Bututun Karfe Masu Walƙiya ASTM A252 Grade 1 2 3
Kadarar Inji
| Aji na 1 | Aji na 2 | Aji na 3 | |
| Ƙarfin samarwa ko ƙarfin samarwa, min, Mpa (PSI) | 205(30,000) | 240(35,000) | 310(45,000) |
| Ƙarfin tensile, min, Mpa (PSI) | 345(50,000) | 415(60,000) | 455(660000) |
Binciken samfur
Karfe bai kamata ya ƙunshi fiye da 0.050% phosphorus ba.
Bambancin da Aka Yarda a Nauyi da Girma
Kowace tsawon bututun za a auna ta daban kuma nauyinta ba zai bambanta fiye da kashi 15% sama da ko kashi 5% ƙarƙashin nauyinta na ka'ida ba, ana ƙididdige ta ta amfani da tsawonta da nauyinta a kowane tsawon naúrar.
Diamita na waje ba zai bambanta fiye da ±1% daga diamita na waje da aka ƙayyade ba
Kauri a bango a kowane lokaci bai kamata ya wuce kashi 12.5% ba a ƙarƙashin kauri na bango da aka ƙayyade
Tsawon
Tsawon bazuwar guda ɗaya: ƙafa 16 zuwa 25 (mita 4.88 zuwa 7.62)
Tsawon bazuwar sau biyu: sama da ƙafa 25 zuwa ƙafa 35 (7.62 zuwa 10.67m)
Tsawon iri ɗaya: bambancin da aka yarda da shi ±1in
Ƙarshe
Za a yi wa tukwanen bututu ado da ƙananan ƙarewa, sannan a cire ramukan da ke ƙarshensu
Idan ƙarshen bututun ya zama ƙarshen bevel, kusurwar za ta kasance digiri 30 zuwa 35
Alamar samfur
Kowace tsawon bututun za a yi masa alama ta hanyar amfani da stencil, stamping, ko birgima don nuna: sunan ko alamar masana'anta, lambar zafi, tsarin masana'anta, nau'in dinkin helical, diamita na waje, kauri na bango na musamman, tsayi, da nauyi a kowane tsawon raka'a, ƙirar takamaiman tsari da kuma matakin.










