ASTM A333 Grade 6 Bututu

ASTM A333 Grade 6 yana rufe bututun ƙarfe marasa ƙarfi da walda waɗanda aka yi amfani da su a ƙananan yanayin zafi ƙasa zuwa -50 digiri F (-46 digiri).

An ƙera ƙarfen don riƙe tauri a ƙarƙashin yanayin ƙasa, yana tallafawa amintaccen matsi da kwanciyar hankali a cikin buƙatar tsarin cryogenic kamar tashoshi na LNG, tsire-tsire masu sarrafa gas, da kayan aikin bututun Arctic.

Mabuɗin halayen aiki:

• Tsage juriya a ƙarƙashin ƙarancin zafi
• Ƙarfin ƙarfi a lokacin hawan fara sanyi
• Amintaccen walda don shigarwar filin
• Mai yarda da ƙananan tsarin matsa lamba na ASME -

Ƙananan sulfur da phosphorus suna inganta taurin ƙima a ƙananan yanayin zafi.

Charpy V{0}Gwajin daraja yana tabbatar da juriya ga LNG da sabis na arctic.

Ana samar da bututun ASTM A333 Grade 6 ko dai maras sumul ko kuma kamar bututun walda, amma a cikin duka biyun ana saita tsarin don biyan ƙananan buƙatun taurin zafin jiki. Ana farawa da samarwa da tsabta, mai kyau{4}}ƙarfe don tabbatar da cewa kayan na iya ɗaukar tasiri a yanayin zafi mara nauyi. Ana sarrafa ƙirƙira da girma don haka bututun ya kiyaye daidaitaccen OD, bango da madaidaiciya, wanda ke da mahimmanci lokacin da aka riga aka keɓance layi da filin-. Hakanan ana kula da ingancin saman ciki don kula da kyawawan halayen kwarara don mai, gas ko kafofin watsa labarai masu amfani.

Bayan an kafa, ana saka bututun ta hanyar yanayin zafi mai sarrafawa{0}}zagayowar magani. Wannan matakin ba kawai don sauke damuwa ba ne kawai don dawo da ductility da kuma fitar da ƙananan ƙananan abubuwa don ƙimar tasirin Charpy a - 45 digiri (ko zafin da aka ƙayyade a cikin tsari) za a iya saduwa. Daidaita daidaitaccen daidaitawa ko zafin jiki yana tace hatsi, yana inganta taurin ƙima, kuma yana ba bututun mafi kyawun juriya ga tasirin kwatsam ko matsa lamba a yanayin sabis na sanyi.

Ana iya haɗa takamaiman abubuwan haƙura da buƙatun NDE don aikace-aikace masu mahimmanci-.

ASTM A333 Grade 6 yana ba da ingantaccen walda don haɗuwa na zamani da ginin filin.

Koyaya, dole ne a adana kaddarorin shiyyar da zafi (HAZ) ya shafa a hankali don tabbatar da ƙarancin aikin zafi:

• Daidaita tsarin waldatare da SMAW, GTAW, da GMAW don duka kantuna da haɗin gwiwar filin
• Cancantar WPS/PQRda ake buƙata don tabbatar da tasiri taurin bayan walda a cikin ayyukan cryogenic
• Ƙuntataccen sarrafa shigar da zafidon hana ƙwanƙwasa hatsi da asarar ƙima a cikin HAZ
• PWHT bisa yanayin sabisda buƙatun lambar ƙira don haɓaka daidaituwar haɗin gwiwar weld
• Binciken kabu (UT/RT)an ba da shawarar don LNG da aikace-aikacen arctic tare da babban sakamakon gazawar

Aikace-aikacen tsarin walda da kyau yana tabbatar da cewa bututun da aka shigar yana kula da juriyar karaya da ɗigowa{0}} aiki mai tsauri a ƙarƙashin sake zagayowar fara sanyi.

Karin gwaji (PMI / UT 100% / na uku{1}}shaida) akwai don raka'a masu mahimmanci.

• LNG regasification da liquefaction shuke-shuke
• Cryogenic da bututun firiji
• Arctic mai & gas watsa
• Rawanin tasoshin matsa lamba na zafi- & kayayyaki
• Yanayin sanyi na kan teku da kan teku{0}
• An ƙera shi don gujewa gaɓar gazawar ƙasa a cikin faɗuwar zafin jiki mai tsanani.

Octal Pipe yana goyan bayan aikin bututun cryogenic tare da ingantattun hanyoyin walda, ingantattun bayanan gwajin tasiri, da kuma gano abubuwa daga niƙa zuwa shigarwa.

Yarda -mayar da hankali, dubawa na musamman, da ingantaccen isarwa sun sa ASTM A333 Grade 6 daga Octal Pipe ya zama tabbataccen zaɓi ga LNG da ƙananan mahallin sabis na zafin jiki{3}.

Tuntuɓi yanzu

FAQ

 

 

Q1: Menene ASTM A333 Grade 6 bututu amfani dashi?

A1: Ƙarƙashin sabis na matsa lamba mai ƙarancin zafi inda ake buƙatar ƙarfin tasiri.

Q2: Menene zafin gwajin tasirin tasirin da aka saba kayyade don A333 Grade 6?

A2: Yawanci -45 digiri (-50 digiri F), sai dai idan aikin ya ƙayyade zafin gwajin daban.

Q3: Menene bambanci tsakanin ASTM A333 Grade 6 da ASTM A106 Grade B?

A3: A333 Grade 6 ya cancanci ƙaramar -ƙasasshen zafin jiki (an gwada tasirin tasiri), yayin da A106 Grade B galibi don sabis na zafi mai girma{{5}.

Q4: Shin zan zaɓi bututu maras kyau ko ERW welded A333 Grade 6 bututu?

A4: Zaɓi dangane da NPS / kauri na bango, iyakar NDE da ake buƙata, da sharuɗɗan karɓar aikin.

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