Daidaita bayanin girman bututun ƙarfe yana buƙatar haɗawa da wasu mahimman sigogi:
Diamita na Waje (OD)
Diamita na waje na bututun ƙarfe, yawanci ana bayyana shi azaman diamita mara suna (DN) ko girman bututu mara suna (NPS).
Girman Bututu Mai Lamba (NPS) idan aka kwatanta da Diamita Mai Lamba (DN)
NPS shine girman da aka ƙayyade bisa inci, yayin da DN shine diamita na asali a cikin millimeters. Dangantakar juyawa abu ne mai sauƙi: ƙimar DN daidai take da ƙimar NPS da aka ninka da 25.4 (mm/inch) don zagaye sakamakon.
A aikace, daidaito tsakanin ƙa'idodin NPS da DN ya dogara ne akan teburin girma da aka tsara waɗanda aka kafa.
Kauri a Bango (WT)
Kauri na bangon bututu. Ga bututun da aka daidaita, kauri na bango galibi ana danganta shi da Jadawalin bututun, misali Jadawalin 40 ko Jadawalin 80, inda manyan ƙima ke nuna kauri bango.
Tsawon
Tsawon bututun ƙarfe, wanda za a iya gyarawa ko kuma a yi shi bazuwar, ya danganta da buƙatun samarwa da aikace-aikacensa. Tsawon da aka saba da shi shine mita 6 da mita 12.
Kayan Aiki
Ma'aunin kayan aiki da maki na bututun ƙarfe, kamar ASTM A106 Grade B, API 5L Grade B, da sauransu. Waɗannan ƙa'idodi suna ƙayyade abubuwan da ke cikin sinadarai da halayen jiki na bututun.
Ma'auni
Ma'aunin girma na bututun carbon da bakin karfe galibi yana bin ASME B36.10M (ƙarfe na carbon da ƙarfe mai ƙarfe) da B36.19M (bututun ƙarfe mai ƙarfe).
Teburan Girman Bututu da Teburan Nauyi (WGT)
samar da wata hanya ta daidaito don bayyana kauri bangon bututu a ƙarƙashin Jadawali daban-daban, da kuma rarraba ma'aunin nauyi kamar STD, XS, XXS, da sauransu.
Kauri na bango na bututu yana shafar girman ciki da nauyin bututun kai tsaye. Kauri na bango yana da mahimmanci domin yana ƙayyade adadin matsin lamba na ciki da bututun zai iya jurewa.
Lambar jadawalin
Hanya ta nuna kauri na bango na bututu, kamar Jadawali na 40 da 80, tana nufin kauri na bango na bututun daidaitacce da ƙarfafawa don diamita na waje da aka bayar.
Kimanin lissafin lambar jadawalin kamar haka:
Saboda iyawarsu ta jure matsin lamba na yau da kullun, ana buƙatar bututun ƙarfe na Jadawali na 40 da Jadawali na 80 a fannoni daban-daban. Tunda an tsara waɗannan bututun ne don jure matsin lamba mai yawa, sau da yawa ana buƙatar su da yawa don biyan buƙatun masana'antu daban-daban.
| NPS | DIAMITI NA WAJE (IN) | DIAMITI NA CIKI (IN) | KAURIN BANGO (CI) | Nauyi (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 | DIAMITI NA WAJE (IN) | DIAMITI NA CIKI (IN) | KAURIN BANGO (CI) | Nauyi (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 inci 6, Jadawali 40, ASTM A106 Grade B, Tsawon mita 6". Wannan yana wakiltar bututun ƙarfe mai diamita na inci 6, Jadawali 40, an ƙera shi bisa ga ƙa'idodin ASTM A106 Grade B, kuma tsawonsa ya kai mita 6.
Lokacin Saƙo: Fabrairu-28-2024