Phau ntawv qhia no npogcarbon steel ASTM A105 taub qab -welding txo cov yeeb nkab ceg fittingslos ntawm lub kaum sab xis uas yog qhov tseem ceeb rau qhov project engineers thiab procurement managers: dab tsi yuav tsum tau qhia, dab tsi los saib rau, thiab yuav ua li cas lub regional project yuav tsum tau. HT PIPE yog ib tug thawj coj stockist thiab exporter thoob ntiaj teb nrog ntau tshaj 16 xyoo ntawm kev txawj ntse nyob rau hauv thoob ntiaj teb kev lag luam. Peb muab cov kav dej, daim hlau, cov kab tuav, thiab ntau yam ntawm cov yeeb nkab fittings, flanges, thiab li qub.Tiv tauj pebtam sim no rau cov quotes dawb thiab cov ntaub ntawv khoom ntiag tug.
Txo tee (ASME B16.9 / ASME B16.28):Ib qho peb - kev sib txuas haum qhov twg cov ceg qhov hluav taws xob me dua qhov khiav. Cov yeeb nkab khiav ncaj qha mus; ceg poob tawm ntawm 90 degrees ntawm qhov txo txoj kab uas hla. Ob qhov kawg yog beveled rau pob tw -welding. Dimensions ua raws li ASME B16.9 rau tees mus txog 48", nrog B16.28 npog luv luv luv luv luv luv luv luv luv luv luv luv luv luv luv luv luv luv luv luv luv luv luv luv luv luv luv luv luv luv luv luv luv luv luv luv luv luv luv luv luv luv luv luv luv luv luv luv luv luv luv mus txog 48"
Qhov txo qis tee yog ib qho - thooj wrought haum - feem ntau thawb- tsim los yog hydroformed los ntawm seamless yeeb nkab - uas txhais tau tias tsis muaj welds ntxiv dhau ntawm peb lub voj voog cov yeeb nkab welds ntawm cov ntsiab lus txuas.
Butt-weld ceg qhov hluav taws xob haum (MSS SP-97):Feem ntau hu ua weldolet thaum ceg txuas yog pob tw -weld type. Qhov no yog ib qho forged haum uas welds ncaj qha mus rau cov yeeb nkab khiav ntawm phab ntsa sab nrauv thiab hloov mus rau cov yeeb nkab me me ntawm lub pob tw -weld kawg. Tsis zoo li ib qho kev txo qis, cov yeeb nkab khiav yog txuas mus ntxiv - koj txuas lub qhov hluav taws xob mus rau cov yeeb nkab phab ntsa, tsis nyob nruab nrab ntawm ob ntu yeeb nkab.
Qhov haum yog integrally reinforced, lub ntsiab lus ntawm forging nws tus kheej muab cov hlau thickness uas yuav tsum tau them rau lub qhov txiav nyob rau hauv cov yeeb nkab khiav. Tsis tas yuav tsum muaj cov ntaub ntawv sib cais nyob rau hauv feem ntau cov qauv tsim.
Cov Khoom Muag Khoom
Bar & Rod
Phaj & Ntawv
Coil & Sawb
Tube & Tube
Haum: Flange, Tee, Luj Tshib, Reducer thiab lwm yam.
Forging: Nplhaib, Ncej, Vajvoog, Thaiv thiab lwm yam.
Vim li cas ASTM A105 Dominates Carbon Steel Ceg Fittings
ASTM A105 (thiab nws cov kev hloov pauv tsis zoo A105N) yog lub neej ntawd forged carbon steel qib rau siab- muaj cov kav dej hauv qhov chaw nruab nrab thiab qhov kub siab. Cov spec npog flanges, fittings, li qub, thiab lwm yam forged qhov chaw siv hauv cov tshuab siab. Rau ceg fittings tshwj xeeb, A105 yog cov khoom xaiv rau ntau qhov laj thawj:
Cov cuab yeej siv tshuab ntaus qhov chaw qab zib rau nruab nrab - kev pabcuam siab.A105 muab lub zog tensile yam tsawg kawg nkaus ntawm 485 MPa thiab qhov tsawg kawg nkaus ntawm 250 MPa, nrog rau 30% elongation yam tsawg kawg nkaus. Qhov ntawd yog lub zog txaus rau Chav Kawm 150 txog Chav Kawm 900 piping systems ntawm qhov kub txog li 425℃(800℃F) yam tsis tas yuav tsum tau ntxiv cov hlau alloy. Rau cov ceg sib txuas hauv cov txheej txheem piping - cov kab hydrocarbon, lub taub hau lub taub hau, dej siv hluav taws xob - qhov no suav nrog feem ntau ntawm cov kev pabcuam yam tsis muaj tshaj - qhia.
Cov ntsiab lus carbon thiab weldability.A105 caps carbon ntawm 0.35%, uas ua rau cov khoom siv weldable nrog cov txheej txheem preheat (feem ntau 80-120℃rau cov seem tuab). Koj tsis xav tau cov lus qhia ntxaws ntxaws-weld kev kho cua sov uas qis- cov qib alloy zoo li F11 lossis F22 xav tau. Rau kev tsim thiab kho cov vuam ntawm cov ceg sib txuas, qhov no tseem ceeb heev - tus neeg cog lus nyob deb nroog Indonesia tsis tau teeb tsa rau PWHT hauv zos ntawm 6-nti ceg qhov hluav taws xob.
Normalization hloov kev sib tham.Standard A105 yog muab raws li -forged los yog annealed. A105N tau ua kom zoo li qub (cua sov saum toj kawg nkaus qhov kub thiab txias ua raws li cov cua txias), uas ua kom zoo dua cov qauv nplej, txhim kho cov tawv nqaij, thiab txo cov kev pheej hmoo ntawm cov pob txha tawg. Ntau qhov kev qhia tshwj xeeb ntawm Middle Eastern thiab North African tam sim no xav tau A105N meej meej rau cov ceg fittings hauv kev pabcuam hydrocarbon, tom qab cov lus qhia tau kawm los ntawm kev ua tsis tiav qhov twg raws li -forged A105 fittings tawg nyob rau hauv thermal cycling. Yog tias koj tab tom hais lus rau SABIC lossis ANNOC qhov project, cia siab tias A105N yuav yog ib qho tsis yog{10}} cov kab lus sib tham.
Tus nqi txoj hauj lwm piv rau lwm txoj kev.A105 forged ceg outlets thiab txo tees zaum zoo hauv qab qis-kub carbon steel (A350 LF2), alloy steel (F22), thiab stainless hlau (F304 / F316) nyob rau hauv nqe. Rau qhov tsis yog -corrosive, tsis yog -cryogenic ceg kev sib txuas - uas piav qhia txog cov khoom siv hluav taws xob feem ntau thiab cov txheej txheem dej, qis-siab chav, thiab tsis yog-kev pabcuam hydrocarbon - qhia txog dab tsi tshaj li A105 yog kev siv nyiaj pov tseg uas koj tus neeg siv khoom tus nqi engineering tshuaj xyuas yuav chij.
Dimensional Standards: Dab tsi tiag tiag tseem ceeb ntawm daim duab
Cov ntawv tshwj xeeb nyiam sau txhua tus qauv cov khoom kov. Rau kev yuav khoom, cov qauv peb sab tiag tiag tsav kev tsim khoom thiab tshuaj xyuas lub pob tw -weld txo ceg fittings:
ASME B16.9 - Factory-Made Wrought Butt-Vuam Fittings
Tswj txo tees. Tus txheej txheem txhais qhov chaw - mus rau - qhov kawg qhov ntev, sab nraud txoj kab uas hla ntawm lub bevel, thiab phab ntsa thickness ntawm weld kawg. Rau kev txo cov tees, B16.9 qhia meej tias cov ceg qhib qhov sib npaug ntawm OD ntawm ceg yeeb nkab loj, thiab kev khiav yog sib npaug ntawm cov yeeb nkab loj. Phab ntsa tuab ntawm ob qhov kawg sib npaug sib npaug ntawm cov yeeb nkab raws sijhawm - ib qho 6 "× 4" SCH40 txo tee muaj 6 "SCH40 khiav thiab 4" SCH40 ceg, nrog rau kev hloov pauv tshwm sim hauv lub cev haum.
Kev kam rau siab koj yuav tsum mob siab txog: nruab nrab- mus rau- qhov kawg qhov ntev ntawm kev txo cov tees yog tuav rau ± 1.6 hli (1/16 ") rau qhov ntau thiab tsawg txog 10". Tshaj li 10", qhov kev kam rau siab qhib rau ± 3.2 hli. Yog tias koj cov duab kos duab tau ua qauv rau cov yeeb nkab kom nruj, qhov kev sib haum xeeb ntawd - mus hla ntau lub fittings tuaj yeem thawb koj cov yeeb nkab tawm ntawm cov khau.
MSS SP-97 - Integrally Reinforced Forged ceg qhov hluav taws xob Fittings
Tswj lub taub qab -weld ceg qhov hluav taws xob (weldolets). Tus txheej txheem txhais tau hais tias qhov haum ntawm qhov ntev ntawm qhov sib npaug ntawm cov yeeb nkab loj thiab cov ceg yeeb nkab loj, nrog rau qhov ntev ntawm lub qhov (qhov deb ntawm cov yeeb nkab nruab nrab mus rau sab saum toj ntawm qhov haum), lub weld bevel lub kaum sab xis, thiab qhov chaw ntxiv.
Tshuaj muaj pes tsawg leeg
| Lub ntsiab | A105 Requirement |
|---|---|
| Cov pa roj carbon (C) | 0.35% max |
| Manganese (Mn) | 0.60–1.05% |
| Phosphorus (P) | 0.035% max |
| Sulfur (S) | 0.040% max |
| Silicon (Si) | 0.10–0.35% |
Cov txheej txheem tsim khoom: Forged vs. Wrought, thiab vim li cas nws hloov tus nqi
ASTM A105 yog ib qho kev qhia tshwj xeeb. Qhov ntawd txhais tau hais tias cov khoom siv raw yog ib lub pob zeb los yog paj ntoo uas ua kom sov thiab zoo li nyob rau hauv siab (rauj, xovxwm, lossis lub nplhaib cov menyuam) rau hauv qhov haum geometry. Rau cov khoom siv hluav taws xob (MSS SP-97), tag nrho cov khoom siv yog forged - lub cev, lub ntsej muag, cov ceg hloov, thiab cov weld bevel yog tag nrho tsim nyob rau hauv forging tuag, tom qab ntawd tiav-machined ntawm CNC khoom.
Txo tees rau ASME B16.9 yog ib zaj dab neeg sib txawv. Qhov haum yog "wrought" - txhais tau tias nws yog tsim los ntawm cov yeeb nkab lossis phaj, tsis yog forged los ntawm billet. Cov txheej txheem ntau yog hydraulic bulge forming: ib tug ntev ntawm seamless yeeb nkab yog muab tso rau hauv ib tug tuag, thiab hydraulic siab expands cov ceg qhov hluav taws xob thaum lub tuag constrains lub kawg zoo. Tom qab ntawd qhov kawg ntawm kev khiav yog txiav mus rau qhov ntev thiab beveled. Rau qhov ntau thiab tsawg (saum toj no 24 "), tee tej zaum yuav fabricated los ntawm welding tsim phaj seem ua ke - cov no yog "fabricated tees" thiab lawv nqa txawv soj ntsuam yuav tsum tau.
Tus nqi sib txawv ntawm lub forged ceg qhov hluav taws xob thiab lub wrought txo tee rau tib qhov me me ua ke tuaj yeem yog qhov tseem ceeb.A 6 "× 4" SCH40 A105 txo tee yuav raug nqi $ 35-55 ib thooj los ntawm cov chaw tsim khoom hauv Suav teb. Qhov sib npaug 6 "× 4" A105 taub qab -weld weldolet (SP-97) hauv SCH XS yuav khiav tau $45–75. Cov ceg hluav taws xob raug nqi ntau dua rau ib qho kev sib txuas, tab sis koj txuag ntawm kev teeb tsa (ib qho tsawg dua vuam, tsis muaj cov yeeb nkab txiav) thiab qhov kev txhawb nqa yog tsim rau hauv.
Kev kho cua sov: A105 vs. A105N hauv Kev Xyaum
Qhov "N" hauv A105N txhais tau hais tias qhov haum tau zoo li qub - rhuab mus rau kwv yees li 870-920℃(1600-1690℃F) thiab huab cua-txias. Qhov no tsis yog xaiv tau rau ntau daim ntawv thov; nws yog qhov project specification yuav tsum tau. Nov yog vim li cas:
Raws li -forged A105 tuaj yeem muaj cov khoom siv kho tshuab tsis sib xws.Cov txheej txheem forging tsim cov kev taw qhia cov nplej ntws thiab sib txawv ntawm cov cua txias thoob plaws qhov haum. Lub crotch cheeb tsam ntawm ib ceg qhov hluav taws xob - seem thickest - cools slowest thiab muaj peev xwm tsim coarse grain qauv nrog qis toughness. Normalization homogenizes microstructure, muab koj cov khoom zoo ib yam thoob plaws qhov haum.
Tsawg-kev pabcuam kub xav tau kev ua haujlwm zoo.ASME B31.3 yuav tsum muaj kev cuam tshuam rau cov pa roj carbon steel qis dua -29℃(-20℃F). Txuj A105 tsis yog tsim rau qis-kev pabcuam kub - uas yog A350 LF2 yog rau. Tab sis txawm tias qhov kub tsis txias (0℃rau -29 degree), A105N muab cov tawv tawv zoo dua li -forged A105 thiab tej zaum yuav ua tau nrog kev ntsuam xyuas ib txoj cai. Rau cov haujlwm hauv txias- thaj chaw huab cua - Northern China, Central Asia, high-altitude South America - A105N yog qhov kev nyab xeeb tshwj xeeb.
Normalization ntxiv tus nqi thiab lub sijhawm ua haujlwm.Lub voj voog kho cua sov ntxiv 4-8 teev rau ib pawg, ntxiv rau lub sijhawm thauj khoom / tshem tawm ntawm qhov cub. Cov neeg tsim khoom uas tsis muaj nyob hauv - lub peev xwm ua kom lub tsev zoo li qub yuav tsum tau tawm, ntxiv 1-2 lub lis piam rau lub sijhawm tsim khoom. Yog tias koj qhov project xav tau A105N, xyuas kom meej tias cov chaw tsim khoom muaj nyob rau hauv -kev kho cua sov hauv tsev - outsourcing tsim kom muaj qhov sib txawv ntawm kev tswj xyuas zoo thiab kev pheej hmoo ntawm lub sijhawm.
FAQ: Cov lus nug Cov neeg yuav khoom tiag nug
Dab tsi yog qhov txawv ntawm A105 thiab A105N rau ceg fittings?
A105N yog normalized - cua sov- kho kom zoo dua cov qauv nplej thiab txhim kho toughness. Standard A105 yog raws li -forged los yog annealed. A105N raug nqi ntau dua thiab siv sijhawm ntev dua los tsim, tab sis ntau qhov haujlwm - tshwj xeeb tshaj yog nyob rau hauv Middle East thiab rau kev pabcuam qaub - xav tau nws. Yog tias koj qhov spec hais tias A105N, tsis txhob txais A105 yam tsis tau sau ntawv pom zoo sib txawv.
Kuv puas tuaj yeem siv lub tee txo qis es tsis txhob siv cov ceg ntoo kom txuag tau tus nqi?
Tsuas yog cov yeeb nkab khiav tuaj yeem raug txiav thiab cov ceg ntawm qhov chaw paub thaum tsim. Yog tias cov yeeb nkab khiav yuav tsum nyob twj ywm (cov kab uas twb muaj lawm, qhov xav tau pigging, lossis qhov chaw txwv), koj xav tau ib lub qhov hluav taws xob. Kev sib piv tus nqi yuav tsum suav nrog kev teeb tsa - peb welds rau tee vs. ob rau qhov hluav taws xob - tsis yog tus nqi haum xwb.
Puas yog A105 ceg fittings xav tau PWHT tom qab vuam?
Feem ntau tsis yog, rau cov qauv phab ntsa thicknesses ntawm ambient kub kev pab cuam. ASME B31.3 xav tau PWHT rau carbon steel welds saum toj no tej thicknesses (feem ntau 19 hli rau P-No.1 cov ntaub ntawv) los yog nyob rau hauv qaub kev pab cuam. Rau feem ntau SCH40 thiab SCH80 ceg sib txuas, preheat ntawm 80-120℃yog txaus. Txheeb xyuas cov cai siv tau thiab qhov project spec.
Kuv yuav ua li cas thiaj paub tseeb tias tus neeg muag khoom tau tsim A105N thiab tsis yog outsource xwb?
Nug rau qhov normalization furnace specification thiab kub cov ntaub ntawv. Ib lub chaw tsim khoom nrog rau hauv - kev kho cua sov hauv tsev tuaj yeem muab cov kab kos rau lub tshuab hluav taws xob qhia lub sijhawm tiag tiag - qhov kub thiab txias rau koj qhov cua sov. Yog tias lawv tsis tuaj yeem tsim qhov no, lawv yog outsourcing - thiab koj tau them nyiaj rau qhov tsis zoo ntawm kev tswj hwm.
Lub sijhawm ua haujlwm rau A105 taub qab yog dab tsi -welding txo ceg fittings?
Rau cov qauv loj thiab cov sij hawm los ntawm cov khoom lag luam lossis cov khoom lag luam tsis tu ncua: 15-25 hnub ex- ua haujlwm los ntawm Suav tuam ntxhab, 20-35 hnub los ntawm cov tuam txhab Indian. Rau qhov tsis yog- qauv kev sib xyaw ua ke, A105N normalization, lossis qhov loj me (saum toj 12"), ntxiv 2-4 lub lis piam. Rau qhov project kom muaj nuj nqis uas yuav tsum tau kuaj TPI thiab 3.2 daim ntawv pov thawj, ntxiv 1-2 lub lis piam rau kev tshuaj ntsuam xyuas thiab cov ntaub ntawv.
