ASTM A192 (ASME SA192) bututun ƙarfe bututun ƙarfe ne maras kyau da ake amfani da shi a cikin yanayin zafi da matsananciyar yanayi kuma ana amfani dashi sosai a cikin tukunyar jirgi da masu musayar zafi.
Diamita na waje: 1/2 "- 7" (12.7 mm - 177.8 mm);
Kaurin bango: 0.085 "- 1.000" (2.2 mm - 25.4 mm);
Hakanan za'a iya ba da sauran nau'ikan bututun ƙarfe kamar yadda ake buƙata, muddin duk sauran buƙatun A192 sun cika.
Ana kera ASTM A192 ta amfani da tsari mara kyau kuma an gama zafi ko sanyi kamar yadda ake buƙata;
Har ila yau, ganewar bututun ƙarfe ya kamata ya nuna ko bututun ƙarfe ya ƙare da zafi ko sanyi.
Karewa mai zafi: Yana nufin aiwatar da kammala matakan ƙarshe na bututun ƙarfe a cikin yanayin zafi.Bayan bututun karfe ya yi aikin sarrafa zafi kamar juyawa mai zafi ko zane mai zafi, ba a ƙara sarrafa shi ba.Bututun ƙarfe da aka gama da zafi suna da mafi ƙarfi da ƙarfi amma suna da juriya mai girma.
An gama sanyi: Ana sarrafa bututun ƙarfe zuwa girmansa na ƙarshe ta hanyoyin aiki mai sanyi kamar jujjuyawar sanyi ko zane mai sanyi a cikin ɗaki.Bututun ƙarfe da aka gama da sanyi suna da madaidaicin jurewar juzu'i da filaye masu santsi amma suna iya sadaukar da wasu tauri.
Bututun ƙarfe mara nauyi da aka gama da zafi baya buƙatar maganin zafi.
Bututun ƙarfe maras sumul da aka gama sanyi ana yi musu zafi a yanayin zafi na 1200°F [650°C] ko sama bayan maganin sanyi na ƙarshe.
| Daidaitawa | C | Mn | P | S | Si |
| ASTM A192 | 0.06-0.18% | 0.27-0.63% | 0.035% max | 0.035% max | 0.25% max |
ASTM A192 baya bada izinin ƙara wasu abubuwa zuwa abun da ke tattare da sinadaran.
| Ƙarfin ƙarfi | Ƙarfin bayarwa | Tsawaitawa | Gwajin Lalacewa | Gwajin Flaring |
| min | min | a cikin 2 in. ko 50 mm, min | ||
| 47 ku [325MPa] | 26 ku [180MPa] | 35% | Duba ASTM A450, Sashe na 19 | Duba ASTM A450, Sashe na 21 |
Sai dai in an bayyana shi a cikin ASTM A192, kayan da aka tanadar a ƙarƙashin wannan ƙayyadaddun za su dace da buƙatun da suka daceASTM A450/A450M.
Rockwell HardnessSaukewa: 77HRBW.
Don bututun ƙarfe mai kaurin bangon da bai wuce 0.2" [5.1 mm].
Brinell HardnessSaukewa: 137HBW.
Don kaurin bangon bututun ƙarfe na 0.2" [5.1 mm] ko fiye.
Don takamaiman buƙatun aiki, duba ASTM A450, Abu na 23.
· Mitar: Kowane bututun ƙarfe yana fuskantar gwajin matsa lamba na hydrostatic.
Lokaci: Rike mafi ƙarancin matsi na akalla daƙiƙa 5.
· Ƙimar matsin ruwa: An ƙididdige ta ta amfani da dabara mai zuwa.Kula da naúrar.
Inci - Raka'a Fam: P = 32000 t/D
SI Raka'a: P = 220.6t/D
P = gwajin gwajin hydrostatic, psi ko MPa;
t = ƙayyadadden kauri na bango, a cikin. ko mm;
D = ƙayyadaddun diamita na waje, a cikin. ko mm.
· Sakamako: Idan babu yabo a cikin bututu, ana ganin gwajin ya wuce.
Madadin gwajin hydrostatic kuma yana yiwuwa tare da gwajin da ba zai lalata ba.
Koyaya, ƙa'idar ba ta fayyace hanyar gwaji mara lalacewa ba za a iya amfani da ita.
Bututu idan an saka su a cikin tukunyar jirgi za su tsaya suna faɗaɗawa kuma suna yin kwalliya ba tare da nuna tsagewa ko lahani ba.Bututun zafi lokacin da aka sarrafa su yadda ya kamata za su tsaya duk aikin ƙirƙira, walda, da lankwasawa da suka wajaba don aikace-aikacen ba tare da haɓaka lahani ba.
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