JIS B2220 Welding flange, flange na hadin gwiwa, flanid flani, flaged flani pn6-n100 DN10-DN1500

Zai iya zama babbar hanya don haɓaka mafita da sabis ɗinmu. Ofishin Jakadancinmu zai kasance don gina samfuran da masu amfani da masu amfani da kwarewar aiki don 304l 316l bakin karfe mai launin shuɗi, flange karfe mai ban tsoro, flange mai ban tsoro, flange mai ban tsoro, flange mai ban tsoro, fashin teku. Muna maraba da abokan ciniki sosai daga ko'ina cikin duniya kusan kowane irin hadin gwiwa tare da mu don gina yiwuwar samun wadataccen wurin. Mun yi wa kanmu hari da zuciya ɗaya don samar da masu amfani da su mafi kyawun kamfanin. Samfurin zai samar da a duk faɗin duniya, kamar Turai, Balika, Australia, Murcan, Hazo, wanda ke da alaƙa da firintocin 'yan kasashen waje da kuma wuraren zama na birane. Duk muna tunanin yadda yanzu muna da cikakkiyar ikon gabatar muku da kayan fata. Murna a tattara buƙatun kayanku kuma ku samar da tsarin haɗin gwiwar dogon lokaci. Muna da matukar alkawarin tuba: CSAM MAI KYAU, KYAUTA KYAUTA; ainihin farashin siyarwa, inganci mafi girma.

Sa 316 Bakin Karfe Flanes kuma yana da kyawawan halaye masu haske. Ba a buƙatar kunnawa a lokacin da aka sanya sakin abu ba da kuma babu s31600 bakin karfe mai duhu.

AL-6XN is an upgrade to 300 series alloys such as 316L\/1.4435 and 304 when high concentration of chlorides, high temperature, acidic pH levels, and time of contact are introduced to the process.

Flani wani yanki ne mai mahimmanci, lebe ko rim, ko dai waje ko na ciki, wanda ke bauta don haɓaka ƙarfi (kamar yadda flanging na katako na baƙin ƙarfe kamar i-katako ko t-katako); Don sauƙaƙe abin da aka makala \ / Canja wurin karuwa tare da wani abu (azaman flanger a ƙarshen bututu, silinda yake silima, da sauransu, ko a kan Dutsen ruwan tabarau); ko don inganta da kuma jagorantar motsin injin ko sassan sa (kamar yadda ke cikin motar dogo ko tafiye tafiye, wanda ke kiyaye ƙafafun daga gudu daga gudu. Hakanan ana amfani da kalmar "flani" don wani nau'in kayan aiki da ake amfani da shi don samar da flanges.

Bututun bututun suna haɗa bututu da abubuwan haɗin gwiwa a cikin tsarin pipping ta amfani da haɗin da aka tattara da gas. Mafi yawan filayen da aka fi amfani da su sune walallan bututun, sling flanges, flanges makafi, thelding filaye da filayen haɗin gwiwa (rami hadin gwiwa. Irin wannan nau'in haɗin a cikin bututun bututu yana sauƙaƙe Disssembly da cire haɗin don sabis da kiyayewa na yau da kullun. Mafi ƙayyadadden bayani na yau da kullun don carbon mara ƙarfe da filayen ƙarfe na bakin ƙarfe shine Ansi B16.5 \ / Asme B16.5.

Warbi ne zobe na karfe (ƙirƙira, yanke daga farantin, ko kuma an yi birgima) da aka tsara don haɗa sassan bututu, bawul, famfo ko wasu mahallin filastik. Flanges suna hade da juna ta hanyar bolts, kuma zuwa tsarin pipping ta hanyar walda ko zaren da aka yi amfani da su). Bakin karfe flani da sauki a matsayin flanid, yana nufin flanges da aka yi da bakin karfe. Abubuwan da aka gama gama gari da maki sune ASM A102 na F316 \ /3, 300, 600 da sauransu yana da cikakkiyar bayyanar da kyau.

Rubuta 316 Bakin Karfe an kera shi cikin wani darasi saboda mahimmancin ƙarfinsa kuma an rarrabe shi ta hanyar amfani da harafin "l" da sunanta. L yana wakiltar ƙananan abubuwan carbon a cikin ƙarfe.

Abubuwan da aka gina sun gina karkashin bayani a cikin Astm A182 kamar 317l bakin karfe bakin karfe an yi nufin amfani da su don amfani da yanayin zafi. Wannan takamaiman bayani yana la'akari da bukatun daban-daban waɗanda waɗannan flanges suna buƙatar daidaitawa da su. Yawancin lokaci, mai kama da mafi yawan bayanai na ASM, ASM A182 dole su yi daidai da duka injin da sunadarai da kuma hanyoyin gwaji
Haske masu flanges, wasu lokuta ana kiranta flanges a matsayin flanges na abokin koran \ / npt flanges, dauke da mace flanges Haske masu flanges sun zama ruwan dare gama gari yayin ƙirƙirar rage haɗi. Sauran salon saukar da keɓawa ne don kamuwa da su, baya daga daidaitattun tsararrun NPT kamar yadda Asme B16.5.
Flah shine sassan da ya haɗu da bututun guda biyu na ƙarewa, flange da art uku an haɗa su a matsayin rukuni na haɗin haɗi. An kara Gasket tsakanin manyan famiyu sannan kuma ya ɗaure ta hanyar kusoshi. Daban-daban matsa lamba, kauri ya bambanta, kuma kusoshi da suke amfani da su sun zama maballin flanges, amma wannan bangare ne na na'urar saiti, kamar yadda haɗin ke tsakanin flanges, ba shi da haɗin kai tsakanin flanges da famfo ruwa, ba haka bane Inapostoite don kiran famfon ruwa kamar yadda flange misalin nau'ikan, amma dangi kananan bawul, ana iya kiran shi azaman nau'ikan sassan.

Zai iya zama babbar hanya don haɓaka mafita da sabis ɗinmu. Ofishin Jakadancinmu zai kasance don gina samfuran da ke amfani da masu amfani da kwarewar aiki don flange na 304 bakin karfe, flange na carbon flange, flange mai ban tsoro, fashin teku mai ban mamaki, fashin teku mai ban mamaki, fashin teku mai ban mamaki ba, fashin teku mai ban sha'awa. Muna maraba da abokan ciniki sosai daga ko'ina cikin duniya kusan kowane irin hadin gwiwa tare da mu don gina yiwuwar samun wadataccen wurin. Mun yi wa kanmu hari da zuciya ɗaya don samar da masu amfani da su mafi kyawun kamfanin. Samfurin zai samar da a duk faɗin duniya, kamar Turai, Balika, Australia, Murcan, Hazo, wanda ke da alaƙa da firintocin 'yan kasashen waje da kuma wuraren zama na birane. Duk muna tunanin yadda yanzu muna da cikakkiyar ikon gabatar muku da kayan fata. Murna a tattara buƙatun kayanku kuma ku samar da tsarin haɗin gwiwar dogon lokaci. Muna da matukar alkawarin tuba: CSAM MAI KYAU, KYAUTA KYAUTA; ainihin farashin siyarwa, inganci mafi girma.

Bakin karfe pipless ana amfani dashi don haɗa tsawon bututu ko fiye na bututu ko don rufe bututu. Flanges suna da alaƙa da bututu don ba da izinin haɗi na kayan haɗi da sauran abubuwa, hana kwarara ko ƙara ƙarfi ko ƙara ƙarfi ko ƙara ƙarfi zuwa bututu. Ya dace da Astm A304, Asme \ / Anssi B16.5 Daidaito.

Abubuwan da aka gina sun gina karkashin bayani a cikin Astm A182 kamar 317l bakin karfe bakin karfe an yi nufin amfani da su don amfani da yanayin zafi. Wannan takamaiman bayani yana la'akari da bukatun daban-daban waɗanda waɗannan flanges suna buƙatar daidaitawa da su. Yawancin lokaci, mai kama da mafi yawan bayanai na ASM, ASM A182 dole su yi daidai da duka injin da sunadarai da kuma hanyoyin gwaji
Haske masu flanges, wasu lokuta ana kiranta flanges a matsayin flanges na abokin koran \ / npt flanges, dauke da mace flanges Haske masu flanges sun zama ruwan dare gama gari yayin ƙirƙirar rage haɗi. Sauran salon saukar da keɓawa ne don kamuwa da su, baya daga daidaitattun tsararrun NPT kamar yadda Asme B16.5.
Flah shine sassan da ya haɗu da bututun guda biyu na ƙarewa, flange da art uku an haɗa su a matsayin rukuni na haɗin haɗi. An kara Gasket tsakanin manyan famiyu sannan kuma ya ɗaure ta hanyar kusoshi. Daban-daban matsa lamba, kauri ya bambanta, kuma kusoshi da suke amfani da su sun zama maballin flanges, amma wannan bangare ne na na'urar saiti, kamar yadda haɗin ke tsakanin flanges, ba shi da haɗin kai tsakanin flanges da famfo ruwa, ba haka bane Inapostoite don kiran famfon ruwa kamar yadda flange misalin nau'ikan, amma dangi kananan bawul, ana iya kiran shi azaman nau'ikan sassan.

Tsarin flangared mai dauke da shi (wanda ake kira flange 'ya kwantar da hankali') yana amfani da zaren dunƙule don haɗa flange zuwa bututu. An yanke akwatin namin namiji a kan bututun bututu ƙarshen alhali an yanka mace ta mata a cikin flani; A namiji thery the bututu ne to sai a goge shi cikin flangar da mai saukar ungulu.

Ana amfani da flanges makafi don dakatar da bututun mai. Yawancin lokuta, ana amfani da makafin flange mai ɗaukar hoto ga kusancin haɗi. Babban karfe & makamai kuma yana haifar da werkstoff babu 1.4441 Bakin Karfe bututu a wasu sifofi. Kayan aiki 316 sun fi dadassara da ƙarfi fiye da na talakawa 304 Bakin Karfe.

Abubuwan da aka gina sun gina karkashin bayani a cikin Astm A182 kamar 317l bakin karfe bakin karfe an yi nufin amfani da su don amfani da yanayin zafi. Wannan takamaiman bayani yana la'akari da bukatun daban-daban waɗanda waɗannan flanges suna buƙatar daidaitawa da su. Yawancin lokaci, mai kama da mafi yawan bayanai na ASM, ASM A182 dole su yi daidai da duka injin da sunadarai da kuma hanyoyin gwaji
Haske masu flanges, wasu lokuta ana kiranta flanges a matsayin flanges na abokin koran \ / npt flanges, dauke da mace flanges Haske masu flanges sun zama ruwan dare gama gari yayin ƙirƙirar rage haɗi. Sauran salon saukar da keɓawa ne don kamuwa da su, baya daga daidaitattun tsararrun NPT kamar yadda Asme B16.5.
Flah shine sassan da ya haɗu da bututun guda biyu na ƙarewa, flange da art uku an haɗa su a matsayin rukuni na haɗin haɗi. An kara Gasket tsakanin manyan famiyu sannan kuma ya ɗaure ta hanyar kusoshi. Daban-daban matsa lamba, kauri ya bambanta, kuma kusoshi da suke amfani da su sun zama maballin flanges, amma wannan bangare ne na na'urar saiti, kamar yadda haɗin ke tsakanin flanges, ba shi da haɗin kai tsakanin flanges da famfo ruwa, ba haka bane Inapostoite don kiran famfon ruwa kamar yadda flange misalin nau'ikan, amma dangi kananan bawul, ana iya kiran shi azaman nau'ikan sassan.

Bututu mai fashin baya, wanda kuma aka sani da harshen wuta. Flanges sune abubuwan da ke cikin bututun mai da suke haɗa bututu. Hakanan ya dace da haɗi tsakanin na'urori biyu (bututu tare da bawul ko bututu tare da kayan aiki).

Flange shine hanyar haɗawa da haɗawa bayan ƙwallon ƙafa. Ana amfani da flanges lokacin da haɗin gwiwa na buƙatar rolling. Yana bayar da sassauƙa don kulawa. Flani yana haɗu da bututu da kayan aiki da bawuloli. Ana ƙara flanges masu fashewa a cikin tsarin bututun mai idan an tabbatar da kulawa ta yau da kullun yayin aikin shuka.

Butt Weld Welnes ana samun su a duka da aka tashi da kuma lebur saiti. Mafi yawan flanges na yau da kullun? Sch 120 ko garkuwa da motoci 160, masu nauyi masu nauyi kamar 600 # zuwa 1500 #, suma suna gama gari a cikin flanges Welnel. HT bututun siyar da kewayon fannoni da yawa a cikin A10, A105, Bakin Karfe, Super Duplex Karfe da Super Dupleys da Super Dupyx.

Flange na iya zama farantin don rufe ko rufe ƙarshen bututu. Wannan ana kiranta makaho mai kauri. Don haka, ana ɗaukar flanges su zama kayan haɗin ciki waɗanda ake amfani dasu don tallafawa sassan injin na inji.

Abubuwan da aka gina sun gina karkashin bayani a cikin Astm A182 kamar 317l bakin karfe bakin karfe an yi nufin amfani da su don amfani da yanayin zafi. Wannan takamaiman bayani yana la'akari da bukatun daban-daban waɗanda waɗannan flanges suna buƙatar daidaitawa da su. Yawancin lokaci, mai kama da mafi yawan bayanai na ASM, ASM A182 dole su yi daidai da duka injin da sunadarai da kuma hanyoyin gwaji
Haske masu flanges, wasu lokuta ana kiranta flanges a matsayin flanges na abokin koran \ / npt flanges, dauke da mace flanges Haske masu flanges sun zama ruwan dare gama gari yayin ƙirƙirar rage haɗi. Sauran salon saukar da keɓawa ne don kamuwa da su, baya daga daidaitattun tsararrun NPT kamar yadda Asme B16.5.
Flah shine sassan da ya haɗu da bututun guda biyu na ƙarewa, flange da art uku an haɗa su a matsayin rukuni na haɗin haɗi. An kara Gasket tsakanin manyan famiyu sannan kuma ya ɗaure ta hanyar kusoshi. Daban-daban matsa lamba, kauri ya bambanta, kuma kusoshi da suke amfani da su sun zama maballin flanges, amma wannan bangare ne na na'urar saiti, kamar yadda haɗin ke tsakanin flanges, ba shi da haɗin kai tsakanin flanges da famfo ruwa, ba haka bane Inapostoite don kiran famfon ruwa kamar yadda flange misalin nau'ikan, amma dangi kananan bawul, ana iya kiran shi azaman nau'ikan sassan.

Featuret 74 Bakin karfe don kyakkyawan orrosion juriya, an yarda da wannan alkama Weld whnite a wuyansa ta hanyar wulakanci a wuyansa. Ana iya bincika yankin da aka buɗe ta sauƙin rediyo. Puthetan bututu da kuma fashin jirgin sama mai saukarwa yana rage juyawa da lalacewa a cikin bututun. Flanne ne mai kyau kyau don amfani a aikace-aikacen ku kuma ya dace don amfani da iska, ruwa, mai, gas, da tururi na halitta.

Wadannan flantes na karfe 304 suna samuwa a cikin aikace-aikace iri-iri na cikin gida da masana'antu a cikin masu girma dabam da kuma mãtansu don biyan bukatun musamman na abokin ciniki. An yi amfani da 304 a aikace-aikace kamar su kamar sassan injin, sukurori, magada, magabta da kayan aiki na abinci.

Ana amfani da flanges a aikace-aikace iri-iri don dalilai daban-daban. Bakin karfe dina 1.4307 ana amfani da flanges na makaho don kawo karshen bututu ta rufe haɗin. Flanges sun zo ta daban daban, bayanai dalla-dalla da ka'idoji. Girman iri ne? inci zuwa inci 48 a cikin maras muhimmanci a cikin girman.

Flashes flanges na samar da sauki ga tsaftacewa, dubawa ko gyara. Yawancin lokaci suna zuwa siffofin zagaye amma za su iya zuwa cikin square da siffofin real. Flanges an haɗa su da juna ta hanyar bolting kuma sun shiga cikin tsarin pipping ta hanyar walda ko an tsara su ga takamaiman matsin lamba; 150lb, 300lb, 400lb, 600lb, 900lb, 1500lb and 2500lb.

Akwai filayen Austrenitic daban-daban a kasuwa. SS flange kuma ana kiranta flange bakin karfe daya ne daga cikinsu. Bakin karfe fitilun suna samuwa a cikin maki iri-iri tare da bambance-bambancen injina. Saboda juriya da juriya na lalata, an yi amfani da wadannan fashin karfe na bakin karfe a acid da tsirrai taki. Bakin karfe masu masana'antun masana'antu a Indiya da aka ba da shawarar waɗannan flanges saboda juriya ga juriyar lalata da ke da alaƙa da damuwa. SS 316 farantin farantin ss sune manyan flanges na aji tare da manyan abubuwan molybdenum.

Abubuwan da aka gina sun gina karkashin bayani a cikin Astm A182 kamar 317l bakin karfe bakin karfe an yi nufin amfani da su don amfani da yanayin zafi. Wannan takamaiman bayani yana la'akari da bukatun daban-daban waɗanda waɗannan flanges suna buƙatar daidaitawa da su. Yawancin lokaci, mai kama da mafi yawan bayanai na ASM, ASM A182 dole su yi daidai da duka injin da sunadarai da kuma hanyoyin gwaji
Haske masu flanges, wasu lokuta ana kiranta flanges a matsayin flanges na abokin koran \ / npt flanges, dauke da mace flanges Haske masu flanges sun zama ruwan dare gama gari yayin ƙirƙirar rage haɗi. Sauran salon saukar da keɓawa ne don kamuwa da su, baya daga daidaitattun tsararrun NPT kamar yadda Asme B16.5.
Flah shine sassan da ya haɗu da bututun guda biyu na ƙarewa, flange da art uku an haɗa su a matsayin rukuni na haɗin haɗi. An kara Gasket tsakanin manyan famiyu sannan kuma ya ɗaure ta hanyar kusoshi. Daban-daban matsa lamba, kauri ya bambanta, kuma kusoshi da suke amfani da su sun zama maballin flanges, amma wannan bangare ne na na'urar saiti, kamar yadda haɗin ke tsakanin flanges, ba shi da haɗin kai tsakanin flanges da famfo ruwa, ba haka bane Inapostoite don kiran famfon ruwa kamar yadda flange misalin nau'ikan, amma dangi kananan bawul, ana iya kiran shi azaman nau'ikan sassan.

Zai iya zama babbar hanya don haɓaka mafita da sabis ɗinmu. Ofishin Jakadancinmu zai kasance don gina samfuran da ke amfani da masu amfani da kwarewar aiki don flange na 304 bakin karfe, flange na carbon flange, flange mai ban tsoro, fashin teku mai ban mamaki, fashin teku mai ban mamaki, fashin teku mai ban mamaki ba, fashin teku mai ban sha'awa. Muna maraba da abokan ciniki sosai daga ko'ina cikin duniya kusan kowane irin hadin gwiwa tare da mu don gina yiwuwar samun wadataccen wurin. Mun yi wa kanmu hari da zuciya ɗaya don samar da masu amfani da su mafi kyawun kamfanin. Samfurin zai samar da a duk faɗin duniya, kamar Turai, Balika, Australia, Murcan, Hazo, wanda ke da alaƙa da firintocin 'yan kasashen waje da kuma wuraren zama na birane. Duk muna tunanin yadda yanzu muna da cikakkiyar ikon gabatar muku da kayan fata. Murna a tattara buƙatun kayanku kuma ku samar da tsarin haɗin gwiwar dogon lokaci. Muna da matukar alkawarin tuba: CSAM MAI KYAU, KYAUTA KYAUTA; ainihin farashin siyarwa, inganci mafi girma.

Abubuwan da aka gina sun gina karkashin bayani a cikin Astm A182 kamar 317l bakin karfe bakin karfe an yi nufin amfani da su don amfani da yanayin zafi. Wannan takamaiman bayani yana la'akari da bukatun daban-daban waɗanda waɗannan flanges suna buƙatar daidaitawa da su. Yawancin lokaci, mai kama da mafi yawan bayanai na ASM, ASM A182 dole su yi daidai da duka injin da sunadarai da kuma hanyoyin gwaji
Haske masu flanges, wasu lokuta ana kiranta flanges a matsayin flanges na abokin koran \ / npt flanges, dauke da mace flanges Haske masu flanges sun zama ruwan dare gama gari yayin ƙirƙirar rage haɗi. Sauran salon saukar da keɓawa ne don kamuwa da su, baya daga daidaitattun tsararrun NPT kamar yadda Asme B16.5.
Flah shine sassan da ya haɗu da bututun guda biyu na ƙarewa, flange da art uku an haɗa su a matsayin rukuni na haɗin haɗi. An kara Gasket tsakanin manyan famiyu sannan kuma ya ɗaure ta hanyar kusoshi. Daban-daban matsa lamba, kauri ya bambanta, kuma kusoshi da suke amfani da su sun zama maballin flanges, amma wannan bangare ne na na'urar saiti, kamar yadda haɗin ke tsakanin flanges, ba shi da haɗin kai tsakanin flanges da famfo ruwa, ba haka bane Inapostoite don kiran famfon ruwa kamar yadda flange misalin nau'ikan, amma dangi kananan bawul, ana iya kiran shi azaman nau'ikan sassan.

Asme b16.5 wn \ / lwn \ / makanta \ / LAp hadin gwiwa 150 # -2500 # 1 \ / $ 1

Flanged hadin gwiwa yana hade da uku daban-daban daban-daban da ya hade ko da yake; flanges, gas, da kuma bolting; wanda ake tattare da wani tasiri, mai dacewa. Ana buƙatar masu sarrafawa na musamman a cikin zaɓi da aikace-aikacen duk akwai abubuwan da zasu iya samun haɗin gwiwa, wanda ke da karfin gwiwa.

Asme B36.19m ita ce madaidaiciyar ƙira don bututun ƙarfe na bakin ciki, wanda ke haifar da girma, haƙuri, da abubuwan sarrafawa don duka welded da balessan bututu.

Kodayake Molybdenum abu ne mai kyau, amfani da shi na iya rage girman zafin creep na farantin farantin gr F11. Gravitation da kuma lalata gashin ƙarfe na iya faruwa lokacin da zazzabi ya wuce digiri 500 Celsius. Chromium ta kara zuwa182 F11 Alloy Karfe Cl.2 Finaku da bututun bututu don hana rage girman tsadar Creep da kuma hoto. Bugu da kari, wanda kara chromium ya kuma ba da juriya na iskar shaka iri-iri.

Ana amfani da flanges a aikace-aikace iri-iri don dalilai daban-daban. Bakin karfe dina 1.4307 ana amfani da flanges na makaho don kawo karshen bututu ta rufe haɗin. Flanges sun zo ta daban daban, bayanai dalla-dalla da ka'idoji. Girman iri ne? inci zuwa inci 48 a cikin maras muhimmanci a cikin girman.

304
Type 316l bakin karfe yana buƙatar walling anning kawai a cikin aikace-aikacen damuwa kawai.
Zai iya zama babbar hanya don haɓaka mafita da sabis ɗinmu. Ofishin Jakadancinmu zai kasance don gina samfuran da ke amfani da masu amfani da kwarewar aiki don 316l 310s 321 flange flanges, karfe mai farantin flange, flange mai ban tsoro, fashin teku mai ban sha'awa. Muna maraba da abokan ciniki sosai daga ko'ina cikin duniya kusan kowane irin hadin gwiwa tare da mu don gina yiwuwar samun wadataccen wurin. Mun yi wa kanmu hari da zuciya ɗaya don samar da masu amfani da su mafi kyawun kamfanin. Samfurin zai samar da a duk faɗin duniya, kamar Turai, Balika, Australia, Murcan, Hazo, wanda ke da alaƙa da firintocin 'yan kasashen waje da kuma wuraren zama na birane. Duk muna tunanin yadda yanzu muna da cikakkiyar ikon gabatar muku da kayan fata. Murna a tattara buƙatun kayanku kuma ku samar da tsarin haɗin gwiwar dogon lokaci. Muna da matukar alkawarin tuba: CSAM MAI KYAU, KYAUTA KYAUTA; ainihin farashin siyarwa, inganci mafi girma.

Ra'ayin 150 # -900 # 1 \ / \ / -24 "
Sae 304 Bakin Karfe shine mafi yawan baƙin ƙarfe na yau da kullun. Karfe da ke ɗauke da cututtukan chromium (tsakanin 18% da 20%) da nickel (tsakanin 8% da 10%) [1] ƙananan ƙarfe marasa ƙarfi. Karfe ne na bakin karfe. Ba shi da ƙarancin wutar lantarki da na ƙwaƙwalwa fiye da ƙarfe na carbon. Magnetic ne, amma kasa da magnetic fiye da karfe. Yana da babban juriya na lalata baki fiye da ƙarfe na yau da kullun kuma ana yadu sosai saboda sauƙi wanda aka kafa ta cikin siffofi da yawa. [1]