ASTM A312 Pipe inox

ASTM A312 bɛ ostenitiki nɛgɛ inox pipe min tɛ sɔgɔ, min bɛ solda, ani min nɛnɛ ka bon{1}}baarakɛminɛnw na, walasa ka baara kɛ ni fɛn ye min bɛ sɔgɔsɔgɔ ani min bɛ wuli{2}}funteni kɔrɔtalen na, kemikɛli baarakɛcogo, saniya, kɔgɔ bɔli, ani balansi-jirifɛnw na funteni-falen-falen/boyi-tubabu o nɔ na, ​​o bɛ bin A213/A269 jukɔrɔ, saniya siraw bɛ A270 jukɔrɔ, wa a ka c’a la, hakɛw bɛ tugu ASME B36.19M (Sch 5S/10S/40S/80S) kɔ kuloridi-minɛnw kɔnɔ minnu bɛ ni oksizɛni ye walima minnu bɛ oksizɛni sɔrɔ, kɔgɔjidaji-nɛnɛbɔyɔrɔw kɛrɛfɛ, ani kɔfɛ porozɛ minnu bɛ saniya ni baarakɛwaati bila jɔyɔrɔ fɔlɔ la, A312 ka kalasi suganditaw ni a sanfɛla finiw nafa ka bon kɛrɛnkɛrɛnnenya la.

Sanni yamaruya fanba bɛ sinsin kalasi denbaya fitinin dɔ kan. Dual-marking i n'a fɔ304/304Lwalima316/316Lbɛ welding nɔgɔya HAZ kɛrɛfɛ ka sɔrɔ ka fanga laɲiniw mara stock line kelen kɔnɔ.

Tablo 1 - A312 hakɛ minnu bɛ sɔrɔ tuma caman na ani baarakɛcogo danma

* Sɔrɔli ni sɔrɔko bɛ danfara ka kɛɲɛ ni mara ni mansin sira ye.

Aw bɛ baara kɛ ni nin jatebɔ ninnu ye walasa ka sɛgɛsɛgɛli kɛ joona; wajibiyalen labanw ka kan ka tugu ASTM/ASME bɔko labanw na ani sannikɛlaw ka fɛnw ɲɛfɔcogo la.

Tablo 2 - Simi jiralan (wt.%) .

Tablo 3 - So fitinin min bɛ kɛ cogoya la-funteni jiginni

Jatebɔ minnu bɛ kɛ dilancogo la, olu bɛ bɔ o de ladegun minnu bɛ se ka kɛ ni funteni yeka bɔ kode waleyalenw na sanni ka bɔ so-funteni jatew dɔrɔn na.

A ka c’a la, pibiliki hakɛw bɛ tugu o kɔASME B36,19M ye. Sugandili kɛli5S/10S/40S/80Swaatibolodalenw ka kan ka degun, sɔgɔli hakɛ, ani welda sɔrɔli balansi. Walasa ka jɔli kɛcogo ɲuman sɔrɔ, porozɛ caman bɛ tigɛ-ka se-janya yɔrɔw sugandi walasa ka forow sɔgɔli dɔgɔya. Labɛn laban bɛ bɛn ni joli ye: tigɛlen gansan walima kɛnɛ-tigɛlen ka kɛ orbital ni socket baara kama, beveled for butt welds. Ni orbital welding walima critical leak testing bolodara, OD ni kogo muɲuli gɛlɛnw bɛ dɛmɛ ka fitinin-up jɛnsɛnni dɔgɔya. Surface suganditaw ye pickled/passivated walimayeelen-anɛnɛ (BA) .; porozɛ minnu saniya ka gɛlɛn walima minnu ka gɛlɛn ka dɔgɔ ID kan, olu ka kan ka finidoncogo ni sɔnni jateminɛw fila bɛɛ ɲɛfɔ.

Sira fila bɛɛ ye A312 ta ye, wa u bɛ se ka kɛ cogo kelen na baara la ni funteni furakɛli ni NDE ɲɛfɔra ka ɲɛ. Welded (ERW/EFW) bɛ seko ni musaka dɔgɔyali di NPS belebelebaw ni boli janw na, ni a kɛra ko seams ye solution-annealed ani passivated dafalen ye. A ka c’a la, a ka fisa ni seamless ye yɔrɔ minnu na degun tɛmɛnenw, kurukuru sirilenw, walima spool complexes bɛ barika wɛrɛ ɲini. Donanw ka kan ka sira min jira, o bɛ sɔn ani sɛgɛsɛgɛli min bɛ bɛn baara laɲininen ma.

A312 sitɛmu minnu bɛ ɲɛtaa sɔrɔ, olu bɛ daminɛ butiki kɔnɔ sanni u ka daminɛ baara la. Ostenitic inox pipe ka kan ka bɔli to solution dafalen-annealed ani teliya la cogo la walasa chrome carbides ka wuli kokura ani ka austenitic matrix kelen ka segin a cogo kɔrɔ la. Pipe welded bɛ kɛ yɔrɔ minnu na, seams bɛ na ni solution kelen ye-annealed state; fɛnɲɛnɛma yɔrɔ dɔw walima sigida laminiw bɛ fari faga barisa u bɛ mikrosɔrɔsiraw ɲagaminen to ani ka sɔgɔsɔgɔli jaabi kelen to.

Surface integrity bɛ ɲɛnabɔ i n’a fɔ ɲɔgɔndan: fabrication, cleaning, passivation, ani verification. Funteni tintin, nɛgɛ min bɛ don a kɔnɔ, ani kulori tolenw ye fɛn saba ye minnu ka teli ka kɛ sababu ye ka sɔgɔsɔgɔninjɛ kɛ ka kɔn a waati ɲɛ. Ni kulɛri fɛn o fɛn tora welda kɔfɛ, aw bɛ o bɔ ni masin ye, o kɔfɛ, aw bɛ filimu pasif lasegin a cogo kɔrɔ la ni furakɛli ye ni kemikɛli ye i n’a fɔ a ɲɛfɔlen don cogo min na poroze ɲɛfɔli kɔnɔ (a tigi caman bɛ tali kɛ izini kɛcogo la i n’a fɔ ASTM A380/A967). Baarakɛyɔrɔ minnu bɛ ID nɔgɔlenba ɲini walima rouging tendency dɔgɔman, bright-annealed (BA) product bɛ se ka ɲɛfɔ ka fara sɔn sariyaw kan ID fini ni saniya kan.

Weld-kɛrɛfɛ baara kɛcogo ka teli ka bɔ taabolo kololi la ka tɛmɛ kalasi sugandili kan. Baara kɛli ni L-grades walima stabilized grades ye welda kɛrɛfɛ, o bɛ dɛmɛ ka se ka sensibilisiyɔn kɛlɛ; gazi inert purging high-quality inert gas purging ID kan, o bɛ funteni tintin ni ɔkisizɛni sɛgɛsɛgɛli dɔgɔya; ani post-weld saniya ka ɲɛ, o bɛ faraw yɔrɔw bali. Baarakɛminɛnw ni kunnafonidilanw ka kan ka kɛ fɛn nɔgɔlenw ye-dɔrɔn-karɔbɔni-nɛgɛ burusiw, marifa cilenw, walima buguri sɔgɔlenw bɛ se ka nɛgɛ hɔrɔnma don a kɔnɔ min bɛ kɔfɛ ka nɔgɔ ani ka filimu pasif tiɲɛ.

Saniya ni a lakanani bɛ jiribolo datugu. ID bɛ ko cogo min na, a jalen don, ani a lakanani cogo min na, a laban datugulanw bɛ don cogo min na, ani a bɔgɔlanw bɛ siri cogo min na walasa ka kulori tacogo ni a fɛnɲɛnamafagalanw doncogo kɔlɔsi a marali ni a cituma na, aw bɛ o ɲɛfɔ. Dalilu nafama minnu sigilen don bololabaara kama, olu ye funteni-furakɛli taabolow ye, passifasiyɔn sɛbɛnw, ID saniya jaabiw, ani ni a ɲɛfɔra, gɛlɛya walima nɛgɛ-nɔgɔli sɛgɛsɛgɛliw. Ni o kɔrɔsili ninnu sɛbɛnna kunnafonidilan kɔnɔ, ka baara kɛ tuma bɛɛ, A312 layini minnu bɛ wele ko welded ani seamless, olu bɛ u yɛrɛ minɛ cogo kelen na foro kɔnɔ, wa u bɛ to u ka sɔgɔsɔgɔninjɛ kunbɛnni na waati jan kɔnɔ.

Sanni i ka kɛ marifaw sɛgɛsɛgɛli sɛbɛn ye, i ka miiri daliluw siratigɛ la. Fɛn kelen bɛ degun dafalen jira (kuran sɛgɛsɛgɛli jilama walima min tɛ tiɲɛni kɛ A312 kelen-kelen bɛɛ la). Dɔ wɛrɛ bɛ kogo ni ID tɛmɛsira sinsin (eddy-current walima UT janya 100% kan sistɛmu kɔrɔlenw kama). Yɔrɔ minnu na sensibilisation ye farati ye, intergranular corrosion method (ASTM A262) bɛ fara a kan. PMI bɛ alloy identité sɛgɛsɛgɛ bundles kan. Sɛbɛnw sigilen bɛ MTC nɔfɛtaama di ka bɔ funteni na ka taa a bila fɛnɲɛnamafagalan na, ni sɔnni sariyaw ni kunnafonidicogo minnu bɛnna ITP kɔnɔ. Ni tigi y’a ɲini, mɔgɔ sabanan-seereya (misali la,BV, SGS) bɛ se ka labɛn.

Tablo 4 - Donanw forow ani sɛbɛnni danmadɔw

Porozɛw kama minnu jɔra u lamini naASTM A312 ye nɛgɛ ye min tɛ sɔgɔ, Octal Pipe (Octal Pipe) ye304/304L, 316/316L, 321/321H, 347/347H ani kalasi kɛrɛnkɛrɛnnen sugandilenw ni solution-annealed finishes, pickling/passivation, cut-to-janya baara ani sɛbɛnw bɛ bɛn porozɛ ITPw ma. Mɔgɔ sabanan-sɛgɛsɛgɛli yɛrɛmahɔrɔnyalenw bɛ se ka labɛn ni ɲinini kɛra.

J1: ASTM A312 (ASME SA312) pipe inox bɛ kɛ mun na?
A1:O ye austenitic inox pipe ye min bɛ kɛ ka funteni-ba ni general corrosive service pipe ye.

J2: Ne bɛ se ka TP304/304L ni TP316/316L sugandi cogo di ASTM A312 pipe kama?
A2:Aw bɛ 304/304L sugandi walasa ka sɔgɔsɔgɔninjɛ caman sɔrɔ; aw bɛ 316/316L sugandi walasa ka pitting/crevice kunbɛn ka ɲɛ kuloridiw la.

J3: Ne ka kan ka mun ɲini walasa ka ASTM A312 pibiliki jogo sɛgɛsɛgɛ sani a ka san?
A3:Aw bɛ MTC/traceability, hydrotest walima NDE test results, PMI, ani corrosion testing kofɔlen o kofɔlen ɲini (misali la, ASTM A262) ka fara dimension/finish checks kan.

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