SA179 tsawg carbon yeeb nkab, ntau precisely hu uaASTM A179 seamless txias -tso qis- carbon steel raj, yog siv rau tubular heat exchangers, condensers, thiab zoo xws li cov cua sov- hloov khoom siv.
Nws kuj tseem muaj feem ntau teev rau cov khoom siv hluav taws xob thiab lwm yam kev siv uas tsis muaj seamless tsim, tswj qhov ntev, zoo ductility, thiab qis - carbon steel yuav tsum tau.
Rau ASME daim ntawv thov, cov npe sib raug yogSIB-179. ASTM A179/A179M-24 npog yam tsawg kawg nkaus -phab ntsa-thickness seamless txias-drawn raj los ntawm1/8 mus rau 3 nyob rau hauv. (3.2 mus rau 76.2 mm) sab nraud txoj kab uas hla.
Yog tias koj tab tom yuav SA179 raj rau kev lag luam lossis cov khoom siv hluav taws xob, cov qib tsuas yog ib feem ntawm qhov tshwj xeeb. RFQ tseem yuav tsum tau txhais cov OD, qhov tsawg kawg nkaus phab ntsa thickness, ntev, kom muaj nuj nqis, kuaj, ntawv pov thawj, thiab tej yam tshwj xeeb uas yuav tsum tau ua.
SA179 Tsawg Carbon Tube
| Yam khoom | SA179 / ASTM A179 |
|---|---|
| Khoom siv | Tsawg- carbon steel |
| Yam khoom | Seamless raj |
| Kev tsim khoom | Txias kos |
| Kev pabcuam tseem ceeb | Thaum tshav kub kub exchangers, condensers, economizers thiab zoo xws li cov cua sov- hloov khoom siv |
| Standard OD ntau | 1/8 mus rau 3 nti (3.2 ~ 76.2 hli) |
| Phab ntsa thickness | Yam tsawg kawg ntawm phab ntsa thickness |
| Kev kho cua sov | Tom qab kos duab txias kawg, ntawm 1200℃F (650 degree) lossis siab dua |
| Lub zog tensile | 325 MPa min. |
| Yield zog | 180 MPa min. |
| Elongation | 35% min. |
| Hardness | 72 HWB max. |
| ASME npe | SA-179 qhov twg siv tau |
ASTM A179/A179M-24 xav kom lub raj xa los ntawm cov txheej txheem seamless thiab kos txias. Kev kho cua sov yog xav tau tom qab qhov kawg txias-drawing dhau ntawm1200℃F (650 degree) lossis siab dua.
ASTM A179 Tshuaj muaj pes tsawg leeg
ASTM A179 yog ib qho yooj yim tsawg- carbon steel qib. Nws cov chemistry tshwj xeeb yog:
| Lub ntsiab | Kev xav tau |
| Cov pa roj carbon (C) | 0.06–0.18% |
| Manganese (Mn) | 0.27–0.63% |
| Phosphorus (P) | 0.035% max. |
| Sulfur (S) | 0.035% max. |
Cov specification tswj cov pa roj carbon, manganese, phosphorus, thiab sulfur. Nws tsis yog Cr-Mo alloy- qib steel.
Qhov kev sib txawv ntawd dhau los ua qhov tseem ceeb thaum piv A179 nrog cov qib xws li ASTM A213 T11 lossis T22. Cov alloy- qib steel yog npaj rau cov kev pabcuam sib txawv thiab muaj cov chromium thiab molybdenum ntxiv uas tsis yog ib feem ntawm A179 qib chemistry.
Rau kev yuav khoom, cov tshuaj muaj pes tsawg leeg ntawm MTC yuav tsum raug kuaj xyuas raws li tsab ntawv ASTM A179 tau teev tseg hauv qhov kev txiav txim.
ASTM A179 Mechanical Properties
Yam tsawg kawg nkaus uas yuav tsum tau muaj xws li:
| Khoom | Kev xav tau |
| Lub zog tensile | 325 MPa min. |
| Yield zog | 180 MPa min. |
| Elongation nyob rau hauv 50 mm | 35% min. |
| Hardness | 72 HWB max. |
Qhov tsawg kawg nkaus elongation yog qhov tseem ceeb rau kev tsim cov raj, tab sis nws tsis yog los ntawm nws tus kheej lav tias ib lub raj tshwj xeeb yuav haum rau txhua txoj haujlwm khoov lossis nthuav dav.
Yog hais tias cov hlab yuav khoov, nthuav mus rau hauv ib lub raj ntawv, los yog lwm yam tsim, tus neeg yuav khoom yuav tsum tau qhia qhov yuav tsum tau qhov ntev thiab tsim tej yam kev mob es tsis txhob cia siab rau elongation ib leeg.
ASTM A179 Loj Ntau Yam
ASTM A179 / A179M-24 npog raj los ntawm:
1/8 txog 3 nti (3.2 txog 76.2 mm) sab nraud txoj kab uas hla.
Tus qauv siv ayam tsawg kawg nkaus -phab ntsa- thickness.
Thaum txiav txim, tus neeg yuav khoom yuav tsum qhia meej:
Sab nraud txoj kab uas hla
Yam tsawg kawg ntawm phab ntsa thickness
Tube ntev
Ntau
ASTM A179 / A179M / ASTM A179 / ASTM A179 / ASTM A179 / ASTM A179 / ASTM A179 / A179M / ASTM A179 / ASTM A179 / ASTM A179 / ASTM A179 / ASTM A179 / A179M / ASTM A179 / ASTM A179 / ASTM A179 / ASTM A179 / ASTM A179 / A179M / ASTM A179 / ASTM A179 / A179M / ASTM A179 / ASTM A179 / ASTM A179 / ASTM A179 / A179M / ASTM A179 / ASTM A179 / ASTM A179 / ASTM A179 / ASTM A179) thiab ASTM A179 / A179M
ASME SA-179 qhov xav tau
Kev tshuaj ntsuam xyuas
Daim ntawv pov thawj xav tau
Txhua yam kev tsim tshwj xeeb
a179 Carbon Tubes sab nraud txoj kab uas hla dimension thiab kam rau ua
| Sab nraud txoj kab uas hla, mm | Siab ntev, mm |
| 3.2 Tsawg dua lossis sib npaug rau OD＜25.4 | ±0.10 |
| 25.4 Tsawg dua lossis sib npaug rau OD Tsawg dua lossis sib npaug rau 38.1 | ±0.15 |
| 38.1 OD 50.8 | ±0.20 |
| 50.8 Tsawg dua lossis sib npaug rau OD＜63.5 | ±0.25 |
| 63.5 Tsawg dua lossis sib npaug rau OD＜76.2 | ±0.30 |
| 76.2 | ±0.38 |
a179 Seamless Tubes phab ntsa tuab thiab kam rau ua
| Sab nraum Diamter, mm | Kev kam rau siab,% |
| 3.2 Tsawg dua lossis sib npaug rau OD＜38.1 | +20/-0 |
| 38.1 Tsawg dua lossis sib npaug rau OD Tsawg dua lossis sib npaug rau 76.2 | +22/-0 |
Vim li cas SA179 siv rau Economizers?
Tus kws kho mob siv cov cua sov los ntawm boiler flue gas kom preheat boiler feedwater ua ntej nws nkag mus rau hauv lub boiler.
Lub raj yog li ntawd yuav tsum tau muab cov cua sov uas txhim khu kev qha -hloov nto thaum tuav lub siab, qhov kub thiab txias, dej chemistry, thiab flue- gas tej yam kev mob uas txhais los ntawm cov khoom tsim.
SA179 tuaj yeem yog qhov kev xaiv zoo tshaj plaws rau ntau daim ntawv thov kev lag luam vim tias nws cov kev sib txuas ntawm seamless tsim, txias - kos qhov ntev, ductility, thiab cov pa roj carbon monoxide yooj yim heev - steel chemistry.
Seamless kev tsim kho
ASTM A179 xav tau cov raj seamless. Qhov no yog ib qho ntawm cov yam ntxwv ntawm cov kev qhia tshwj xeeb thiab tseem ceeb thaum lub raj siv rau hauv cov cua sov- hloov khoom siv.
Txias- kos qhov ntev
Kev kos duab txias yog cov txheej txheem tsim kawg uas xav tau los ntawm A179. Nws tso cai rau cov chaw tsim khoom los tswj qhov kawg ntawm OD thiab phab ntsa tuab thiab tuaj yeem tsim lub tshuab nqus tsev, ntau qhov chaw zoo li qhov kub kub - cov raj tiav.
Rau cov chaw tsim khoom siv hluav taws xob, qhov kev tswj qhov ntev no tuaj yeem siv tau thaum lub raj -cov ntawv sib dhos, khoov, thiab lwm yam kev ua haujlwm.
Nws yog qhov zoo dua tsis piav qhia txog kev kos duab txias raws li txoj hauv kev ncaj qha kom nce thermal conductivity. Nws cov txiaj ntsig tseem ceeb ntawm no yog kev tswj qhov loj me, qhov chaw ntawm qhov chaw, thiab cov txheej txheem tsim khoom.
Zoo ductility
A179 yuav tsum muaj qhov tsawg kawg nkaus elongation ntawm 35%.
Qhov ntawd muab lub raj muaj txiaj ntsig zoo rau kev ua haujlwm. Qhov tseeb dabtsi yog khoov lossis raj-Kev nthuav dav tseem nyob ntawm qhov ntev ntawm lub raj, cov cuab yeej, khoov lub vojvoog, kho cua sov, thiab cov txheej txheem tsim khoom.
Tsawg- carbon steel chemistry
Cov pa roj carbon ntau yog 0.06-0.18%, manganese ntawm 0.27-0.63%, phosphorus ntawm 0.035% siab tshaj plaws, thiab sulfur ntawm 0.035% siab tshaj.
Qhov no ua rau A179 qis- carbon steel raj es tsis yog Cr-Mo alloy- cov khoom siv hlau.
Tus nqi - xaiv cov khoom siv zoo
Qhov twg cov cuab yeej tsim tsis xav tau cov hlau alloy- steel tube, qis- carbon steel tuaj yeem muab cov khoom siv qis dua li Cr-Mo lossis stainless- lwm yam hlau.
Nqe, txawm li cas los xij, yuav tsum tsis yog qhov kev xaiv nkaus xwb. Cov khoom siv yuav tsum ua kom tau raws li qhov xav tau ntawm kev tsim qauv thiab cov cai siv tau.
SA179 Kev tsim khoom txheej txheem
Ib txoj hauv kev tsim khoom rau seamless txias -raws A179 raj yog:
Steel billet → kub piercing → seamless hollow plhaub → txias kos duab → kawg thaum tshav kub kub kho → straightening → txiav → soj ntsuam → npav → packing
Cov txheej txheem zeb tiag tiag tuaj yeem sib txawv, tab sis qhov tiav A179 raj yuav tsum ua kom tau raws li qhov kev xav tau ntawm seamless tsim thiab kos duab txias.
Txias daim duab
Thaum lub caij txias txias, lub raj yog rub los ntawm qhov tuag los txo lossis tswj nws qhov ntev. Cov cuab yeej sab hauv kuj tseem siv tau los tswj cov bore thiab phab ntsa thickness.
Cov txheej txheem pab cov neeg tsim khoom ua tiav cov txheej txheem OD thiab phab ntsa tuab thiab muab cov txheej txheem tswj kom tiav.
Ib zaug ntxiv, lub ntsiab yog vim li cas los qhia txog qhov txias txias ntawm nplooj ntawv A179 yogqhov loj me thiab qhov chaw tswj, tsis yog thov nce hauv thermal conductivity.
Kev kho cua sov kawg
ASTM A179/A179M-24 yuav tsum tau kho cua sov tom qab qhov kawg kos duab txias dhau ntawm1200℃F (650 degree) lossis siab dua.
Tsis txhob piav qhov no li "normalizing." Yog tias tus neeg muag khoom siv cov cua sov tshwj xeeb- cov txheej txheem kho, cov lus hais ntawm nplooj ntawv khoom thiab MTC yuav tsum phim cov txheej txheem tiag tiag thiab cov lus qhia tshwj xeeb.
Surface condition of SA179 Tube
ASTM A179 yuav tsum tau ua tiav cov raj kom tsis muaj nplai. Ib qho me me ntawm oxidation tsis suav tias yog nplai raws li qhov tshwj xeeb.
Rau qhov kev txiav txim siab kub exchanger, cov neeg yuav khoom yuav tsum tau them sai sai rau:
Khob
Kos
Pitting
Daim duab kos
Internal paug
Tube ncaj
Xaus kev puas tsuaj
Kev tiv thaiv noo noo thaum caij tsheb thauj mus los
A179 yog carbon hlau, tsis yog stainless hlau. Yog tias cov raj yuav khaws cia rau lub sijhawm ntev lossis xa mus los ntawm qhov chaw ntub dej lossis dej hiav txwv, kev ntim khoom tsim nyog thiab kev tiv thaiv corrosion ib ntus yuav tsum xav txog.
Sib piv: SA179 vs. Related Boiler Tube Qib
| Feature | SA179 (A179) | SA192 (A192) | SA210 A1 (A210) | TIAB SA 213 T11 |
|---|---|---|---|---|
| Khoom siv chav kawm | Tsawg- carbon steel | Tsawg- carbon steel | Nruab nrab- carbon steel | 1.25Cr-0.5Mo cov hlau tsis tshua muaj hlau |
| Kev tsim khoom | Txias-kos seamless | Kub-ua tiav lossis txias- kos seamless | Kub-ua tiav lossis txias- kos seamless | Kub-ua tiav lossis txias- kos seamless |
| Lub zog tensile | 325 MPa min | 325 MPa min | 415 MPa min | 415 MPa min |
| Elongation | 35% min | 35% min | 30% min | 30% min |
| Max kev pab kub | ~ 450 degree | ~ 450 degree | ~ 485 degree | ~ 580 degree |
| Thawj daim ntawv thov | Economizers, condensers, general heat exchangers | Siab -sab boiler raj, phab ntsa dej | Phab ntsa dej, nruab nrab -kub superheaters, headers | High -kub superheaters, reheaters, petrochemical rhaub tubes |
| Nto tiav | Smooth txias -kos (zoo tshaj) | Kub- dov oxide nplai (rougher) | Kub- dov los yog txias - kos | Nws txawv ntawm tus txheej txheem |
| Tus nqi txheeb ze | qis tshaj | Tsawg | Nruab nrab | Siab |
Txoj cai xaiv tus ntiv tes xoo:Yog tias cov hlau kub nyob ntawm lossis qis dua li ntawm 450℃thiab tus nqi yog tus tsim tsav tsheb, SA179 yog tus qauv xaiv; Yog tias qhov kub siab tshaj 450 degree, hla ncaj qha mus rau SA210 A1 (rau 450-485 degree) lossis SA213 T11 (rau 485-580 degree). Tsis txhob sim thawb SA179 mus rau hauv kev tswj hwm qhov kub thiab txias - tus qauv tsis tau tsim rau cov kev pabcuam ntawd, thiab cov khoom siv tsis tau lees paub ASME tso cai rau kev ntxhov siab ntawm qhov kub thiab txias.
Qhia koj qhov loj me, qhov ntau, thiab tus qauv - peb cov engineers yuav muab cov kev daws teeb meem zoo.
Kev tshuaj xyuas thiab kuaj
ASTM A179 yog siv ua ke nrog cov kev cai dav dav siv rau cov pa roj carbon thiab qis - alloy steel hlab. A179 specification suav nrog cov kev cai rau kev tshuaj ntsuam xyuas thiab kev sim xws li hardness, flattening, flaring, flange, thiab hydrostatic testing.
Rau kev lag luam xaj, pob tshuaj ntsuam xyuas yuav suav nrog:
Tshuaj ntsuam xyuas
Thaum tshav kub kub thiab, qhov twg muaj feem xyuam, cov khoom chemistry raug tshuaj xyuas raws li qhov tshwj xeeb.
Tensile Test
Lub raj tiav yog kuaj xyuas lub zog tensile, lub zog tawm los, thiab elongation.
Hardness Test
Lub raj yuav tsum ua tau raws li qhov kev txwv hardness.
Flattening Test
Lub raj yog flattened nyob rau hauv kev tswj tej yam kev mob los xyuas nws ductility thiab tsis kam mus cracking.
Flaring Test
Lub raj kawg tau nthuav dav los ntsuam xyuas nws lub peev xwm los tiv thaiv deformation yam tsis muaj qhov cuam tshuam tsis zoo.
Flange Test
Qhov twg yuav tsum tau, lub raj yuav raug kuaj flange raws li cov kev qhia tshwj xeeb.
Hydrostatic lossis Nondestructive Electric Test
Kev ntsuam xyuas hydrostatic yog teev los ntawm A179, nrog rau kev ntsuas hluav taws xob tsis muaj kev puas tsuaj muaj nyob rau lwm qhov uas tau tso cai los ntawm cov lus qhia tshwj xeeb thiab kev yuav khoom.
Rau cov neeg yuav khoom, nws tsim nyog nug tus neeg muag khoom raws nraimCov kev xeem twg suav nrog, cov qauv twg raug siv, thiab cov txiaj ntsig twg yuav tshwm sim hauv MTC.
MTC thiab Heat Number Traceability
Rau ib qho kev lag luam lossis cov khoom siv hluav taws xob sib txuas, kev taug qab yog qhov muaj txiaj ntsig ntau dua li cov lus qhia dav dav xws li "zoo lav."
Daim ntawv pov thawj cov ntaub ntawv pov thawj yuav tsum tso cai rau tus neeg yuav khoom txuas cov raj xa khoom nrog cov khoom siv hluav taws xob thiab cov khoom tshwj xeeb.
Nyob ntawm qhov project, cov ntaub ntawv yuav suav nrog:
Khoom specification
Kub naj npawb
Tshuaj ntsuam xyuas
Mechanical test results
Hardness tshwm sim
Kub-cov ntaub ntawv kho mob
Hydrostatic lossis NDE cov txiaj ntsig
Dimensional soj ntsuam
Daim ntawv pov thawj ntawm kev ua raws cai
Yog tias thib peb - tog yuav tsum tau kuaj xyuas, nws yuav tsum tau teev ua ntej tsim khoom.
Ntim thiab Shipping
SA179 tube yog qhov cuam tshuam rau atmospheric corrosion thaum lub sij hawm thauj mus los thiab cia, tshwj xeeb tshaj yog nyob rau hauv qhov chaw ntub dej los yog ntug hiav txwv dej. Cov kev coj ua zoo tshaj plaws suav nrog:
Kev tiv thaiv kawg:Cov kaus mom yas ntawm ob qhov kawg ntawm txhua lub raj tiv thaiv kev nkag mus ntawm cov av noo, plua plav, thiab cov khoom txawv teb chaws rau hauv lub raj xa dej thaum lub sijhawm thauj khoom hiav txwv thiab qhib- thaj chaw cia
Bundle wrapping:Cov hlab yog bundled nrog steel strapping, qhwv nyob rau hauv dej-resistant woven polypropylene ntaub, thiab muab tso rau ntawm ntoo dunnage kom lub nras elevated saum lawj los yog hauv av sib cuag.
Ntoo crating:Rau me me - txoj kab uas hla lossis nyias- cov phab ntsa (piv txwv li, OD Tsawg dua lossis sib npaug li 12 hli), cov khoom siv ntoo nrog cov khoom sib cais tau pom zoo kom tiv thaiv kev khoov lossis kev puas tsuaj thaum tuav
Kev khaws cia hauv tsev xav tau:Thaum tau txais, txav cov hlab mus rau ib qho chaw ntim khoom, ventilated warehouse; Yog tias qhov chaw cia sab nraum zoov tsis tuaj yeem zam tau, tilt bundles kom tso dej tawm thiab siv vapor-phase corrosion inhibitor (VCI) zaj duab xis wrapping
Rau ib qho kev lag luam lossis cov khoom siv hluav taws xob, qhov kev qhia tshwj xeeb yog nyob ntawm tus qauv tsim tiag tiag.Yog koj xa tuaj rau pebtusOD × phab ntsa thickness, ntev, kom muaj nuj nqis, daim ntawv thov, ASTM / ASME yuav tsum tau, thiab soj ntsuam yuav tsum tau, peb tuaj yeem lees paub cov khoom siv tshwj xeeb thiab cov lus hais ua ntej tsim khoom.
FAQ
Q1: Puas yog SA179 zoo ib yam li ASTM A179?
SA-179 yog ASME tus qauv siv rau cov khoom siv sib xws hauv ASME daim ntawv thov, thaum ASTM A179 / A179M yog ASTM specification.
Rau qhov ASME-coded project, daim ntawv xaj yuav tsum txheeb xyuas cov kev xav tau ntawm ASME. Tsis txhob piav txog ob lub npe uas tsuas yog "ob qib sib txawv."
Q2: SA179 puas tuaj yeem siv rau hauv lub tshuab hluav taws xob?
Nws yuav tsum tsis txhob raug xaiv rau kev pabcuam superheater tsuas yog vim nws yog carbon{0}}steel raj.
A179 tau teev tseg rau cov khoom siv hluav taws xob sib hloov, condensers, thiab cov khoom siv hluav taws xob zoo sib xws - hloov khoom siv. Superheater xaiv nyob ntawm qhov tseeb qhov kub thiab txias, siab, tso cai rau kev ntxhov siab, oxidation ib puag ncig, thiab kev tswj hwm txoj cai. Kev kub siab dua - qhov kev pabcuam kub tuaj yeem xav tau cov hlau alloy- steel specification xws li ASTM A213 T11 lossis lwm qib uas tau teev tseg los ntawm qhov project.
Q3: Puas yog SA179 raj seamless lossis welded?
Seamless.
ASTM A179 xav kom cov raj yuav tsum tau ua los ntawm cov txheej txheem seamless thiab kos txias.
Rau cov welded carbon-steel tshav kub-exchanger thiab condenser raj, ASTM A214 yog cov ntsiab lus tseem ceeb tshaj li A179.
Q4: Dab tsi yog qhov txawv ntawm SA179 thiab SA192 raj?
Ob leeg yog seamless carbon -steel tube specifications, tab sis lawv lub hom phiaj daim ntawv thov txawv.
A179 yog tshwj xeeb rau cov txias-kho cua sov- sib pauv thiab condenser raj. A192 npog seamless carbon-steel boiler thiab superheater raj rau siab- kev pabcuam siab.
Qhov sib txawv yuav tsum tsis txhob raug txo kom "A179 muaj qhov zoo dua thaum A192 yog rau siab."
Cov cuab yeej tsim, kev pabcuam, qhov ntev, cov cai, thiab cov khoom siv tshwj xeeb yuav tsum tau txiav txim siab.
Q5: Lub raj SA179 puas tuaj yeem siv rau hauv kev pabcuam qaub?
Tsis tau.
Yog tias qhov kev pabcuam muaj H₂S, tus neeg yuav khoom yuav tsum tau qhia txog cov kev cai NACE MR0175/ISO 15156 thiab paub meej txog cov khoom siv, hardness, chemistry, thiab kev sim ua ntej xaj.
Tsis txhob lees tias tus qauv A179 tau ua raws li qaub- kev pabcuam.
Q6: Ntev npaum li cas ntawm SA179 raj muaj?
Thawj nqe lus hais tias SA179 raj tuaj yeem muab tau raws li27m ib syuav tsum tsis txhob nthuav tawm raws li ASTM qhov yuav tsum tau ua.
ASTM A179 qhia txog cov khoom yuav tsum tau ua, tab sis qhov siab tshaj plaws kev lag luam ntev nyob ntawm cov chaw tsim khoom cov khoom siv, kos duab lub rooj ntev zaum, cua sov- kho qhov cub, tuav qhov system, OD / WT ua ke, thiab kev thauj mus los.
Cim npe nrov: SA179 Tsawg Carbon Yeeb Nkab rau Economizers thiab General Service, Tuam Tshoj SA179 Tsawg Carbon Pipe rau Economizers thiab General Service manufacturers, lwm tus neeg, Hoobkas
