ASTM A179 (ASME SA179) bututun ƙarfe ne mara ƙarancin carbon-sanyi wanda aka zana don amfani da shi a cikin masu musanya zafi na tubular, na'urori, da aikace-aikacen canja wurin zafi iri ɗaya.
ASTM A179 da ASME SA179 sune ma'auni guda biyu waɗanda suka yi daidai.Don dacewa, ana amfani da ASTM A179 a ƙasa.
ASTM A179 ya dace da bututun ƙarfe tare da diamita na waje na 1/8 "- 3" [3.2mm - 76.2mm].
Botop Karfeƙwararren mai siyar da bututun ƙarfe ne daga kasar Sin, yana ba ku babban zaɓi na bututun ƙarfe mai ƙarfi na ASTM A179/ASME SA179 mai sanyi.
An sadaukar da mu don samarwa abokan cinikinmu samfura da sabis mafi inganci don tabbatar da cewa ayyukanku suna gudana cikin sauƙi.Zaɓi Botop Steel, kuma zaɓi amintaccen abokin tarayya.
Mun riga mun ambata cewa an samar da A179 ta amfani da tsarin masana'anta mara nauyi mai sanyi.Menene takamaiman matakai da ke cikin masana'anta da aka zana sanyi?Da fatan za a duba ginshiƙi mai gudana mai zuwa.
A cikin tsarin ASTM.A556Hakanan yana amfani da tsarin masana'anta mara nauyi mai sanyi amma yana musamman don dumama ruwa.Masu sha'awar za su iya samun ƙarin bayani.
Bayan zanen sanyi na ƙarshe, ana yi wa bututun ƙarfe zafi a yanayin zafi na 1200°F [650°C] ko mafi girma.
| Daidaitawa | C | Mn | P | S |
| ASTM A179 | 0.06-0.18% | 0.27-0.63% | 0.035% max | 0.035% max |
ASTM A179 baya bada izinin ƙara wasu abubuwa zuwa abun da ke tattare da sinadaran.
Taurin bututun karfe kada ya wuce 72 HRBW (taurin Rockwell).
| Ƙarfin ƙarfi | Ƙarfin bayarwa | Tsawaitawa | Gwajin Lalacewa | Gwajin Flaring | Gwajin Flange |
| 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 | Duba ASTM A450, Sashe na 22 |
Kowane bututu za a fuskanci gwajin matsa lamba na ruwa ko, idan mai siye ya ƙulla, ana iya amfani da gwajin lantarki mara lalacewa maimakon.
Bututun karfe yana kula da matsa lamba na akalla 5s ba tare da yabo ba.
Ana ƙididdige matsi na gwajin ta amfani da dabara mai zuwa:
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.
Abubuwan da ke zuwa fakitin A179 na gama gari, kuma ana iya samar da marufi na musamman bisa ga buƙatun aikin.
Bare bututu, baƙar fata shafi (na musamman);
6" da masu girma a ƙasa A cikin daure tare da slings auduga guda biyu, wasu masu girma dabam a sako-sako;
Dukansu sun ƙare tare da masu kare ƙarshen;
Ƙarshen ƙaƙƙarfan ƙaƙƙarfan ƙaƙƙarfan ƙaƙƙarfa;
Alama.
