Intangiriro - Impamvu Gusobanukirwa Igiciro cya Ball Valve ari ingenzi kurusha uko ubitekereza
Amavali y'imipira ari hose - kuva ku miyoboro y'amazi yo mu ngo kugeza ku byuma bicukura peteroli byo mu mazi. Nyamara iyo abashinzwe amasoko, injeniyeri, cyangwa abayobozi b'ibigo batangiye gusaba ibiciro, ikibazo kimwe kiba ari cyo gikunze kuba: *Ni iki kigena igiciro cy'amavali y'imipira?*
Igisubizo nticyoroshye. Valve y'icyuma kidapfa gushonga ya santimetero 2 ishobora kugura $30 ku mucuruzi umwe na $300 ku wundi. Badasobanukiwe imiterere y'ibiciro, abaguzi bashobora kwishyura amafaranga menshi ku bintu bitari ngombwa - cyangwa se ikiruta ibyo, kugura valve zihendutse cyane zinanirwa iyo umuntu asunitswe n'umuvuduko.
Iyi mfashanyigisho irenze ibyo bisanzwe "Urutonde rw'ibiciro"Uzamenya neza uburyo igiciro cy'umugozi w'umupira w'amaguru yubakwa, uburyo gitandukana mu bihugu bikomeye bitunganya, impamvu igiciro kidakwiye kurebwa ukwacyo.igipimo cy'umupira w'amaguru, n'uburyo bwo guhitamo igikoresho cyizeweUmukozi wa Valve y'umupira– harimo n'irushanwaValve y'umupira w'Abashinwaabatanga ibicuruzwa - bitabangamiye ubuziranenge cyangwa umutekano.
Gusesengura igiciro cy'umugozi w'umupira - Icyo uri kwishyura by'ukuri
Ibiciro byose bigaragaza uruvange rw'ibikoresho fatizo, uburyo ibintu bikorerwamo, ikiguzi cyo kwemeza, n'ibijyanye n'uruhererekane rw'ibicuruzwa. Gusobanukirwa ibi bice bigufasha kuganira neza no kwirinda ubukungu bw'ikinyoma.
Ibiciro by'ibikoresho - Ishingiro ry'igiciro cya Ball Valve
- Ibikoresho by'umubiri:Ibyuma bikozwe mu cyuma gishongeshejwe, umuringa, icyuma cya karuboni (WCB, LCB), icyuma kitagira umushongi (CF8, CF8M, 316L), n'ibindi byuma bidasanzwe (Hastelloy, Monel, Inconel). Ibyuma bitagira umushongi ubusanzwe byongera 40–70% ku giciro fatizo ugereranije n'icyuma cya karuboni.
- Umupira n'igishishwa:Icyuma kidasembuye neza cyangwa umuringa upfundikiye. Ubukana bwinshi no kudakira ingese byongera ibiciro.
- Ibimenyetso n'intebe:PTFE (Teflon) ni isanzwe; PTFE, PEEK, cyangwa Devlon ikoreshwa mu gufunga ibintu bishyushye cyane cyangwa bitera ubushyuhe bwinshi bishobora kwikuba kabiri ikiguzi cyo gufunga.
*Urugero:* Valve y'icyuma cya karuboni ifite intebe za PTFE ishobora kugira ikiguzi cy'ibikoresho byayo kingana na ~$15, mu gihe ingano imwe muri 316 ibyuma bita fluorescent ishobora kurenza $45 - ivuye mu bikoresho fatizo gusa.
Uburyo bwo gukora no gutunganya ibintu neza
- Gutera cyangwa gucura:Vali z'umupira zikozwe mu buryo bwa "cultural ball valves" zitanga imbaraga n'ubucucike bwinshi ariko zikenera ingufu nyinshi n'uburyo bwo kuzitunganya, bityo igiciro cya vali z'umupira kikazamukaho 20-30% ugereranyije n'ibyuma bingana nabyo.
- Ubushobozi bwo kwihanganira imashini:Valve zujuje **ibipimo ngenderwaho bya valve y'umupira** nka API 6D cyangwa ISO 17292 zisaba ko habaho icyuho gito (akenshi ≤0.05mm), ibyo bikaba byongera igihe cya CNC n'igiciro cyo kugenzura.
- Kurangiza ubuso:Udupira two kurwanya ingese (urugero: gutwikira nikeli nta amashanyarazi ku mupira) twongeraho $2–8 kuri buri gipimo mu gukora imashini.
Ingano, Igipimo cy'Umuvuduko, n'Imiyoboro y'Impera
- Ingano (NPS ½” kugeza 24”+): Igiciro gipima mu buryo butagororotse. Valve y'umupira ya santimetero 6 ishobora kugura inshuro 8-10 ugereranyije na valve ya santimetero 1 bitewe n'ingano y'ibikoresho n'uburyo bwo gucukura.
- Icyiciro cy'umuvuduko (PN16, PN40, Icyiciro cya 150, Icyiciro cya 600, Icyiciro cya 1500): Umuvuduko mwinshi usaba inkuta nini, imigozi iremereye, n'uduti turerire tw'imigozi - bikongera kabiri igiciro fatizo kuri buri ntambwe.
- Ubwoko bw'impera: Impera z'imigozi (NPT / BSP) zirahendutse; socket welding yongera ~ 10%; impera z'imigozi zongera 30-50% bitewe n'ibikorwa byo gucukura no gucukura byiyongereye.
Ibindi Bikoresho n'Impamyabumenyi
- Igishushanyo mbonera kidakoresha umuriro (API 607/ ISO 10497): Isaba ko habaho imashini zipima ubushyuhe bwa grafiti n'ibizamini byihariye - yongera 15–25% ku giciro cya valve y'umupira.
- Igikoresho kidahindagurika, umugozi udapfa gupfuka, umugozi ufunga: +5–12% byose hamwe.
- Icyemezo cya NACE MR0175 (serivisi idasobanutse): Isuzuma rikomeye ry'ibikoresho n'inyandiko zisabwa - amafaranga adahinduka kuri buri cyiciro.
Gusobanukirwa ibi bice bigufasha gusubiza: “Kuki ibiuruganda rukora valve y'umupira"Icyitonderwa kiri hejuru ya 30% kurusha ikindi?"– akenshi kubera ko birimo amahame ngenderwaho ukeneye koko.
Itandukaniro ry'ibiciro bya Ball Valve mu bihugu bitandukanye - Igenzura ry'ukuri ku isi
Ibyuma by'umupira bicuruzwa ku isi yose, ariko ibiciro biratandukana cyane bitewe n'aho bikorerwa, aho byakorewe, n'aho bigurishirizwa. Hasi aha hari isesengura ry'ukuri - ntabwo ari ibitekerezo by'abantu - hashingiwe ku makuru y'isoko ryo mu 2024-2025.
Leta Zunze Ubumwe za Amerika - Igiciro cy'Indashyikirwa, Icyemezo cy'Indashyikirwa
- Ingano isanzwe (icyuma kitagira umugese cya santimetero 2, umupira wo mu bwoko bwa 150 ufite flange, urekuye): $150 – $350
- Abashoferi: Igiciro cy'abakozi kiri hejuru ($50–80/isaha ku bakora imashini), amategeko akaze agenga inshingano, icyemezo gihenze cya ASME/U, n'umurage w'ikirango.
- Ibyiza kuri: Peteroli na gaze, ibinyabutabire bya kirimbuzi, ibikorwa bya gisirikare aho gukurikirana no gushyigikira byihuse mu gace ari ngombwa.
Ubudage n'Uburayi bw'Iburengerazuba - Ubuhanga bugezweho
- Ingano y'igiciro: €130 – €280 (bingana na $140–$305) ku giciro kimwe
- Ibintu by'ingenzi: Ishoramari rikomeye mu gukora ibikoresho byikora (bituma abakozi badakoresha imbaraga nyinshi), kubahiriza amahame ya DIN/EN, no kugira isuku y'ibikoresho.
- Icyitonderwa: Abanyaburayi benshiuruganda rukora valve y'umupiraKwibanda ku masoko yihariye - akoresha umwuka mwinshi kandi akoresha imbaraga nyinshi - bituma ibiciro birushaho kwiyongera.
Ubuhinde - Umurimo muke, Ireme ritajyanye n'igihe
- Ibiciro: $40 – $90 (ibyuma bitagira umuhengeri 2”)
- Akamaro: Umushahara muto cyane ku isaha ($3–6), ibikorwa remezo byiza by'ubusitani.
- Ingaruka: Ihindagurika ry'ubwiza bwinshi. Valve nyinshi zo mu Buhinde zirahuraigipimo cy'umupira w'amaguruku mpapuro gusa; ibikoresho by'intebe n'ubugari bw'urukuta bikunze kugabanuka. Abaguzi b'abahanga basaba igenzura ry'abandi.
Ubushinwa - Agace gakomeye cyane k'ibiciro by'imipira
- Ibiciro bihagaze (kuva kuriValve y'umupira w'Abashinwauruganda): $25 – $70 kuri vali imwe y'icyuma kidapfa gushonga ya santimetero 2.
- Kuki ari hasi cyane?
– Uruhererekane rw’ibicuruzwa ruhujwe: Gucukura, gucura, gukora imashini, gufunga PTFE, umukingo – byose biri muri kilometero 50 muri Wenzhou cyangwa Nan'an.
– Ingano nini: Uruganda rumwe rushobora gukora valve 50.000 ku kwezi, bigatanga ikiguzi gihoraho.
– Abakozi baciriritse ariko bazamuka ($5–9 ku isaha) kandi bakoresha ibikoresho mu buryo buhanitse cyane.
Ariko,Valve y'umupira w'Abashinwasi urwego rumwe rw'ubuziranenge. Inganda zo mu Bushinwa zo ku rwego rwo hejuru (akenshi zihabwa icyemezo cya ISO 9001 + API 6D) zikora valves zitsinda ibizamini bya NACE, ariko ibiciro byazo biri hafi y'amadolari 70–100 – 40% munsi y'ibipimo by'Uburengerazuba.
> Urugero nyarwo:Valve y'icyuma kitagira umugese ifite uburebure bwa santimetero 316 (Class 600) ikomoka ku kirango cyemewe cyo muri Amerika: $1,200. Kimwe n'iy'umushinwa wo ku rwego rwo hejuruuruganda rukora valve y'umupira: $480, harimo API 6D n'inyandiko zirinda inkongi.
Ibiciro byihishe - Imisoro, Umuzigo, na Incoterms
Igiciro gito cya "valve" cya "ex-works" kiva mu Bushinwa cyangwa mu Buhinde gishobora kurangira nyuma yo kongeramo:
- Imitwaro yo mu mazi (igipimo cya nyuma ya COVID: $1,500–3,000 kuri buri konteneri ifite uburebure bwa metero 20)
- Umusoro ku bicuruzwa byinjira mu gihugu (urugero, imisoro ya Amerika ku gice cya 301 ku mashini zitwara imizigo zo mu Bushinwa: 25%)
- Amafaranga y'ikigo cy'ubugenzuzi (SGS, BV: $300–1.000 kuri buri komande)
Buri gihe banza ubare ikiguzi cyo ku butaka hanyuma ugereranye n'amahitamo yo mu gihugu cyangwa hafi y'inkombe.
Akamaro k'igiciro cya Ball Valve - Si umubare gusa
Abashinzwe amasoko bibanda gusa ku bintu bike cyaneigiciro cya valve y'umupiraakenshi bishyura inshuro eshatu z'igihe cyose cy'ingufu. Dore impamvu igiciro gifite uburemere bufatika.
Igiciro nk'ishingiro ry'umutekano n'ubwiringiro
Valve y'umupira ya $20 ya santimetero 20 iturutse ku mucuruzi utazwi ishobora gukoresha ibyuma byasubiwemo, ibiti bito, na PTFE idakurikiza amategeko (ishonga kuri 150°C aho gushonga kuri 260°C). Mu ruganda rukora peteroli, ifunga ry'imvange rimwe rishobora gutwara $500.000 mu gihe cyo kudakora, gusukura no gukomereka. Valve yemewe "ihenze" isa n'aho ihendutse.
Igiciro cyose cy'umutungo (TCO) ugereranije n'igiciro cyo kugura
TCO = Igiciro cyo kugura + Gushyiramo + Gusana + Ikiguzi cyo kudakora + Ingufu zitaboneka (zivuye mu gusohoka) + Guta ikoreshwa.
Yakozwe nezauruganda rukora valve y'umupiraIgicuruzwa cyacyo gishobora kuba gifite igiciro cyo kugura cya $120 ugereranyije na $60 ku giciro gito. Ariko niba valve ya $60 iva nyuma y'imyaka 2 (isaba $200 mu gihe cyo gukora no gufunga ibikorwa), valve nziza imara imyaka 15 idavamo iratsinda.
Amahame agenga ibiciro ashyirwa mu bikorwa – kandi ni byiza
Uburyo bwo gupima umupira bukoreshwa mu buryo busanzwenka API 6D, BS 5351, cyangwa amabwiriza ya ISO 14313 yerekeye ubunini bw'inkuta, ibizamini bya torque, n'umuvuduko w'amazi mu ntebe. Valve ivuga ko yujuje ibi bipimo ntishobora gukorwa ku madolari 25 - ibikoresho fatizo n'imashini byonyine birahenda cyane. Niba ubonye igiciro cya valve y'umupira "yemejwe na API 6D" kiri hasi cyane, nta gushidikanya ko ari impimbano.
Bityo, gusobanukirwa igiciro bigufasha kwemeza ukuri: saba ibyemezo by'ibizamini na raporo z'ibizamini by'ibikoresho bishobora gukurikizwa (MTR). Abatanga serivisi z'ibizamini bemewe bazabitanga.
Uburyo bwo guhitamo igiciro gikwiye cya valve y'umupira w'amaguru kuri porogaramu yawe
Ubu uzi ibice n'impinduka z'ibihugu. Dore uburyo bwo guhitamo igiciro cya **umupira w'amaguru** gitanga agaciro nyako - atari ukwicuza.
Intambwe ya 1 - Mbere na mbere banza usobanure uburyo bwo gukoresha umupira w'amaguru (ball valve)
Mbere yo kuvuga ku giciro, hitamo **igipimo ngenderwaho cy'ingufu z'umupira** gikurikizwa mu nganda zawe:
- Inganda rusange:ISO 17292 / ASME B16.34
- Umuyoboro w'amazi (peteroli na gaze):API 6D / ISO 14313
- Amazi/umwuka ufite umuvuduko muke:Amahame ngenderwaho y'uruganda (ahendutse, ariko genzura witonze)
- Irinda inkongi y'umuriro:API 607 / ISO 10497
Andika igitabo gisanzwe cyihariye hamwe n'ibindi bisabwa (NACE, ATEX, SIL). Ibi bihita bishungura abatanga serivisi badashobora kubahiriza ibyo bisabwa.
Intambwe ya 2 - Saba ibiciro by'ibiciro bivuye ku bakora valve 3–4 z'umupira
Hitamo uruvange: ikirango kimwe cyo mu gace k’iwanyu (urugero, ValvTechnologies), ikindi cy’urwego rwo hagati ku isi (urugero, KITZ), n’ibindi bibiriValve y'umupira w'Abashinwaabatanga serivisi bagaragaza neza amahame yabo. Saba:
- Icyemezo cy'ibikoresho by'umubiri, umupira, igiti, intebe
- Raporo y'ingano (ubugari bw'urukuta hakurikijwe ibipimo)
- Raporo y'ikizamini cy'umuvuduko (ikizamini cy'igikonoshwa n'icyicaro)
- Niba ari ikintu kidapfa umuriro: kopi y'ikizamini cy'umwimerere cyavuye muri laboratwari yemewe
Gereranya ibi ku ruhande rumwe. Igihendutse kidafite inyandiko kigomba kwirengagizwa, hatitawe kuigiciro cya valve y'umupira.
Intambwe ya 3 - Suzuma Ikiguzi cyose cyakoreshejwe mu kuzana ibicuruzwa n'igihe cyo kubikumira
Ku baguzi bo mu mahanga, harimoValve y'umupira w'Abashinwaibicuruzwa byinjizwa mu mahanga:
- Icyitonderwa: FOB Shanghai cyangwa Ningbo (ubusanzwe). Ongeraho ibicuruzwa byo mu mazi (~ $400 kuri CBM?), imisoro ya gasutamo, n'ibitangwa mu gace utuyemo.
- Igihe cyo gutangira: Inganda zo mu Bushinwa akenshi zikora iminsi 25-40 + iminsi 30-45 zoherezwa muri Amerika/Uburayi.
Hari igihe igiciro cyo mu gace kiri hejuru gato gishobora kwemezwa no gutanga ibicuruzwa mu byumweru 2 ugereranyije n'amezi 3.
Intambwe ya 4 - Baza ibijyanye no kugenzura ubuziranenge no gukurikirana
Umuntu wizeweuruganda rukora valve y'umupiraizakora:
- Kuba ufite icyemezo cya ISO 9001:2015 (atari "kiri mu nzira gusa")
- Kora isuzuma rya hydrostatic 100% mbere yo kohereza
- Tanga uburyo bwo gukurikirana ibipimo by'ibice - nimero ya buri vali ijyanye n'ibyemezo by'ibikoresho fatizo
Niba badashobora kubikora, uko byagenda koseigiciro cya valve y'umupira, genda.
Intambwe ya 5 - Koresha Itegeko ry'"Igiciro kuri Buri Mutekano"
Ku bintu by'ingenzi (gaze ishobora gushya, umwuka ushyushye cyane, imiti ihumanya), ntugakoreshe neza ku giciro gito cyane. Ahubwo, shyiraho niburaigipimo cy'umupira w'amaguru(urugero, API 6D + irinda umuriro) hanyuma ushake umucuruzi uhanganye kurusha abandi mu babishoboye koko.
Ku miyoboro y'amazi cyangwa umwuka idakomeye ku bushyuhe/umuvuduko muto, ushobora guhitamo ihendutse mu mutekanoVal y'umupira w'Abashinwabyujuje ibisabwa na ISO 17292 by’ibanze, ariko biracyasaba isuzuma ry’icyitegererezo ritunguranye.
Uruhare rw'Uruganda rw'Amavalufu y'Umupira mu Kugena Ibiciro
Uwo uguzeho ni ingenzi kimwe n'igiciro. Uburyo bw'ubucuruzi bw'uruganda rwa **ball valve** bugira ingaruka ku giciro cya nyuma.
Ubwoko bw'abakora ibicuruzwa n'imiterere y'ibiciro byabo
- Abakora ikirango cyo ku rwego rwa mbere (Crane, Flowserve, Emerson):Igiciro cyo hejuru cyane (akenshi urwego rw'ibicuruzwa 3–5×). Harimo ubushakashatsi n'iterambere byagutse, umuyoboro w'ubufasha ku isi, n'ubwishingizi bw'inshingano.
- Inganda zemewe n'amategeko zo mu karere (urugero, nyinshi mu Butaliyani, Koreya y'Epfo):Igiciro kiri hagati, ubwiza bwiza, igihe gito cyo kubona ibicuruzwa ku masoko yo hafi.
- Mu rwego runini Inganda z’abazunguza imipira zo mu Bushinwa (urugero, Neway, Xinfa, BM Engineering – ariko NTABWO ari amasosiyete y’ubucuruzi):Igiciro gito kugeza hagati, gishobora kuba cyiza cyane niba ubivuzeigipimo cy'umupira w'amagurukandi ukishyura igenzura ry’umuntu wa gatatu.
- Amasosiyete mato y’ubucuruzi yiyita abakora ibicuruzwa:Igiciro cy’ingenzi, nta kugenzura ubuziranenge, nta musaruro nyakuri uboneka. Ni bibi ku kintu icyo ari cyo cyose kirenze imiyoboro y’amazi yo kwikorera.
Uburyo bwo kwemeza uwakoze
- Saba guhamagara videwo igenzura ry'uruganda (imbonankubone, ntabwo yafashwe amajwi)
- Saba abandi baguzi bo mu nganda zawe inyandiko zigaragaza ibyo ushaka
- Reba niba bafite monogram ya API (kuri valve za API 6D) - ibi birahenze kandi bihabwa gusa amaduka akomeye
Umuhanzi nyaweuruganda rukora valve y'umupiraNtabwo bizigera biba bihendutse cyane kuko bitwara ikiguzi nyacyo cyo gukoresha imashini, imashini, n'igerageza.
Ibibazo Bikunze Kubazwa Ku Giciro cy'Umupira w'Amasasu
Q1: Kuki valve z'umupira zifite ingano imwe n'ibikoresho bimwe zifite ibiciro bitandukanye cyane?
A:Itandukaniro muriigipimo cy'umupira w'amaguru(API ugereranyije n’ibitari bisanzwe), icyiciro cy’umuvuduko (Icyiciro cya 150 ugereranyije na 300), ibikoresho by’intebe (PTFE isanzwe ugereranyije na PEEK ishyigikiwe), amafaranga yo kwemeza (NACE, umutekano mu kuzimya umuriro), n’izina ry’uruganda bigizwe n’impinduka nyinshi. Kopi ihendutse ishobora kumera nk’iyi ariko inanirwa vuba.
Q2: Ese ibicuruzwa bya valve y'umupira yo mu Bushinwa bihora biri hasi mu bwiza?
A:Oya. BenshiValve y'umupira w'AbashinwaInganda zikora valves zitsinda API 6D n'ibizamini byo kwirinda inkongi ku giciro kiri hasi cya 40-50% ugereranije n'ibirango byo mu Burengerazuba bw'Isi. Icy'ingenzi ni ukwirinda abacuruzi badafite ibyangombwa no gushimangira inyandiko zanditseho.igipimo cy'umupira w'amaguruGukurikiza amategeko. Ubushinwa bufite urwego rwo hejuru n'urwo hasi - ni wowe uhitamo urwo ari rwo.
Q3: Ni gute nagereranya neza ibiciro bya valve y'umupira?
A:Kora imbonerahamwe yo kugereranya ukoresheje inkingi: igiciro, ibisanzwe bivugwa, ibyemezo byatanzwe, ibikoresho bya buri gice, igihe cyo gutangira, hamwe no kumenya niba videwo/amafoto yo gupima ahari. Igiciro gito cyane gikunze kubura iyo usabye kubahiriza amategeko yose.
Ikibazo cya 4: Ese birakwiye kwishyura amafaranga menshi ku mvange y'umupira idakoresha umuriro?
A:Niba porogaramu yawe irimo ibinyabutabire bishobora gushya cyangwa ubushyuhe bwinshi kandi ikaba iri mu ruganda rutunganya ibinyabutabire, uruganda rukora imiti, cyangwa ububiko bw'ibicanwa, yego - rwose. Iyo hatabayeho igishushanyo mbonera kidakoresha umuriro, valve izava mu gihe cy'inkongi, igatuma umuriro utangira gutwika. Ikiguzi cyiyongereyeho (ubusanzwe kiri hagati ya 15–25%) ni gito cyane ugereranyije n'ingaruka.
Q5: Igiciro gisanzwe cya valve y'umupira kuva ku mucuruzi kugeza ku mucuruzi ni ikihe?
A:Uruganda rugurisha ikiguzi cy'ibikoresho ~2–4×. Umucuruzi yongeraho 30–60% bitewe n'imigabane na serivisi. Kugura mu buryo butaziguye kuriuruganda rukora valve y'umupiracyane cyaneValve y'umupira w'Abashinwauruganda, ruca urwego rwo hagati.
Umwanzuro - Guhitamo igiciro cya Smart Ball Valve Bizigama Amafaranga n'Ubuzima
Kuringanizaigiciro cya valve y'umupirahamwe n'ibisabwa mu bya tekiniki ntabwo ari ugushaka umubare uhendutse cyane - ahubwo ni ugushaka igiciro gito cyane kikijyanye neza n'ibyoigipimo cy'umupira w'amaguruukeneye, uhereye ku nyandiko yemejweuruganda rukora valve y'umupira.
Valve y'umupira w'AbashinwaAbatanga ibicuruzwa batanga agaciro gakomeye iyo babiguze neza: akenshi ushobora kuzigama 40-60% ugereranije n'ibirango byo mu Burengerazuba bw'isi, ariko gusa iyo ushyize mu bikorwa inyandiko n'ibizamini bikwiye. Ntukite ku bagurisha "API 6D ingana" badafite icyemezo.
Koresha intambwe ziri muri iyi nyandiko: sobanura ibipimo ngenderwaho byawe, usabe ibiciro by'ibicuruzwa, ubare ikiguzi cy'ubutaka, kandi wemeze uwakoze ibicuruzwa. Iyo ubikoze, uburenganzira ni ukubigena.igiciro cya valve y'umupirabivuka mu buryo busanzwe - bikingira ingengo y'imari yawe, inzira yawe, n'abaturage bawe.
> *Ukeneye aho wahera? Saba ibiciro by'abantu batatu babanje gusuzumwauruganda rukora valve y'umupiras – nibura umwe ukomoka mu Bushinwa n'undi wo mu gace – hanyuma ugereranye ibyo batanga ukoresheje icyitegererezo kiri hejuru. Iyo myitozo y'iminota 30 izagufasha kuzigama ibihumbi mu myaka itanu iri imbere.*
Igihe cyo kohereza: Gicurasi-12-2026