ASTM A179 (ASME SA179) bututu ne mai ƙarancin carbon wanda aka ja da sanyi wanda ba shi da matsala don amfani da shi a cikin na'urorin musanya zafi na bututu, na'urorin sanyaya zafi, da makamantan aikace-aikacen canja wurin zafi.
ASTM A179 da ASME SA179 ma'auni ne guda biyu da suka yi daidai. Don saukaka amfani, an yi amfani da ASTM A179 a ƙasa.
ASTM A179 ya dace da bututun ƙarfe masu diamita na waje na 1/8″ – 3″ [3.2mm - 76.2mm].
Botop Karfewani kamfani ne mai samar da bututun ƙarfe mara shinge daga China, yana ba ku babban zaɓi na bututun ƙarfe masu inganci na ASTM A179/ASME SA179 masu santsi marasa shinge.
Mun himmatu wajen samar wa abokan cinikinmu kayayyaki da ayyuka mafi inganci domin tabbatar da cewa ayyukanku suna tafiya cikin sauƙi. Zaɓi Botop Steel, kuma zaɓi abokin tarayya mai aminci.
Mun riga mun ambata cewa ana samar da A179 ta amfani da tsarin kera mai sauƙin amfani da sanyi. Waɗanne takamaiman hanyoyin da ake amfani da su wajen kera mai sauƙin amfani da sanyi? Da fatan za a duba jadawalin aiwatarwa mai zuwa.
A cikin ma'aunin ASTM, an samar da shi ta hanyar amfani da fasahar zamani.A556kuma yana amfani da tsarin kera na'urorin dumama ruwa marasa matsala, amma musamman don na'urorin dumama ruwa na bututu. Waɗanda ke da sha'awa za su iya ƙarin bayani.
Bayan an gama yin amfani da zanen sanyi na ƙarshe, ana yin amfani da bututun ƙarfen a zafin da ya kai digiri 1200 na Fahrenheit [650°C] ko sama da haka.
| Daidaitacce | C | Mn | P | S |
| ASTM A179 | 0.06-0.18% | 0.27-0.63% | matsakaicin 0.035% | matsakaicin 0.035% |
ASTM A179 ba ya ba da damar ƙara wasu abubuwa zuwa ga sinadaran da ke cikinsa.
Taurin bututun ƙarfe bai kamata ya wuce 72 HRBW (ƙarfin Rockwell ba).
| Ƙarfin tauri | Ƙarfin bayarwa | Ƙarawa | Gwajin Faɗin Ƙasa | Gwajin Ƙwaƙwalwa | Gwajin Flange |
| minti | minti | a cikin inci 2 ko 50 mm, minti | |||
| 47 ksi [325 MPa] | 26 ksi [180 MPa] | Kashi 35% | Duba ASTM A450, Sashe na 19 | Duba ASTM A450, Sashe na 21 | Duba ASTM A450, Sashe na 22 |
Kowace bututu za a yi mata gwajin matsin lamba ta hanyar amfani da ruwa, ko kuma, idan mai siye ya yi haka, za a iya amfani da gwajin lantarki mara lalatawa.
Bututun ƙarfe yana riƙe matsin lamba na akalla mintuna 5 ba tare da ya zube ba.
Ana ƙididdige matsin lambar gwajin ta amfani da dabarar da ke ƙasa:
Inci - Fam Raka'o'i: P = 32000 t/D
Raka'o'in SI: P = 220.6t/D
P = matsin lamba na gwajin hydrostatic, psi ko MPa;
t = kauri na bango da aka ƙayyade, in. ko mm;
D = diamita na waje da aka ƙayyade, in. ko mm.
Ga yadda ake yin marufi na A179 a yau da kullun, kuma ana iya samar da marufi na musamman bisa ga buƙatun aikin.
Bututu mara kauri, murfin baƙi (wanda aka keɓance shi);
Girman inci 6 da ƙasa da haka. A cikin fakiti tare da majajjawa biyu na auduga, sauran girma dabam dabam;
Duk ƙarshen biyu tare da masu kare ƙarshen;
Ƙarshen fili, ƙarshen bevel;
Alamar.
