Bayani na ASTM A333abu ne na carbon karfe tubing abu da ake amfani da shi a cikin cryogenic da sauran aikace-aikace na bukatar notched tauri.Yana da ikon yin amfani da shi a cikin mahalli marasa ƙarfi zuwa -45°C (-50°F) kuma ana samunsa a cikin nau'ikan marasa sumul da walda.
Ana iya amfani da ASTM A333 a cikin wanisumul ko welded tsari.
The m karfe bututu tsari ne zuwa kashi zafi gama da sanyi kõma.Kuma yana buƙatar nunawa sama da alamar.
Bututun ƙarfe maras sumul shine zaɓi na farko don matsananciyar yanayi, yanayi mai wahala, da lokacin da ake buƙatar bututu masu kauri na musamman.
ASTM A333 GR.6 yana buƙatar kulawa ta hanyar ɗayan hanyoyin masu zuwa don sarrafa ƙananan tsarin sa:
● Daidaitawa: Zafafa zuwa yanayin zafi iri ɗaya na aƙalla 1500 °F [815 ° C], sannan a yi sanyi a cikin iska ko a ɗakin sanyaya na tanderun da ke sarrafa yanayi.
● Zazzagewa bayan daidaitawa: Bayan daidaitawa, ana iya sake mai da shi zuwa yanayin zafin da ya dace bisa ga shawarar masana'anta.
● Don matakan da ba su dace ba, ana iya cimma wannan ta hanyar sarrafa yanayin zafi na aikin zafi da ayyukan ƙarewa mai zafi don yanayin zafi na ƙarshe ya kasance daga 1550 zuwa 1750 ° F [845 zuwa 945 ° C] sa'an nan kuma sanyaya a cikin iska ko a cikin yanayi- Tanderun da aka sarrafa daga zafin farko na aƙalla 1550 °F [845 °C].
● Yin zafi bayan sarrafa zafi da aiki da kuma gama maganin zafi ana iya sake mai da shi zuwa yanayin zafin da ya dace bisa ga shawarar masana'anta.
Quenching da tempering: Maimakon kowane ɗayan jiyya na sama, za a iya kula da bututun da ba su da kyau na maki 1, 6, da 10 ta hanyar dumama zuwa yanayin zafi iri ɗaya na aƙalla 1500 ° F [815 ° C], sannan a kashe a cikin ruwa reheating zuwa dace tempering zafin jiki.
AGa kowane raguwa na 0.01% carbon ƙasa da 0.30 %, haɓakar 0.05% manganese sama da 1.06 % za a ba da izini zuwa matsakaicin 1.35% manganese.
CTa hanyar yarjejeniya tsakanin masana'anta da mai siye, ana iya ƙara iyakar niobium zuwa 0.05 % akan nazarin zafi da 0.06 % akan nazarin samfur.
DKalmomin Niobium (Nb) da Columbium (Cb) madadin sunaye iri ɗaya ne.
Dukiyar Tensile
| Daraja | Ƙarfin ƙarfi | Ƙarfin bayarwa | Tsawaitawa | |
| a cikin 2 in. ko 50 mm, min, % | ||||
| Tsayi | Canza | |||
| Bayani na ASTM A333 | 415 MPa [60,000 psi] | 240MPa [35,000 psi] | 30 | 16.5 |
A elongation a nan shi ne kawai na asali m.
Sauran Gwaje-gwaje
ASTM A333 yana da gwaji mai ba da haske, gwajin tasiri, baya ga gwajin tensile.
Masu zuwa sune yanayin gwajin tasirin tasiri na aji 6:
| Daraja | Tasiri Zazzabi | |
| ℉ | ℃ | |
| Bayani na ASTM A333 | - 50 | - 45 |
Kowane bututu za a yi masa gwajin lantarki ko na ruwa mara lalacewa.
Gwajin Hydrostatic:ASTM A999Sashe na 21.2 za a hadu;
Gwajin lantarki mara lalacewa: zai dace da buƙatun ASTM A999, Division 21.3;
Matsayi: ASTM A333;
Darasi: 6 ko GR 6
Nau'in Bututu: Bututun ƙarfe mara ƙarfi ko welded;
Girman SMLS SMLS: 10.5 - 660.4 mm;
Jadawalin bututu: SCH10, SCH20, SCH30, SCH40, SCH60, SCH80, SCH100, SCH120, SCH140 da SCH160.
Shaida: STD, XS, XXS;
Rufi: Paint, varnish, 3LPE, FBE, 3LPP, HDPE, galvanized, epoxy tutiya-arziƙi, ciminti nauyi, da dai sauransu
Shiryawa: Tufafi mai hana ruwa, akwati katako, bel na karfe ko bundling na karfe, filastik ko madaidaicin bututun ƙarfe, da dai sauransu na musamman.
Kayayyakin da suka dace: Lanƙwasawa, flanges, kayan aikin bututu, da sauran samfuran da suka dace suna samuwa.
