka baxsan (OD)
Dhexroorka dibadda ee tuubada birta, sida caadiga ah waxaa lagu muujiyaa dhexroor magaceed (DN) ama cabbirka tuubada magacaaban (NPS).
Cabbirka Dhuumaha Magaca (NPS) vs. Dhexroor Magaca Magacaaban (DN)
NPS waa cabbirka magaca ee ku salaysan inches, halka DN uu yahay dhexroorka magaca millimitirka.Xidhiidhka beddelashadu waa mid fudud: qiimaha DN wuxuu la mid yahay qiimaha NPS oo lagu dhufto 25.4 (mm/inch) si loo soo koobo natiijada.
Ficil ahaan, waraaqaha u dhexeeya heerarka NPS iyo DN waxay ku salaysan yihiin in ka badan miisaska cabbirka la habeeyey ee la dhisay.
Dhumucda gidaarka (WT)
Dhumucda gidaarka tuubada.Tuubooyinka heerka caadiga ah, dhumucdiisuna waxay inta badan la xiriirtaa Jadwalka tuubada, tusaale ahaan Jadwalka 40 ama Jadwalka 80, halkaas oo qiyamka waaweyni muujinayaan darbiyada dhumuc weyn.
Dhererka
Dhererka tuubada birta, taas oo noqon karta mid go'an ama random, taas oo ku xidhan shuruudaha wax soo saarka iyo codsiga.Dhererka guud waa 6 mitir iyo 12 mitir.
Qalab
Heerarka walxaha iyo darajooyinka tuubada birta, sida ASTM A106 Fasalka B, API 5L Fasalka B, iwm. Heerarkani waxay qeexayaan isku dhafka kiimikada iyo sifooyinka jireed ee tuubada.
Heerarka
Heerarka cabbirka ee tubada kaarboonka iyo birta aan-dhalatada badiyaa waxay raacaan ASME B36.10M (kaarboon iyo birta daawaha) iyo B36.19m
Miisaska Cabbirka Beebka iyo Miisaska Darajada Miisaanka (WGT)
in la bixiyo hab habaysan oo lagu qeexo dhumucda gidaarka tuubada ee hoos timaada Jadwalka kala duwan, iyo sidoo kale kala soocida darajooyinka miisaanka sida STD, XS, XXS, iyo kuwa kale.
Dhumucda gidaarka ee tuubada waxay si toos ah u saamaysaa cabbirka gudaha iyo miisaanka tuubada.Dhumucda gidaarka ayaa muhiim ah sababtoo ah waxay go'aaminaysaa cadadka cadaadiska gudaha ee tuubada u adkeysan karto.
Lambarka jadwalka
Habka lagu tilmaamo dhumucda gidaarka ee tuubada, sida caadiga ah sida Jadwalka 40 iyo 80, waxa loola jeedaa heerka iyo dhumucda gidaarka la xoojiyay ee tuubada ee dhexroor ka baxsan.
Qiyaasta xisaabinta nambarka jadwalku waa sida soo socota:
Sababtoo ah awooddooda u adkeysiga cadaadiska caadiga ah, Jadwalka 40 iyo Jadwalka 80 ee tuubooyinka birta ayaa caadi ahaan looga baahan yahay warshado kala duwan.Maadaama tuubooyinkan loogu talagalay inay u adkeystaan cadaadiska sare, badanaa waxaa looga baahan yahay tiro badan si ay u daboolaan baahida warshadaha kala duwan.
| NPS | Dhexroor ka baxsan ( gudaha) | GUDAHA DHEXE (IN) | Dhumucnaanta gidaarka | Miisaanka (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 |
| NPS | Dhexroor ka baxsan ( gudaha) | GUDAHA DHEXE (IN) | Dhumucnaanta gidaarka | Miisaanka (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 |
Sidaa darteed, tusaale dhammaystiran oo ah sharraxaadda cabbirka birta waxay noqon kartaa "NPS 6 inch, Schedule 40, ASTM A106 Grade B, Length 6 mitir".Tani waxay ka dhigan tahay tuubo bir ah oo leh dhexroor magaceedu yahay 6 inji, Jadwalka 40, oo loo soo saaray ASTM A106 heerarka darajada B, iyo dhererka 6 mitir.
Waqtiga boostada: Febraayo-28-2024