ASTM A182 310S FLAGES

ASTM A240 Type 2205 Plate is a duplex stainless simbi simbi iyo inoshandiswa zvakanyanya mumaindasitiri emakemikari akadai sekuongorora kwemakemikari, kuongorora kwegasi, uye muinjiniya ekumaini. SA 240 GR 2205 pepa rinogadzirwa kubva kuGrade 2205 Simbi isina simbi, iyo iri musanganiswa wesimbi uye autenitic simbi.

Inconel 718 is a nickel-chromium-yakavakirwa-yakavakirwa mari inowanzo shandiswa mukunyorwa-tembiricha zvakakura senge erispace uye gasi turbines. Chimwe chezvinhu zvakakosha mukugadzirwa kweASTM B670 Inconel 718 Sheet ndiyo ndiro iri rolling maitiro. Kune marudzi maviri makuru emapurasiti 718 mahwendefa anowanikwa pamusika: kupisa kwakapetwa uye kutonhora zvakapetwa mahwendefa.

316L 1.4401 S31603 Stainless Steel pombi inzvimbo inoverengeka uye yekubhadhara pombi inowanzo shandiswa mune dzakasiyana siyana dzekushandisa maindasitiri uye dzekutengesa. Iyi SS uns s31603 pombi inogadzirwa kubva kune yakakwirira mhando 316l simbi simbi ine simba rakanakisa kuCorrosion, oxidation uye yakaita kuti ive yakakodzera nharaunda dzakaoma kana dzakanyanya kushushikana.

Inconel 625 Coil inoonekwa nekukanganisika kwaro kurwisa oxidation, yakakwira-tembiricha corroson uye kupera simba. ASTM B443 Uns n0662 incangen Plate inoshandiswa zvakanyanya muAerospace, maindasitiri emakemikari uye maaini uye kuoma uye kuomarara uye kusimba kunyange munzvimbo dzakanyanyisa.

Alloy 800 is a Nickel-simbi-Chromium Alloy ine simba rakanyanya uye rakanyanya kupokana ne oxidation uye corrosion pakupisa kwakanyanya. ASTM b407 uns n08800 incoloy 800 W. nr. 1.4876 Yakatemwa Pombi inoshandiswa zvakanyanya zvekuvakwa kwemidziyo inoda kuramba kupokana, kupisa kupesana, simba, uye kugadzikana kwebasa kusvika 1500 ° F (816 ° C).

Iyo 316 isina mbiya yesimbi yave iri chinhu chakakosha chekereke yeindasitiri. Uku kuwanda kwesimbi uye chrome kunozivikanwa nekukanganisika kwakakura kuonga, pamwe nekuimba kwaro. "

Kurumidza c2000 machubhu anoshandiswa mune yakawedzera huwandu hweshanduru yekusanganisira petrochemical kugadziriswa, makemikari ekugadzirisa michina kugadzira, mafuta enyeredzi uye zvidyarwa zvemafuta.

Kurumidza kuC2000 kunowanikwa mune dzakasiyana-siyana saizi uye gobvu, rudzi urwu rwechromini-molybdenum-molybdenum-molybdenum-molybdenum-molybdenum-molybdenum-molybdenum-molybdenum-molybdenum-molybdenum-molybdenum-molybdenum-molybdenum-molybdenum-molybdenum-molybdenum-molybdenum-molybdenum-molybdenum-molybdenum-molybdenum-molybdenum-molybdenum

Al6xn is SuperAdyaTic STOLLess STOL isina simba rekupokana ku chloride pomber, crevic corrosion uye kusagadzikana corrosion kupaza. Al6xn ndeye 6 moly Alloy iyo yakagadziriswa uye inoshandiswa munzvimbo dzinotyisa kwazvo. Iyo ine yakakwira nickel (24%), molybdenamu (6.3%), nitrogen uye zvirimo zvirimo zvinopa kupokana kushamisira, Al6xn inonyanya kushandiswa kune yayo yakavandudzwa pombi uye crevice corrosion kuramba mu chlorides. Iyo inzvimbo inoyevedza uye inotyisa isina simba.

Unt n08367 zvinowanzoitika seyakajairika al6xn is a lowl kabhoni, yekunyora "

Mapuro 254 mapepa anogona kutsungirira kushushikana kwakakwirira uye alloy 254 sm

Izvi zvinopa zvakanyatsosimbiswa kuramba kuSulfutic acid. Iyo ine zvakare yakakwira zvemukati, kuti uwedzere kupokana ne oxidizing makemikari uye maitiro ehova dzakasvibiswa neFerric ion uye yakanyungudika oksijeni.

Izvo zvinokwanisa kutsungirira huwandu hwakawanda hwekuita oxidizing uye zvisiri-oxidizing makemikari, uye zvinoratidzira kuramba kwakanyanya kudzikisira uye kurwiswa kwechikepe pamberi pehuku uye kumwe kudziya.

Iyo inoratidza kupokana kwakanaka kune vasina kwavakarerekera uye kuderedza nharaunda. Aya maitiro aya anogadzira iyo ine mhuru, yefirimu rinodzivirira risingabvumirwe, asi rinochengetedza oxidation kupokana nekunyanyisa kupisa.

Iyo inoshandiswa zvakanyanya muBegshore mafuta uye gasi kuongorora \ / / kugadzirwa uye mune yekushambadzira kuchinjanisa muPetrochemical \ /Memical kugadziriswa.

Titanium yeTitanium inenge 60% iyo yeStusless Simbi uye Nickel Alloys, uremu uhu hunoita kuti ive sarudzo yakakurumbira mukushandisa kwakadai sekusarongeka.

Inconel mazana matanhatu emasaini emasumbo extucum yetube of standard unt n06600 uye ASTM

Sch40 Monil 400 Pipe yakasarudzwa seWerkstoff Nhamba 2.4360 uye uns n04400. Alloy 400 pombi inozivikanwa seMameni Alloy 400 Pipe, Mhel 400 pombi & Nickel Alloy 400 pombi.

Mapepa ePepa reApple ane yepamusoro-yepamusoro-kubereka kugona uye simba pamusoro pemamwe mamakisi.

Yakakwira Chromium, Molybdenum uye nitrogen yezvinyorwa zvinopa mukudzikisira kwakaenzana nhamba (40, kupa zvakakwirira kudzikisira kugona kuAustenitic uye duplex stainly media, uye tembiriro rakadzora kupfuura 50¡¡¡.

Kurumidza Alloys Directory
Iyo Corrosion inodzivirira nekukurumidza Alloys inoshandiswa zvakanyanya nemaindasitiri emakemikari ekugadzirisa kwemakemikari. Kudikanwa kwekuita kwakavimbika kunotungamira mukugamuchirwa kwavo uye kukura munzvimbo dzesimba, hutano uye nemafuta uye gasi uye firmace fashformation maindasitiri.

Incoloy 800h Flange isu tine mukurumbira akasimba muindasitiri yekugadzira yakakwirira-mhando mafirita emhando dzakasiyana dzaigona kukodzera zvinodiwa nevatengi vedu. Isu tinogadzira incoloy 800 flanges iyo yakavimbika uye yakakwira mumhando. Isu tinoshandisa mari dzekutanga uye temberi yemachina ekugadzira ASTM B564 uns n08800 incoloy 800 flanges.

Alloy 800 Weld mitsipa inovhenekera isu tine mukurumbira wakasimba mune indasitiri yekugadzira yakakwira-mhando mafirita emhando dzakasiyana dzaigona kukodzera zvinodiwa nevatengi vedu. Isu tinogadzira incoloy 800 flanges iyo yakavimbika uye yakakwira mumhando. Isu tinoshandisa mari dzekutanga uye temberi yemachina ekugadzira ASTM B564 uns n08800 incoloy 800 flanges.

Nickel 200 inodonha iyo Nickel 200 malipi anokwenenzverwa, akaiswa pasi, uye iva nekupera kwakanaka. Zvakare, iyo ASTM B564 UNONS N02200 Flanges inopesana neCollan yekuita Corrosion mukurerekera uye exidiing nharaunda, kuita kuti vave vakakwana pakubata kwemidziyo yekubata.

Chimwe chinhu chakakosha cheN08800 incoloy Alloy 800 inotonhora yakamanikidzwa kupokana kuClongine ION kusawirirana neCorrosion inoenderana neCorros
Type ndiro, pepa, Strip Coil
Urefu 0 ~ 12m kana sekuda kwako zvinodiwa
Upamhi 0 ~ 2500mm kana sekuda kwako
Kuzeza 0,3 ~ 1200mm kana sekuda kwako zvinodiwa

Inconel 600 is a nickel-chromium-iron alloy ine zvakanakisa kupesana, oxidation kuramba uye simba rakakwirira pakupisa kwakakwirira. Nekuda kweiyo yakakwira kwazvo nickel zvemukati, inconel 600 inonyanya kupokana ne chloride ion inoshungurudza corrosion kupaza. Zera rakaomarara harina kudikanwa seisingabvumirwe 600 rakaomeswa uye rakasimbiswa nebasa rinotonhora chete. Iyo inconel 600 inogona kushanda mukupisa kunge yakaderera se700¡¡¡ (370¡¡¡).
Standard s, aisi, din
DIAMETER 5 ~ 500mm
Kureba ¨q12m kana sezvinoita zvevatengi zvinodiwa

Kutenderera mabara anotonhora kukweverwa uye kuwedzerwa, inowanikwa mumatanda marefu kana kucheka kusvika pakukura. Alloy matenderedza anopa simba uye kurwisa kwakasiyana munzvimbo dzakasiyana siyana uye kunogona kushandiswa mufurati, muchina chikamu chekugadzira, yebasa rekudya uye zvinyorwa zvekurapa.
Standard s, aisi, din
DIAMETER 5 ~ 500mm
Kureba ¨q12m kana sezvinoita zvevatengi zvinodiwa

Mabhizinesi mazhinji anofarira chokwadi icho chisingaonekwi mazana matanhatu esimba rakanyanya. Naizvozvo iyo alloy inoshandiswa mune akati wandei maindasitiri anoverengeka mumhando dzakasiyana siyana kusanganisira iyo yakakurumbira incavel 600 pombi. Kuvakwa kweiyi mapaipi kunogona kuve kwakashongedzwa kana kuti vaigona kusungwa. Pane zvakanakira kushandisa zvese zviri zviviri. For i.e. Kuzvisarudzira kwemapipi ane mazana matanhatu emuchadenga, ari mune zvekushandisa panoita kuti hupfumi hunobatsira kwazvo. Kunyangwe yakachipa kupfuura isina kuvakwa imwe, mapaipi aya ane seam Longitinal seam, iyo yaigona kuve ichikanganiswa nekudyidzana corrosion - kana ivo vasina kugadziriswa. Mune mamiriro ezvinhu, uko mutengi anoda fomu yepamusoro yekuparadzira kwecorosion uye kugona kutsungirira kumanikidzwa kwepamusoro, incroone 600 yemusungwa musungwa pombi ndiyo yakanyanya kunaka sarudzo.
Nyora seamless pombi
Seamless Tube
Yakatemwa Pombi
Welded Tube
Saw lSAw erw efw
Yakatemerwa Magumo, Kupera Kwemugumo "
Saizi OD: 1 \ / 2 "" ~ 48 ""
Bickness: Sch5 ~ Schxxs
"Kureba: sezvaunoda."
Kugadzira maitiro ekupisa kupisa \ / HOT basa, kutonhora kutenderera
Kugadzira Standard ASME B36.10 ASME B36.20

Zvemaindasitiri zvinangwa zveindasitiri, mumapipi masisitimu, isu tinowanzoda kuchinja kutapurirana; dzora kuyerera kwemvura (mafuta negesi, mvura, matope); Vhura kana kuvhurika mapepa emapipi, nezvimwe.

Nickel yakavakirwa 800 incoloy hexagonal pombi inozivikanwa kuti uve nekudzikisira kwakanaka kuora. Kunyanya kutaura, iyo incocoy 800 pombi inopa kudzikisira kwakaringana kurwisa carburization pamwe ne oxidation corrosion.

Carbon Steel Flange rudzi rwe rim yakaumbwa pakupera kwepombi kana ichinge yakatarwa pombi. Izvo zvinoshandiswa kusimbisa magumo emapepa, maropa kana zvimwe zvinobatana. Iyo ine yakakwirira isina kusimba simba uye inowanikwa ne convex nzvimbo uye inotsigira kune nyore kuisirwa. Iyo inzvimbo yebaron-carbon alloy ine kusvika ku2,1 wt.% Kabhoni. Carbon Simbi haina madiki madiki madiki ezvimwe zvinhu zvekunyepedzera, asi zvinowanzove neManganese.

Uns S.2205 Duplex Steel Asme Steel Steel yakakodzera kumvura yegungwa uye zvigadziko zvemarudzi nekuti nzvimbo dzadzo dzakatsiga dzinogona kutsungirira temberi kusvika mazana matanhatu.

Kurumidza C-276 ndeye A NIM mo cr superloy yakawedzerwa neTungsten, iyo ine yakanakisa kurwisa kwakasiyana munzvimbo dzakasiyana siyana dzenzvimbo dzakaipisisa. Zvinyorwa zvakakwirira zveNi uye mo zvinoita kuti nileel alloy ichinyanya kupokana nekugadzirisa uye crevicer corrosion mukuderedza mamiriro ezvinhu, nepo cr anochinja mashandiro eanti-oxidation svikiro.

Kunyangwe molybdenum chinhu chakanaka, kushandiswa kwakanyanya kweinogona kuderedza iyo creep ductility ye gr f11 plate flanges. Graphifization uye kuora kwetambo yesimbi kunogona kuitika kana tembiricha inodarika mazana mashanu degrees celsius. Chromium yakawedzerwa sa182 F11 F11 Alloy Steel cl.2 Yakagadzirirwa Pipe Pipe Flanges kudzivirira kuderedza kuderedza kuderedza uye graphifization. Uye zvakare, iyo Chromomium yakawedzera inopawo oxidation kuramba.

Duplex Steel Flanges inoshandiswa zvakanyanya mune yakashandiswa engineering, michina uye maindasitiri emotokari. Duplex Steel S31803 LAPL FLAGES yakanakira kuti application inoda kuti iri nani kupokana kupfuura mhando 316 uye yakanaka tembiricha yakakwira tembiricha. Tine Duplex Steel S31803 \ / s32205 flanges muhomwe. Duplex Simbi Flanges inowanzoshandiswa mune yemakemikari, petrochemical, uye maindasitiri emagetsi.

Nickel 200 mhinduro yakasimba yakasimbisa simbi. Nickel 200 Bar Stock ine 99.6% yakaratidza nickel nehuremu uye inoonekwa seyakachenesa yakachena nickel. Din 2.4066 bar ine yakanaka michina uye yemuviri zvivakwa. Semuenzaniso, ASTM B160 N022200 ine yakanakisa kuramba kune akawanda anokanganisa makomisheni pamwe nenharaunda dzakashata. Zvichakadaro, nickel 200 mhinduro yakasimba inosimbiswa yakagadzirwa nehasha iyo inogona kugadzirwa semabhawa akatenderedza uye matanda. Izvi zviviri zvikamu zvinoshandiswa zvinoshandurwa uye zvinogona kusiyaniswa kubva kune mamwe mabasa akakosha.

Nickel-Conver-based Alloy 400 Mazoni 2.4360 Cold Dy Dhizaina Immuney Immuney Hurlis-Corros Interness yekunetseka painenge ichisimbisa midhiya mune yakajairana nenhamba. Monil 400 is a copper uye nickel yakavakirwa alloy iyo inozivikanwa nhasi nekuda kwekuita kwayo kwakanyanya. Iyo Alloy ine yakanaka acid uye alkali kuramba. Mukuwedzera, ine simba rakanaka rakafanana, ductility, dhiziri rakanaka, uye rinogona kuomeswa nebasa rinotonhora. Pamusoro pezvo, inogona kushandiswa mune zvekushandisa nekupisa kubva kuIns kusvika ku533 degrees Celsius.

Nickel Alloy 400 uye Monil 400, inozivikanwawo seMunyuti N04400, iri DUCTICE ANICEL-BEPHER AllEY INYKEL NYKEL uye yechitatu-yechitatu yengozi. Nickel Alloy 400 inozivikanwa nekudzivirira kwayo kune akasiyana mamiriro ezvinhu akaora, kusanganisira Alkalis (kana acids), mvura yemunyu, hydrofluor acid, uye sulfuric acid. Sezvo Monil 400 kana Alloy 400 isimbi inotonhora yakashanda, uyu mutero ane kuomarara kwakanyanya, kuomarara nesimba. Nekutonhora

Inconel 6 00 ROPT Bar ndeye Nickel-yakavakirwa Alloy ine benign carburization uye yakanakisa corroson kuramba pane yakanyanya kupisa tembiricha. Inconel 600 matende ezvipfuyo zvinoshanda kupesana nekuomesa cl2 uye mamwe mamwe matsime akasiyana pakupisa uye kwakanyanya kupisa. Alloy 600 bar is a nickel-chromium acloy ine zvakanaka oxidation kupokana uye kuramba kuChroride yekudzvinyirira yekushambadzira, yakanyanya kuchena kwemvura corroson uye acid oxidation pakudziya kwakasimudzwa.

Nilo \ / Alloy K W.nr .: 1.3981
Unt: k94610 astm f15
Yakagadziriswa-Kuwedzera Girazi-Yakacheneswa Iron-Nickel-Cobalt Alloys, gadzira mutsara wekuwedzera anowedzera kufanana neiyo yegirazi rakaoma mukati meimwe tembiricha yekupisa
Kwekusimbisa kusimbisa girazi rine hard girazi

Nilo Alloy 36, WMR 1.3912, Invar 36® is a nickel-iron
Invar 36 Dziviso: Uns k93600, W.nr 1.3912

Zvakajairika Kutengeserana Mazita: Nickel Alloy 36, Invar 36®, Nilo 6®, Pernifer 6®
Invar 36® is the nickel-iron, yakaderera yekuwedzera maitiro ayo ine 36% Nickel, Invar
Invha 36 Tube OD: 0.2-6mm, WT: 0.02-2mm

Flange ndiyo zvikamu zvekuti pombi mbiri inopera, flange yekubatanidza inotsanangurwa neiyo flange, gasket uye bhayeti matatu yakabatana seboka rakabatanidzwa kuumbwa kwekubatanidza. Iyo gasket inowedzerwa pakati pezviviri zvekupenya uye ikazosungirirwa nemabhomba. Kumanikidza kwakasiyana kudzvanywa, ukobvu kwakasiyana, uye blumps dzinosiyana nezvipfuyo zvakanyorwa, zvakadai sekureva kwenyika Pombi, haina kugadzirwa kuti ifonze pombi yemvura seyakayerera mhando nhengo, asi hama diki, inogona kunzi seyakawedzera mhando zvikamu.

Mafirita anogadzirwa kubva pa330s stainless simbi, iyo iri kupisa-inopesana neAustenitic stainless simbi alloy. 310S Stainless Steel Flange ine huwandu hwakanyanya hwe chromium (24- 26%) neNickel (19-22%) Kupa Superior Rishance uye yakakwirira-tembiricha simba.

Iyo SS Uns S31000 Flangs inoshandiswa kuvhara kubatana. Aya maFlanges anogona zvakare kuuya mune akasiyana marudzi emhando senge akasimudzwa kumeso, kumeso kumeso uye mhete yerudzi rwiyo rwekubatanidza. Ndokumbira kuti ubate isu kuti uwane rumwe ruzivo pane maruva uye mitengo yavo mu330 renji.

Zvese zvatinosvika pamabhuku edu 310 310S STATLUPLE STEEL FLANIES TINOGONESA KUTI VAVANZE KUTI VAVANZE KUTI VATSVIRE MABHUKU, KUSHANDISA KWENYU ZVESE NEZVINHU ZVINOGONESESA ZVINHU ZVINOGONESESA ZVINHU ZVINOGONA.

Isu tinofunga kupa zvakafanana kwavari mumashoko akasiyana, zviyero, zviyero, zviyero, zvakadzvinyirira, makirasi. Iyo zvakare yakagadzirwa uye inopiwa kune vatengi kuetsika-yakatemwa uye yakaitwa yakatarwa kuti chero sarudzo dzinokosha dzinogona kugutsikana kwazvo.

Yedu Unt S31008 SS Weld mitsipa maLages ari ega anoshanda kune zvidyarwa zvidyarwa. Yedu ss 310 Mahara 18-8 Austenitic Stainless Simbi Flanges, neChromium-nickel musanganiswa nekupisa kupokana uye oxidation inodzivirira.

Isu tiri kupa iyi unt s30900 \ / s31000 \ / s31008 flanges mumhando dzakasiyana siyana. Zvakafanana nemhete dzerudzi rwechirungu

Iyo fetiraiza uye makemikari ekugadzirisa maindasitiri anoshandisa 310 310s stainless simbi flanges yeunyoro cyclic mashandiro emuviri. Zvivakwa, chizvarwa chemagetsi uye maindasitiri ekugadzirisa masango anoshanda zvakanyanya kupisa kwakanyanya, nokudaro achida marunda akaoma pakupisa kwakadaro.

SS 310 ndiye Austenitic SS zvinhu. Yakagadzirirwa kushandiswa pakusimudzira tembiricha uye zvinangwa zvekudzivirira. Iyo pasi peiyo nyanza cyclic mamiriro ari kuramba oxidation kusvika 1100 deg c.

Shanduro yepamusoro yeCarbon, SS Uns S13009 mapofu mapofu mapofu mune zviitiko zvakadaro, ivo vanopesana nekabhekota carbide zvakare.

Nekuda kwekurera kwechromium yezvinyorwa uye avhareji Nickel, inova shufidation inodzivirira. Iyo inoshandiswa pakukwikwidza, inogunun'una yekudyara, oxidizing, uye zvikumbiro zvekushandisa.

Isu tinopa huwandu hwakawanda hwesimbi asstm a182 310 malipi 310s 80h mapofu mapofu , SS 310S Mhete Type Joint Flanges (RTJ) etc.

Kana ikapihwa kupisa kupisa, inova yakaiswa pasi peiyo sigma chikamu. Ss 310s a akaderera carbon zvemukati Alloy anoshandiswa nekuda kwekurara kwayo kwekurara.

ASTM a182 ss 310s socket weld flages zviri nyore kwazvo uye yakagadzirwa, mhando yayo yayo yainyegarwa nhaka yekabhoni yayo yakaderera.

Simbi isingagumi 310 inoumbwa yakagadzirwa nesimbi yesimbi isina giredhi ine huwandu hwakanyanya hweNickel ne chromium. Icho chrromium nickel axloy ine 24% chromium uye 19% nickel mune yekuumbwa.

310s uye 310h zvichienderana neCarbon Zvemukati, anoshandiswa mune yakanyanya tembiricha yekushambadzira neakakwirira corrosments nzvimbo nekuda kwekushivirira kwakanyanya uye yakakwira oxidation corrosion kuramba.

Iyo 310 310s Stainless Steel Flange ine 1402 degrees Celsiusy inonyungudutsa pfungwa inovatendera kuti vashande tembiricha yakanyanya.

Iyo SS 310 Flange pamwe nedzimwe nzira dzegiredhi mune ino giredhi bata simba rakafanana kune iyo yeiyo 304 uye 316 mamakisi emapendi. Simba rakaderera reill is 205mpa uye hushoma hushoma simba rezvinyorwa 310 ndere 515pa.

Izvo zvinyorwa zvine zvishoma zvakadzika zvakadzika pane makumi matatu nemakumi matatu uye ane elongation yakanaka ye40%.

Iyo A182 F310 FLAND inorehwa kuti iumbwe kana yakaomeswa maruva ayo ane tambo pamusoro pavo kuti ive yakabatanidzwa kune mapipi ane mapipi ane tambo dzechirume. Iyo yakarukwa mapepa anobatsira kana iyo nzira yekubatanidza kana kusvetuka zvisingaite.

Iyo ASME sa182 SS 310 PIPE Litnes inogona kuuya mune ASTM a182 kana A240 zvirevo uye Ansi, ASME, BS, din uye en, Iyo madimikira kubva pa1 \ / 2 inches kusvika pamakumi mana nemasendimita asi pane zviyero zvakasiyana nekuda kwehunhu hwakakosha hwechinangwa flonges uye zviyero zvavo zvakare.

Iyo SS din 1.4841 Flanges Flanges inogona kuuya mumakirasi ekudzvinyirira akasiyana ePN6 kuburikidza nePN64 uye 150 kusvika 250 kuburikidza 2500 kudzvinyirira ratings. Kune akasiyana marudzi akadai sekutsvedza pane flanges, weld mutsipa flanges, socket weld flanges uye mapofu emapofu. Imwe neimwe yadzo inoshandiswa kune chimwe chinodiwa.

Iyo inowedzera yekuwedzera inoenderana neStanless Simbi Flange yakafanana neiyo yendarira, 1.5 times iyo yeyakajairika simbi pombi. Nekudaro, kana zvichienzaniswa nendarira, simbi isina tsvina yakarongedzwa pombi ine hunhu hwekuwedzera kwekuwedzera uye kutonhora contraction.