Chifukwa cha ntchito zomwe zimagwiritsidwa ntchito, zitsulo zitsulo zimadzipeza

Incluloy Anoy 800 yozungulira imafanana ndi sigloy 800 bar, ndi kulolera zina kwa aluminiyamu, titanium ndi kaboni. Awa salin n0811 scoloy 800 ozungulira amapezeka kwa makasitomala athu ofunika m'mizere yosiyanasiyana, woumba wogawana ndi kusinthanitsa ndi kusinthanitsa kwa mtengo wokwanira.

Monl 400 ili ndi kukana kwabwino kwa chloride nthochi ion kutsitsa kuphwanya.
Sch40 Monol 400 chitoliro chimasankhidwa kukhala nambala ya Werkstoff 2.4360 ndi N04400. Chipika 400 chimadziwikanso kuti Monil Anoy chitoliro cha 400, Monl 400 Pipe & Nickel Chitoliro 400.
Kutalika: Malinga ndi zomwe mukufuna. "

Nickel alloy pipe & chubu
Nickel Anoy Fronges
Magalasi okhazikika - omwe adayikapo sayansi-nickel-cobalt matobala, Kovar Smows, ali ndi mzere wowonjezera wowonjezera wofanana ndi galasi lolimba mkati mwa kutentha kwina
254 stated s3125 iPipe

Iswees osawoneka bwino kwambiri a sing'anga osawoneka N06600 ndi Astm B167 ndi omwe amapangidwa kuti apirire kwambiri ndikubwera ndi chitsimikizo chachikulu.

2205 Chitsulo chosapanga dzimbiri chimakhala choposa kawiri zomwe zimapanga chitsulo chosapanga chosapanga chosapanga dzimbiri. Khalidwe ili limalola opanga kuti achepetse kulemera mukamapanga zinthu, kupereka izi kwaulere kuposa 316,317l.

Zitsulo zosapanga dzimbiri ndi chitsulo chomwe chimalimbana ndi dzimbiri. Ili ndi 11% chromium ndipo imatha kukhala ndi zinthu monga kaboni, zina zosakhala ndi zitsulo zina kuti mupeze zomwe akufuna. Kutsutsa kopanda dzimbiri kuti chiwonongeke kumabweretsa chifukwa cha chromium, omwe amapanga kanema wongokhala womwe umatha kuteteza nkhaniyo ndikuchira pamaso pa mpweya.

Zizindikiro za Nickel-Copy-Copy 400 monol 2.4360 molunjika rod ndiyabwino kwambiri opsinjika ku chloride ku chloride movutikira mukakumana ndi zowononga m'matumbo. Monl 400 ndi a Haloy ndi Nickel omwe amadziwika masiku ano chifukwa cha ntchito yake yayitali. Alloy ali ndi kukana bwino acid ndi alkali. Kuphatikiza apo, ili ndi mphamvu zabwino zokhala ndi mphamvu, duckity, kukhala waulimi wabwino kwambiri, ndipo imatha kuumitsidwa ndi ntchito yozizira. Kuphatikiza apo, itha kugwiritsidwa ntchito poizona ndi kutentha kuyambira kuchotsera mpaka 538 digiri Celsius.

Inter 36 ® ndi chitsulo-chitsulo chotsika kwambiri chomwe chili ndi 36% Nickel, IMPARS 36 ili ndi zochulukirapo pakukula kwa kutentha kwa a Crogenic pafupifupi + 260 ° C).

Gawo lathu la anyezi kwa Asmme a 105 sharn steve stones ndi muyeso wapamwamba, chifukwa tili ndi nkhawa kuti akwaniritse malondawo mosatekeseka. Timagwiritsa ntchito milandu ya Plywood \>

Nilo Anoy 36, w.NR 1.3912, Inciar 36 ® ndi chitsulo chotsika kwambiri chomwe chili ndi 36% Nickel ndipo ali ndi gawo la kufalikira kwa gawo limodzi la chitsulo cha kaboni pafupifupi.

Mapulogalamu achitsulo osapanga dzimbiri ndi chinthu chosankha chonyamula madzi otchinga kapena udzi, ma slorries ndi mipweya yambiri, kutentha kwambiri kapena matupi obiriwira omwe akukhudzidwa. Chifukwa cha zokongoletsa za chitsulo chosapanga dzimbiri, chitoliro nthawi zambiri chimagwiritsidwa ntchito pogwiritsa ntchito zomangamanga.

? Ngakhale akusintha mobwerezabwereza, zowoneka bwino zopambana, kuthekera kumawonetsa chifukwa chake kuvala bwino. Komanso, kuyambira giredi 304 ndiloyamwa zomwe zingapangitse mosavuta mawonekedwe, imapangidwa mosavuta mu mtundu uliwonse wa mtundu wa strenge kapena.

Mphamvu yayikulu ndi kutukula kwa Al6xn Alloy zimapangitsa kuti ikhale yabwino kuposa zitsulo zosapanga dzimbiri ndi zinthu zokwera mtengo kwambiri.

FSTEOLLOY C2000 ikupezeka mu mitundu yosiyanasiyana ndi makulidwe amtunduwu, mtundu uwu wa chromium-molybdenum aroyoy amadziwika bwino chifukwa cha mphamvu zake zazikulu komanso kukana.

Timapereka mainjini osiyanasiyana a Inm 105

316l 1.4401 s31603 Chipika chosapanga dzimbiri ndi njira yolimba komanso yolimba yofananira yomwe imagwiritsidwa ntchito pazosiyanasiyana za mafakitale ndi malonda. Izi s31603 chitoliro chimapangidwa kuchokera pazinthu zapamwamba za 316l osapanga dzimbiri mosapanga dzimbiri mosapanga chipongwe, oxidation ndi chomata, zomwe zimapangitsa kuti zikhale zabwino m'malo mwazinthu zovuta kapena zovuta.

FOSTELOLELOY B2 chitoto chawuma chimakankhira mapangidwe a chimanga cha chimanga cham'madzi chofiyira, ndikupangitsa kukhala koyenera kwa ntchito zamankhwala ambiri mu mkhalidwe wa mankhwalawo.
ASTM B407 SIMIS N08800 Sylloy 800 Spellise paipe

Mitengo yathu yachitsulo yopanda kusefukira ndi yopanda kutentha kwambiri kwa kutentha kwa nthawi yayitali komanso kutukula, ndikuwapanga kukhala abwino kwa m'badwo wa mphamvu, injini, nsalu zoweta ndi kutentha kwina komanso kutentha kwina. Amadziwikanso kuti ndi mipiringidzo ya S34700, miphika yopanda maziko iyi imakhala ndi malo owoneka bwino kwambiri poyerekeza ndi magawo ena monga magawo osapanga dzimbiri, ndi chitsulo chabwino.

Ma coil 625 amadziwika ndi kukana kwake kwabwino kwa oxidation, kutentha kwambiri komanso kutopa. ASTM B443 SANDO N06625 SIVELEILE imagwiritsidwa ntchito kwambiri mu anthospace, mankhwala kutengera ndi mafuta ndi mafakitale chifukwa champhamvu kwambiri.

Asme B36.19M ndiye wofanana ndendende ndi mapaipi achitsulo osapanga dzimbiri, zomwe zimafotokoza kukula kwake, kulolerana, ndi zomwe amapanga maenda owala komanso osaka.

Banja la moly limatha kupirira kutentha kwambiri ndikukhalabe ndi mphamvu m'mikhalidwe yosasinthika.

ASMM A312 TP316 ndi njira yokhazikika ya msoko, komanso kuzizira kwambiri osakhazikika opaleshoni ya chitsulo chosapanga dzimbiri zomwe zimagwiritsidwa ntchito kutentha kwambiri ndi ntchito wamba. Chitoliro chosawoneka bwino mafakitale chimapangidwa kuchokera ku chromium, nickel, ndi molybdenum, omwe amapereka SS Quams Stuam Turnion ku kutukula ndi dzimbiri.

316 Zitsulo zosapanga dzimbiri pali chitsulo china chosapanga chosapanga dzimbiri chomwe chimafuna kulimba, kukhazikika, komanso kukana kuwonongeka, koma kumagwiritsa ntchito chitsulo chosapanga dzimbiri. Katundu wodziwika kwambiri wa 316 Zitsulo zosapanga dzimbiri ndizosakaniza zopondera, makamaka kuchokera ku chloride zochokera ku chloride zokhala ndi madzi am'madzi monga madzi am'madzi ndi mankhwala ambiri a mafakitale.

Nickel Anoy 400 ndi Monl 400, omwe amadziwikanso kuti ndi N04400 Nictal-Copy-Copy-Copy kukhala makamaka mwa atatu a Nickel ndi chachitatu. Nickel Anoy 400 amadziwika chifukwa chokana kusiyanasiyana, kuphatikiza alkalis (kapena asidi), madzi amchere, ma hydrofluoric acid. Kuyambira monoy 400 kapena Aloy 400 ndi chitsulo chozizira chogwira ntchito, chivomerezichi chimakhala cholimba, kuuma ndi mphamvu. Pogwira ntchito yozizira astm B164 SARD N04400 bar stock, alloy imayang'aniridwa ndi kupsinjika kwamakina, komwe kumapangitsa kusintha kwa micrestructuctuctution ya Alloy.

Invalsel 718 ndi alloy-chromium-chromium-chromium-chromium-chromium-chromium-chromium-chromium-chromium-chromium-chromium yomwe imagwiritsidwa ntchito kwambiri pamapulogalamu apamwamba monga Aweslospace ndi majini agalu. Chimodzi mwazinthu zofunika kwambiri pakupanga a Ism B670 Invelve 718 ndiye kuti mbale yogubuduza. Pali mitundu iwiri yayikulu ya mbale za Intery18 zomwe zilipo pamsika: kuwotcha mbale zowombera.

Duptux Steal & ndodo
Chitsito chopanda maziko cha 316 chakhala chinthu chofunikira kwambiri kwa gawo la mafakitale. Chitsulo ichi ndi chrome chimadziwika kuti ndikukana kwake kuvunda, komanso kukhazikika kwake. 316 Chitsulo chosapanga dzimbiri chimatha kupangidwa muzosaso komanso machubu owuma kuti akwaniritse zosowa zapadera za kasitomala.

Nickel kutengera 800 inclooy chitoliro chomwe chimadziwika kuti ndi kukana bwino kuwonongeka. Makamaka kuyankhula, chisumbulu 800 chitoliro chimapereka kukana mokwanira zotsutsana ndi ma carburization onse komanso oxidation kutukula.

Chingwe chimakhala chachiwiri chomwe chimagwiritsidwa ntchito polumikizana pambuyo potalika. Ma flanges amagwiritsidwa ntchito ngati zolumikizira zolumikizira. Imapereka kusinthasintha kukonza. Flange imalumikiza chitoliro ndi zida ndi mavuvu osiyanasiyana. Kuledzera kumawonjezeredwa mu dongosolo lapaipi ngati kukonza pafupipafupi komwe kumafunikira pa ntchito yobzala.

Al6xn ndi chitsulo chosapanga dzimbiri chosakhazikika ku chloride pansi, crevice kutukuka komanso kupsinjika kuwonongeka. Al6xn ndi Alloy a 6 wokhazikika womwe umapangidwa ndipo umagwiritsidwa ntchito m'malo ovuta. Ili ndi Nickel (24%), Molybdenum (6.3%), nayitrogeni ndi chromium yomwe imapangitsa kuti zisautso, chloride pansi. Al6xn imagwiritsidwa ntchito makamaka pokana zolimba komanso zopondera ku chlorisi. Ndi chitsulo chosapanga dzimbiri.

Ubwino wa ma stones a Dupya amaphatikiza: Kusanduka kwabwino komanso kugwiritsa ntchito kutopa kwambiri kutopa, kukana kupsinjika kwa chipongwe (makamaka kulowera kwa chloride kuthyolako).

Zimakhala zovuta kwambiri ndi sulfuric acid, chloride, bromides, iodide ndi mafuta acid acid amatha kusintha kutentha kwambiri. Kupanga mankhwala ena kumafuna kugwiritsa ntchito chitsulo chosapanga dzimbiri kuti mupewe kuipitsidwa ndi zitsulo kwambiri.

FOSTELOOY PIP TUBE B2 B3 X C22 C2000 C276 SMSS yodya chitoliro chachitsulo
Din976 Chitsulo chosapanga chitsulo chosapanga chingwe chokwanira
Epinzonter wa ambiri a mafakitale, khalani ogwiritsa ntchito, osakhazikika,
ASTM A276 347 Din 14541 04 Flat SS 304 316 Yopangidwa Pasinde Yopanda Chitsulo
Din2568 RF Steel Pipe Lovenment Tesing Thonje-mphete
Chitsulo chosapanga dzimbiri cha Al-6xn Tube Asme Sb 676 SIM SI08367 BUT
Mapaso opanda pake ndi Astm A312 tp316 tde316 tdedied paipi
Makampani kapena chifukwa cha ntchito iliyonse yomwe imadalira makina.
nsanje, zomanga, sime, nyumba yotumiza, pepala ndi zamkati,
Incluoy NCF 825 NE 16 NEF30DM20Dum Mapaipi owala ndi machubu osachenjera
Carbon Steel Flanger WN Flange RF R16.5 kalasi 300 Flange 600 Flange
Duptux Stevel & Mapepala & Coils

Duple Blts S31803 amagwiritsidwa ntchito kwambiri m'mafakitale angapo chifukwa champhamvu zowonjezera zomwe zidasamutsa kuchokera ku gawo la Austetic. Mosiyana ndi izi, chidutswa cha chiwopsezo chimayambitsa kulimba kwambiri chifukwa cha mayendedwe abwino. S31803 yopanda magetsi othamanga kwambiri amatha kukhala okonda kwambiri pochepetsa gawo lomaliza la mankhwala omaliza, potero kuchepetsa kunenepa kwambiri, ndikutsitsa mtengo wonsewo.

Duplex 2205 ali ndi kukana kwakukulu ku Kerosice ndi kukokoloka kwa kutukusa kuposa Sus316l Austetitic Yosatayika.

Ubwino wina wa bala wa grade 303 wosapanga dzimbiri pa kalasi 303 ndikuti ndizovuta kwambiri ndipo umatsutsana bwino. Chifukwa cha izi, khola lopanda dzimbiri limagwiritsidwa ntchito kwambiri popanga zoyaka ndi zokutira monga mtedza, ma balts, ma cys, ma clips, zokhala ndi ma curtings ndi ma cy. Zogulitsa zopangidwa ndi chitsulo cha kalasi 304 mu malonda ogulitsa mwachangu nthawi zambiri amatchedwa "A2".

Cholumikizira chopondera chimapangidwa ndi zitatu zolekanitsidwa komanso kudziyimira pawokha ngakhale zigawo zikuluzikulu; Makoma, ma gaskets, ndi oboola; omwe amasonkhana ndi zikopa zina, zoyenera. Zowongolera zapadera zimafunikira pakusankha ndikugwiritsa ntchito zonse zomwe zimakhala ndi cholumikizira, zomwe zili ndi zotayira zotayirira.
Alloy 800 ndi a nickeum-chromiam almoy mphamvu ndi mphamvu yayikulu komanso kukana kwa oxidation ndi kutupa kwambiri. ASTM B407 SINE N08800 infoloy 800 WR. 1.4876 Chitoliro chowala bwino chimagwiritsidwa ntchito kwambiri pomanga zida zofuna kukana kuchuluka, kukana kutentha, mphamvu, komanso kukhazikika pakuchita nawo ntchito mpaka 1500 ° C).
Chingwe chimakhala chokwera, milomo kapena rim, kunja kwa zakunja kapena mkati, zomwe zimathandiza kuwonjezera mphamvu (monga mtengo wamtambo kapena t-bat); Kuti mulumikizidwe mosavuta \ / kusamutsa kwa kulumikizana ndi chinthu china (monga chowala kumapeto kwa chitoliro, scal cylinder, etc., kapena pamunda wa mandala); kapena pokhazikitsa ndikuwongolera mayendedwe a makina kapena mbali zake (monga tambala mkati mwagalimoto kapena gudumu la tram, zomwe zimapangitsa mawilo kuti asamayendetse njanji). Mawu akuti "Flange" imagwiritsidwanso ntchito ngati chida chogwiritsidwa ntchito chopanga ma flanges.

ASTM A240 Mtundu 2205 Plate ndi duwa losapanga dzimbiri lomwe limagwiritsidwa ntchito kwambiri m'mafakitale, kufufuza kwamafuta ndi mafuta, ndi ukadaulo wamadzi, ndi ukadaulo wamadzi. Mapepala 2205 amapangidwa kuchokera ku kalasi ya SAGIS 2205, chitsulo chosapanga dzimbiri, chomwe chimaphatikizika ndi chitsulo champhamvu.

ASTM B705 Aloy 825 Wotchera Mapaipi a radie ndi mafuta a nyukiliya. Nthawi zambiri, mbewu za nyukiliya ndi zomera za racle ndi zojambulajambula zimatulutsa mphamvu zambiri zamagetsi.

Aunique la a Aunion 6Mo ES Mucho Free Fierdos Austetiticos akungula, Tambien se cucterizida Por Sursonadcia Al Factiidad.

Duptux Steel S31803 mtedza mtedza kwambiri ndizabwino kwambiri pazomwe zimayambitsa mipata yambiri, makamaka kuposa 900 digiri Celsius, wotsika kwambiri.

Pofuna kufafanizira mapaipi, ndikofunikira kuchotsa payipi yolunjika pa mapaipi. Mukamagwiritsa ntchito ma piipelines osiyanasiyana, mapaipi osiyanasiyana ayenera kugwiritsidwa ntchito. Pamene mapaipiwo amagwiritsidwa ntchito, chikopa chiyenera kugwiritsidwa ntchito kusintha kukula kwa mapaipi. Mukamacheza, chipika chanjira zitatu chowonekacho chimagwiritsidwa ntchito ngati cholumikizira cholumikizira, kuti chikhazikitse chipani cholumikizirana kapena kukula kwa nthawi yayitali komanso cholumikizira cholumikizira cha mapaipi. , Pakulumikizana ndi zida zosiyanasiyana, palinso zolumikizira ndi mapulagini a gawo la chida.

Alloy C-276 ali ndi kukana kwabwino kwambiri pakukhotakhota komanso kupsinjika kuwononga. Ilinso limodzi mwazinthu zochepa zomwe zimatha kupirira zowononga clorine, hypochlorite ndi chlorine dioxide.

Savoy Pipring Inc., ndi ISO 9001: 2015, Ped \ / / 317L lotakatamira molumikizana, 317l screet flange, 317l plate flange, 317l wnrf flange, blrf flange, swrf flange, 317l sorf flange etc.

Aloy 800 wedy wedy timakhala ndi mbiri yolimba mu malonda popanga mitundu yosiyanasiyana ya mitundu yosiyanasiyana ya makasitomala athu. Timakhala ngati infolisoy ma fronges omwe ndi odalirika komanso apamwamba kwambiri. Timagwiritsa ntchito ndalama zotsogola komanso makina apamwamba popanga assowm B564 SIMIL N08800 Stuliloy ma fronges 800.

Nickel Smows ndi zina mwazinthu zofunikira kwambiri pakupanga mapaipi apamwamba kwambiri ndi machubu ogwiritsa ntchito mafakitale. Malo awo obadwa nawo amawapangitsa kukhala othandiza pakugwiritsa ntchito osiyanasiyana. Ma Conloys a Nickel ndiwogonjetseka kwambiri ndipo amatha kugwiritsidwa ntchito m'malo otentha kwambiri.

Maphunziro osapanga dzimbiri 316 amawononga ndalama chifukwa cha kukana kwawo kovunda. Aloya apamwamba kwambiri awa amalimbikitsidwa makamaka kuti agwiritse ntchito pomwe alloy amadziwika ndi njira zosinthira ndi chlorides, kuphatikizapo madzi am'madzi.

316 Chitoliro chopanda maziko chimakhala ndi mbiri yabwino kwambiri yoponderezedwa m'malo ambiri. Zimapatsa ntchito yabwino m'mikhalidwe ya m'mlengalenga, kukana malo ambiri ndipo nthawi zambiri imagwiritsidwa ntchito m'madzi, kapena komwe kuwonongeka kwa mafakitale kuli kolemera.
Zovala zachitsulo zachitsulo
Zipangizo Zambiri
Chitsulo chachitsulo
Azerbaijani
Nickel 200 ma flanges
https: \ / \ / www.htpipe.com \ / consuelpipe
Kuimbira 36: Opanda K93600, W.NR 1.3912
Nickel Anoney othamanga
Incoloy 800h chitoliro chokhala ndi temple wambiri
Maphunziro a mipiringidzo kuti agwirizane ndi zofunikira zenizeni. Chitsulo
Zitsulo zachitsulo & ma sheets & coils

Nickel 200 Amalongosola Nickel 200 Malawi amakhala olimba, osasunthika, ndipo amaliza bwino. Kuphatikiza apo, Astm B564 SP52200 N02200 Zisoka zakhungu zimalimbana ndi kutengera ndale komanso zotsatsa, zimapangitsa kukhala bwino kugwiritsa ntchito zida zogwirizira.

ASMM A182 316TI chitoliro chimadziwika kuti chimayambitsa ntchito zapadera ndipo nthawi zambiri zimapangidwa kuti mukwaniritse zofuna zake. Timapereka mitundu yotakata ya Astm A182 316Ti kapangidwe ka kapangidwe kake ka ma netiweki yapadziko lonse lapansi.

Ictives 600 yozungulira ndi intoy-valkel-brad-cenel carburrization ndi kukana bwino kuwonongedwa kwakukulu. Zingwe zozungulira 600 zozungulira zimagwira ntchito kuyanika cl2 ndi mipweya ina yambiri yofananira ndi kutentha kwambiri. Alloy 600 bar ndi a chromial-cromiyal-cromiyal-cromiyal-chloride bwino oxidation ndi kukana ku chloride kuwonongeka kwa chloride kugwa, ukhondo wamadzi acid kumatentha.

Nthawi zambiri N08367 imatchedwanso Al6xn Al6xn ndi kaboni yotsika, yoyera kwambiri, nulytel-molybdenum yolimbana ndi crevice.

Izi zimathandizira kuthana ndi sulufuric acid. Ilinso ndi mawu apamwamba kwambiri, kuti apititsenso kukana kwake kuti athe kugwiritsa ntchito mankhwala ndi njira zomwe zimapangidwa ndi mitsinje yolimba ndi mpweya wosungunuka.

Zapamwamba zomwe zakonzedwa ku Flangesm A350 LF3 2 \ "akhungu 150

304 Nphwemba zopondapondazikulu zimapangidwa ndi chitsulo chosapanga dzimbiri, zinthu wamba komanso zodziwika bwino muzogwiritsidwa ntchito zambiri zamakampani zomwe zimafunikira kukana kuwonongeka ndi oxidation. Nyansiweli iyi ya S30400 imakonzedwa pogwiritsa ntchito makina apadera ndi njira, zomwe zikuwonetsetsa kuti ndi olondola komanso odalirika.
Alloy 800 weld weck
Zipangizo Zambiri
Chitsulo chachitsulo
Azerbaijani
Nickel 200 ma flanges
https: \ / \ / www.htpipe.com \ / consuelpipe
Itar 36 Nilo Anoy 36 W.NR 1.3912 K93600 ASTM F1684
Nickel Anoney othamanga
Incoloy 800h chitoliro chokhala ndi temple wambiri

Mapaipi 254 amatha kupirira kupsinjika kwa makina opanga masewera olimbitsa thupi komanso aloy 254 osuma amagwira ntchito yopanikizika kwambiri komanso malo okhala.

Timapereka mainjini osiyanasiyana a Inm 105

Kuchulukitsa kwa titanium ndi pafupifupi 60% yomwe ya chitsulo chosapanga dzimbiri ndi nickel polosys, kupulumutsa thupi kumeneku kumapangitsa kuti ikhale chisankho chodziwika bwino pakugwiritsa ntchito monga Arrospace.

A789 S31803 ndi S32205 ndi zitsulo ziwiri zosapanga dzimbiri zomwe zimagwiritsidwa ntchito kwambiri pantchito zosiyanasiyana. Mapaipi awa a duplex s31803 osakhala opanda chidwi amadziwika chifukwa chokana kwambiri kuwonongeka, mphamvu zazikulu, komanso kutopa kwambiri. A789 ndi lingaliro lomwe limakwirira osawoneka bwino komanso machubu opangidwa ndi chitsulo chosapanga dzimbiri.

Kugonjetsedwa kwa Prososion Fretelloy kumagwiritsidwa ntchito kwambiri ndi mafakitale a mankhwala. Kufunika koyenera kumabweretsa mwayi wovomerezeka ndi mphamvu zawo, thanzi komanso zachilengedwe, mafuta ndi mpweya, mafakitale a mankhwala osokoneza bongo.

Gulani mapaipi osapanga dzimbiri 254 osuta osuta ndi ma piche 254