30CrMo gami karfe bututu yana da carbon abun ciki na 0.26 ~ 0.34, silicon abun ciki na 0.17 ~ 0.37, manganese abun ciki na 0.40 ~ 0.70, molybdenum abun ciki na 0.15 ~ 0.25, chromium abun ciki na 0.80 ~ 1.10.
Matsayin zartarwa na matsakaici da ƙananan bututun tukunyar jirgi: GB3087-1999 bututun ƙarfe mara ƙarfi don ƙananan tukunyar jirgi da matsakaici.
High zafin jiki prefabricated kai tsaye binne rufi bututu ne wani irin kai tsaye binne prefabricated rufi bututu tare da mai kyau rufi yi, aminci da aminci da kuma low aikin kudin.
Bututun ƙarfe yana da sashin rami kuma tsayinsa ya fi girma fiye da diamita ko kewayen ƙarfe. Dangane da siffar sashe, an raba shi zuwa madauwari, murabba'i, rectangular da bututun ƙarfe na musamman; Bisa ga kayan, an raba shi zuwa carbon tsarin karfe bututu, low gami tsarin karfe bututu, gami karfe bututu da hada karfe bututu.
Bakin karfe murabba'in bututu nau'in karfe ne mai tsayi. Domin sashin yana da murabba'i, ana kiran shi square tube. Ana amfani da bututu mai yawa don jigilar ruwa, kamar mai, iskar gas, ruwa, gas, tururi, da sauransu.
A cikin jerin bututun ƙarfe mara nauyi, akwai wani abu mai suna Q345B bututun ƙarfe mara nauyi, wanda ke cikin jerin ƙananan gami. Daga cikin ƙananan kayan haɗin gwal, wannan abu shine mafi na kowa. Q345B m karfe bututu amfani da ake kira 16Mn m karfe bututu.
Manyan kasashen da ke shigo da bututun tukunyar jirgi su ne Japan da Jamus. Ƙayyadaddun samfuran da ake shigo da su akai-akai sune 15914.2mm; 2734.0mm; 219.110.0mm; 41975 mm; 406.460mm, da dai sauransu The m takamaiman ne 31.84.5mm, da kuma tsawon ne kullum 5 ~ 8m.
Mahimmancin zafin jiki mai zafi na madaidaicin bututu mai haske gabaɗaya ana ɗaukar shi azaman sakamakon rarrabuwar abubuwa masu ƙazanta kamar su phosphorus, tin, antimony da arsenic a ainihin iyakar hatsin austenite, wanda ke haifar da ƙwanƙwasa iyakar hatsi.
16Mn ƙananan ƙarfe ne mai ƙarfi mai ƙarfi mai ƙarfi: abun ciki na carbon shine 0.1% - 0.25%, kuma ana ƙara manyan abubuwan gami da manganese, silicon, vanadium, niobium da titanium; Jimlar abun ciki na gami bai wuce 3% ba.
(1) High quality carbon tsarin karfe maki hada da 20g, 20mng da 25mng.
(2) Alloy tsarin karfe maki: 15mog, 20mog, 12crmog, 15CrMoG, 12CR2MOG, 12crmovg, 12Cr3MoVSiTiB, da dai sauransu
Inner epoxy m polyethylene anticorrosive karfe bututu ne sabon irin karfe roba hada bututu. An hada da karfe bututu substrate, epoxy guduro ciki shafi da polyethylene m shafi.
Bututun ƙarfe maras sumul dogon tsiri ne na ƙarfe tare da sashe mara ƙarfi kuma babu haɗin gwiwa a kusa da shi. Bututun ƙarfe maras sumul yana da ɓangaren rami kuma ana iya amfani dashi azaman bututun isar da ruwa, kamar bututun isar da mai, iskar gas, iskar gas, ruwa da wasu ƙaƙƙarfan kayan aiki. Idan aka kwatanta da ƙaƙƙarfan ƙarfe kamar zagaye na ƙarfe, bututun ƙarfe maras sumul yana da ƙarfi iri ɗaya da juzu'i da nauyi mai sauƙi. Sashin tattalin arziki ne karfe.