Daidaitaccen bayanin girman bututun ƙarfe yana buƙatar haɗa maɓalli da yawa:
Wajen Diamita (OD)
Diamita na waje na bututun ƙarfe, yawanci ana bayyana shi azaman diamita mara kyau (DN) ko girman bututu mara kyau (NPS).
Girman Bututu mara izini (NPS) vs. Diamita mara kyau (DN)
NPS shine girman ƙididdiga bisa inci, yayin da DN shine diamita maras tushe a millimeters.Dangantakar juzu'i tana da sauƙi: ƙimar DN daidai yake da ƙimar NPS wanda aka ninka ta 25.4 (mm/inch) don zagaye sakamakon.
A aikace, wasiƙun da ke tsakanin ma'aunin NPS da DN sun dogara ne akan ƙayyadaddun teburi waɗanda aka kafa.
Kaurin bango (WT)
Kaurin bangon bututu.Don daidaitaccen bututu, kaurin bango galibi ana haɗa shi da Jadawalin bututu, misali Jadawalin 40 ko Jadawalin 80, inda manyan ƙima suna nuna bango mai kauri.
Tsawon
Tsawon bututun ƙarfe, wanda za'a iya gyarawa ko bazuwar, dangane da samarwa da buƙatun aikace-aikacen.Tsawon gama gari shine mita 6 da mita 12.
Kayan abu
Matsayin kayan aiki da maki don bututun ƙarfe, kamar ASTM A106 Grade B, API 5L Grade B, da sauransu. Waɗannan ƙa'idodin sun ƙayyade abubuwan sinadaran da kaddarorin jiki na bututu.
Matsayi
Ma'aunin ma'aunin carbon da bututun bakin karfe galibi suna bin ASME B36.10M (carbon da gami karfe) da B36.19M (bututun bakin karfe).
Teburin Girman Bututu da Teburan Girman Nauyi (WGT)
samar da daidaitattun hanyar da za a iya kwatanta kaurin bangon bututu a ƙarƙashin Jadawali daban-daban, da kuma rarraba ma'auni kamar STD, XS, XXS, da sauransu.
Kaurin bango na bututu kai tsaye yana rinjayar girman ciki da nauyin bututun.Kaurin bango yana da mahimmanci saboda yana ƙayyade yawan matsa lamba na ciki da bututun zai iya jurewa.
Lambar jadawalin
Hanyar nuna kaurin bangon bututu, yawanci kamar Jadawalin 40 da 80, yana nufin daidaitattun kauri da kauri na bangon bututu don wani diamita na waje.
Matsakaicin lissafin adadin jadawalin shine kamar haka:
Saboda iyawarsu ta jure matsi na yau da kullun, Jadawalin 40 da Jadawalin 80 na bututun ƙarfe ana buƙatar su a masana'antu daban-daban.Tun da an tsara waɗannan bututun don tsayayya da matsanancin matsin lamba, sau da yawa ana buƙatar su da yawa don biyan bukatun masana'antu daban-daban.
| NPS | WAJEN DIAMETER (IN) | CIKI DIAMETER (IN) | KASAR BANGO (CIN) | NUNA (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 | WAJEN DIAMETER (IN) | CIKI DIAMETER (IN) | KASAR BANGO (CIN) | NUNA (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 |
Saboda haka, cikakken misali na bayanin girman bututun ƙarfe na iya zama "NPS 6 inch, Jadawalin 40, ASTM A106 Grade B, Tsawon mita 6".Wannan yana wakiltar bututun ƙarfe tare da diamita mara kyau na inci 6, Jadawalin 40, ƙera zuwa matsayin ASTM A106 Grade B, da tsayin mita 6.
Lokacin aikawa: Fabrairu-28-2024