Girman bututun ƙarfe

Bututun ƙarfean rarraba su ta hanyar siffa ta giciye zuwa madauwari, murabba'i, rectangular, da bututu masu siffa ta musamman; ta abu a cikin carbon tsarin karfe bututu, low-alloy tsarin karfe bututu, gami karfe bututu, da hadawa bututu; kuma ta hanyar aikace-aikacen cikin bututu don isar da bututun, tsarin injiniya, kayan aikin zafi, masana'antar petrochemical, masana'antar injina, hakowar ƙasa, da kayan aiki mai ƙarfi. Ta hanyar samarwa, an raba su zuwa bututun ƙarfe marasa ƙarfi da bututun ƙarfe na welded. An kuma karkasa bututun ƙarfe maras sumul zuwa nau'ikan bututu masu zafi da na sanyi (jawo), yayin da aka raba bututun ƙarfe na welded zuwa bututu masu walƙiya madaidaiciya da bututu mai karkace.

 

Akwai hanyoyi da yawa don wakiltar sigogin bututu. A ƙasa akwai bayani don girman bututun da aka saba amfani da su: NPS, DN, OD da Jadawalin.

(1) NPS (Girman Bututu maras kyau)

NPS shine ma'auni na Arewacin Amurka don high / low-matsi da high / low-zazzabi bututu. Lambar mara girma ce da ake amfani da ita don nuna girman bututu. Lambar da ke biye da NPS tana nuna daidaitaccen girman bututu.

NPS ya dogara ne akan tsarin IPS na baya (Iron Pipe Size). An kafa tsarin IPS don bambanta girman bututu, tare da girman da aka bayyana a cikin inci masu wakiltar kusan diamita na ciki. Misali, bututun IPS 6” yana nuna diamita na ciki kusa da inci 6. Masu amfani sun fara magana akan bututu kamar bututu 2-inch, 4-inch, ko 6-inch.

 

(2) Diamita Mai Suna DN

Diamita Na Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙaƙwalwar Ƙaƙwalwar Ƙaƙwalwar Ƙaƙwalwar Ƙaƙwalwar Ƙaƙwalwar Ƙaƙwalwar Ƙaƙwalwar Ƙaƙwalwar Ƙaƙwalwar Ƙaƙwalwar Ƙaƙwalwar Ƙaƙwalwar Ƙaƙwalwa An yi amfani da shi a tsarin bututu azaman mai gano haɗe-haɗe na lamba, wanda ya ƙunshi haruffa DN wanda ke biye da madaidaicin lamba. Ya kamata a lura cewa ƙaramar ƙima ta DN ita ce madaidaiciyar maƙalar lamba don dalilai na tunani, mai ɗauke da sako-sako da alaƙa kawai zuwa ainihin ma'aunin masana'anta. Lambar da ke biye da DN yawanci tana girma a cikin millimeters (mm). A cikin ma'auni na kasar Sin, yawancin diamita na bututu ana nuna su kamar DNXX, kamar DN50.

Diamita na bututu sun ƙunshi diamita na waje (OD), diamita na ciki (ID), da diamita mara kyau (DN/NPS). Diamita na ƙididdiga (DN/NPS) bai dace da ainihin diamita na waje ko ciki na bututu ba. A lokacin masana'antu da shigarwa, dole ne a ƙayyade madaidaicin diamita na waje da kauri na bango bisa ga ƙayyadaddun ƙayyadaddun bayanai don ƙididdige diamita na ciki na bututu.

 

(3) Diamita na waje (OD)

Diamita na waje (OD): Alamar diamita ta waje ita ce Φ, kuma ana iya bayyana ta da OD. A duk duniya, ana rarraba bututun ƙarfe da ake amfani da su don jigilar ruwa zuwa jerin diamita na waje guda biyu: Series A (mafi girma diamita na waje, daular) da kuma Series B (ƙananan diamita na waje, awo).

Da yawa karfe bututu m diamita jerin wanzu a duniya, kamar ISO (International Organization for Standardization), JIS (Japan), DIN (Jamus), da kuma BS (UK).

 

(4) Jadawalin Kaurin bangon Bututu

A cikin Maris 1927, Kwamitin Matsayi na Amurka ya gudanar da binciken masana'antu kuma ya gabatar da ƙananan haɓaka tsakanin matakan kaurin bangon bututu guda biyu. Wannan tsarin yana amfani da SCH don nuna kauri na bututu.

 

 EHONG STEEL - Girman bututun ƙarfe