Murakaza neza muri CHUANGRONG

Umuyoboro wa HDPE w’umukara wa PE100-RC urwanya ingese urwanya impanuka wo gutanga amazi na gaze

Ibisobanuro bigufi:

1. Ingano:DN20-1600mm yo gutanga amazi.

2. Igitutu:SDR33- SDR7.4, PN4-PN25.

3. Ibikoresho:100% Virgin PE80, PE100, PE100-RC.

4. Ibisanzwe:ISO 4427, EN 12201, ASTM F714, AS/NZS 4130, DIN 8074, GOST 18599, IPS.

5. Gupakira:11.8m, cyangwa 5.8m/pcs kuri metero 50-200 zigororotse, zikoresheje imiyoboro ya DN20-110mm.

6. Gutanga:Iminsi 3-15 bitewe n'ingano yose.

7. Igenzura:Igenzura ry'ibikoresho fatizo. Igenzura ry'ibicuruzwa ryarangiye. Igenzura ry'umuntu wa gatatu risabwe.

8. Ibikoresho:OD20-1600mm, SDR26-SDR7.4, Guhuza Socket, Guhuza Butt, Guhuza Electro, Byakozwe, Byakozwe mu mashini, Guhuza Compression.

 

 


Ibisobanuro birambuye ku gicuruzwa

Ibisobanuro n'Imyigaragambyo

Porogaramu n'Impamyabushobozi

Ibirango by'ibicuruzwa

Amakuru y'ibanze

Intego ya CHUANGRONG ni uguha abakiriya batandukanye igisubizo cyiza cyo guhagarara kimwe ku miyoboro ya pulasitiki. Ishobora gutanga serivisi yateguwe neza kandi yihariye ku mushinga wawe.

Umuyoboro wa HDPE w’umukara wa PE100-RC urwanya ingese urwanya impanuka wo gutanga amazi na gaze

Ibisobanuro by'ibicuruzwa

Imbaraga z'ikigo/uruganda

Izina Umuyoboro w'amazi yo kunywa wa Polyethylene (HDPE) ufite ubucucike bwinshi Ubushobozi bwo gukora Toni 100.000 / umwaka
Ingano DN20-1600mm Urugero Icyitegererezo cy'ubuntu kiraboneka
Igitutu PN4- PN25, SDR33-SDR7.4 Igihe cyo gutanga Iminsi 3-15, bitewe n'ingano
Amahame ISO 4427, ASTM F714, EN 12201, AS/NZS 4130, DIN 8074, IPS Isuzuma/igenzura Laboratwari y'igihugu isanzwe, isuzuma mbere yo gutanga
Ibikoresho fatizo 100% Virgin l PE80, PE100, PE100-RC Impamyabumenyi ISO9001, CE, WRAS, BV, SGS
Ibara Umukara ufite imirongo y'ubururu, Ubururu cyangwa andi mabara Garanti Imyaka 50 ikoreshwa mu buryo busanzwe
Gupakira 5.8m cyangwa 11.8m/uburebure, 50-200m/umuzingo, kuri DN20-110mm.  Ireme Sisitemu ya QA na QC, Reba neza ko buri gikorwa gikurikiranwa
Porogaramu

Amazi yo kunywa, Amazi meza, Imiyoboro y'amazi, Peteroli na Gazi, Ubucukuzi bw'amabuye y'agaciro, Gucukura, Amazi yo mu mazi, Kuhira, Inganda, Ubutabire, Kuzimya inkongi...

Serivisi Ubushakashatsi n'Iterambere, gukora, kugurisha no gushyiraho, serivisi nyuma yo kugurisha

Ibikoresho bihuye: Guhuza ibibuno, Guhuza Socket, Guhuza Electro, Gusukura amazi, Byakozwe, Guhuza imashini, Guhuza ibikoresho byo gukanda, Imashini zo gusudira za pulasitiki n'ibikoresho, nibindi.

Murakaza neza gusura uruganda rwacu cyangwa gukora igenzura ry’uruhande rwa gatatu.

Murakaza neza kutwandikira kugira ngo mubone ibisobanuro birambuye ku bicuruzwa na serivisi nziza.

Ohereza imeri kuri:chuangrong@cdchuangrong.com 

 

Ibisobanuro by'igicuruzwa

UMUYOBORO WA CHUANGRONG PE100-RC DN20-DN1600 HDPE

Ibikoresho by'imiyoboro ya polyethylene byanyuze mu byiciro bine.

Icyiciro cya mbere cyatangiye mu myaka ya 1950, ahanini cyari kigizwe na macromolecules za polyethylene zidafite amashami; icya kabiri cyari ibikoresho bya PE80; icya gatatu cyari ibikoresho bya PE100; icya kane cyatsinze imiterere ya Molecular.

Umuyoboro wa polyethylene PE100-RC ukomeye cyane ntukomeza gusa gukomera neza, kudashira neza no kudashonga kw'umuyoboro wa PE100, ahubwo unagira ibi bikurikira:

1, Ifite ubukana bwinshi:Umuyoboro wa polyethylene PE100-RC ufite ubukana bwinshi iyo ucitse ku kigero kirenze 500%, ufite imbaraga nyinshi, urwanya guhungabana gukomeye no kugoreka. Mu gihe cy'impinduka zitandukanye nko kugwa k'ubutaka n'umutingito, umuyoboro ntuzacika kandi ufite umutekano mwinshi.

2,Ubudahangarwa bukomeye bwo kurwanya stress:Umuyoboro wa polyethylene PE100-RC ukomeye cyane ufite ubukana bukabije, ubuzima busanzwe bwo gukora bugera ku myaka irenga 100. Iyo urukuta rw'inyuma rw'umuyoboro rwashwanyagujwe mu gihe cyo gutwara cyangwa kubaka, ubujyakuzimu bw'urukuta buri munsi ya 20% by'ubugari bw'urukuta, kubera ko igipimo cyo gukura kw'imivuniko yawo ari kimwe cya cumi cy'ibikoresho bya PE100 bifite ubukana bwinshi, bishobora kwemeza neza imikorere isanzwe y'umuyoboro no kongera igihe cyo kuwukora. Mu buryo nk'ubwo, iyo ubujyakuzimu bw'umuyoboro wa PE100 ufite ubukana bwinshi burenze 10% bw'ubugari bw'urukuta, ntushobora kuzuza ibisabwa bisanzwe.

3,Ubudahangarwa bwo gushwaragura:Kubera ko ubukana bw'ubuso bw'umuyoboro wa polyethylene wa PE100 -RC buruta ubw'umuyoboro wa PE100 ufite ubucucike bwinshi, mu gihe cyo gushwara kimwe, uburebure bw'umuyoboro wa PE100 bugabanukaho 1/3 ~ 1/2 ugereranyije n'ubw'umuyoboro wa PE100 ufite ubucucike bwinshi.

4, Ubudahangarwa bukomeye ku mutwaro w'ingingo:Mu gihe cy'ikoreshwa ry'umuyoboro, urukuta rw'inyuma rukandagirwa n'ibintu bikomeye nk'amabuye mu butaka igihe kirekire, bigatuma habaho icyuho imbere, cyitwa point load. Umuyoboro wa polyethylene wo mu bwoko bwa PE100-RC ukomeye cyane ushobora gukumira kwangirika kw'point load, bigatuma imikorere y'umuyoboro irushaho kuba myiza kandi yizewe, kandi ugakoresha neza umuyoboro mu gihe cy'imyaka 50. Mu gihe cy'ikoreshwa ry'umuyoboro wa PE100 ufite ubucucike bwinshi, urukuta rw'inyuma rukandagirwa n'ibikoresho bikomeye nk'amabuye igihe kirekire, ibyo bigatuma urukuta rw'imbere rw'umuyoboro rubyimba kandi rugacika intege.

 

CHUANGRONG ifite itsinda ry’abakozi beza bafite ubunararibonye bwinshi. Ingenzi yayo ni Ubunyangamugayo, Ubunyamwuga n’Ubuhanga. Yagiranye umubano w’ubucuruzi n’ibihugu birenga 80 n’uturere dutandukanye mu nganda. Nka Leta Zunze Ubumwe za Amerika, Shili, Guyana, Ibihugu by’Abarabu, Arabiya Sawudite, Indoneziya, Maleziya, Bangilande, Mongoliya, Uburusiya, Afurika n’ibindi.

Murakaza neza kutwandikira kugira ngo mubone ibisobanuro birambuye ku bicuruzwa na serivisi nziza.

Ohereza imeri kuri: chuangrong@cdchuangrong.com  cyangwa Terefone:+ 86-28-84319855


  • Ibanjirije iyi:
  • Ibikurikira:

  • Umuyoboro wa HDPE urwanya ingese ya PE100-RC wo gutanga amazi na gaze urwanya ingese

     

    PE100

    0.4MPa

    0.5MPa

    0.6MPa

    0.8MPa

    1.0MPa

    1.25MPa

    1.6MPa

    2.0MPa

    2.5MPa

    Ingano yo hanze

    (mm)

    PN4

    PN5

    PN6

    PN8

    PN10

    PN12.5

    PN16

    PN20

    PN25

    SDR41

    SDR33

    SDR26

    SDR21

    SDR17

    SDR13.6

    SDR11

    SDR9

    SDR7.4

    Ubunini bw'urukuta (en)

    20

    -

    -

    -

    -

    -

    -

    2.0

    2.3

    3.0

    25

    -

    -

    -

    -

    -

    2.0

    2.3

    3

    3.5

    32

    -

    -

    -

    -

    2.0

    2.4

    3.0

    3.6

    4.4

    40

    -

    -

    -

    2.0

    2.4

    3.0

    3.7

    4.5

    5.5

    50

    -

    -

    2.0

    2.4

    3.0

    3.7

    4.6

    5.6

    6.9

    63

    -

    -

    2.5

    3.0

    3.8

    4.7

    5.8

    7.1

    8.6

    75

    -

    -

    2.9

    3.6

    4.5

    5.6

    6.8

    8.4

    10.3

    90

    -

    -

    3.5

    4.3

    5.4

    6.7

    8.2

    10.1

    12.3

    110

    -

    -

    4.2

    5.3

    6.6

    8.1

    10.0

    12.3

    15.1

    125

    -

    -

    4.8

    6.0

    7.4

    9.2

    11.4

    14

    17.1

    140

    -

    -

    5.4

    6.7

    8.3

    10.3

    12.7

    15.7

    19.2

    160

    -

    -

    6.2

    7.7

    9.5

    11.8

    14.6

    17.9

    21.9

    180

    -

    -

    6.9

    8.6

    10.7

    13.3

    16.4

    20.1

    24.6

    200

    -

    -

    7.7

    9.6

    11.9

    14.7

    18.2

    22.4

    27.4

    225

    -

    -

    8.6

    10.8

    13.4

    16.6

    20.5

    25.2

    30.8

    250

    -

    -

    9.6

    11.9

    14.8

    18.4

    22.7

    27.9

    34.2

    280

    -

    -

    10.7

    13.4

    16.6

    20.6

    25.4

    31.3

    38.3

    315

    7.7

    9.7

    12.1

    15

    18.7

    23.2

    28.6

    35.2

    43.1

    355

    8.7

    10.9

    13.6

    16.9

    21.1

    26.1

    32.2

    39.7

    48.5

    400

    9.8

    12.3

    15.3

    19.1

    23.7

    29.4

    36.3

    44.7

    54.7

    450

    11

    13.8

    17.2

    21.5

    26.7

    33.1

    40.9

    50.3

    61.5

    500

    12.3

    15.3

    19.1

    23.9

    29.7

    36.8

    45.4

    55.8

    -

    560

    13.7

    17.2

    21.4

    26.7

    33.2

    41.2

    50.8

    62.5

    -

    630

    15.4

    19.3

    24.1

    30

    37.4

    46.3

    57.2

    70.3

    -

    710

    17.4

    21.8

    27.2

    33.9

    42.1

    52.2

    64.5

    79.3

    -

    800

    19.6

    24.5

    30.6

    38.1

    47.4

    58.8

    72.6

    89.3

    -

    900

    22

    27.6

    34.4

    42.9

    53.3

    66.2

    81.7

    -

    -

    1000

    24.5

    30.6

    38.2

    47.7

    59.3

    72.5

    90.2

    -

    -

    1200

    29.4

    36.7

    45.9

    57.2

    67.9

    88.2

    -

    -

    -

    1400

    34.3

    42.9

    53.5

    66.7

    82.4

    102.9

    -

    -

    -

    1600

    39.2

    49

    61.2

    76.2

    94.1

    117.6

    -

    -

    -

     

    Imiterere y'Umuyoboro wa Polythylene wa PE100-RC Ukomeye cyane

     

    Oya.

    Imikorere

    Ishami

    Ibisabwa

    Ibisabwa

    Ibisabwa

    1

    Imbaraga z'amazi

    h

    Nta byangiritse,

    nta gusohoka kw'amazi

    20℃, 12.0MPa, ≥100h

    GB/T 6111

           

    80℃, 5.4MPa, ≥amasaha 165

     
           

    80℃, 5.0MPa, ≥1000h

     

    2

    Kurekura igihe cyo kuruhuka

    e≤5mm

    %

    ≥350b,c

    ubwoko bwa 2d 100mm/umunota

    GB/T 8804.3

     

    Kurekura igihe cyo kuruhuka

    5mm<e≤mm12

        ubwoko bwa 1d 50mm/umunota  
     

    Kurekura igihe cyo kuruhuka

    e >mm 12

        ubwoko bwa 1d 25mm/umunotaubwoko bwa 3d 10mm/umunota  

    3

    Ubudahangarwa bwo gukura buhoro buhoro (ikizamini cy'umuyoboro w'amazi)) en≤5mm

    mm/amasaha 48

    <1

    80℃

    GB/T 19279

    4

    Ubudahangarwa bwo gukura buhoro buhoro (ikizamini cy'umuyoboro w'amazi) en > 5mm

    h

    igihe cyo gutsindwa ≥8760

    80℃, 0.92MPa

    (igitutu cyo gupima)

    GB/T 18476

    5

    Ikizamini cyuzuye cyo gukata icyuma (FNCT)

    h

    igihe cyo gutsindwa ≥8760

    80℃, 4.0MPa, 2% umuti wa eteri wa nonylphenol polyoxyethylene

    DIN/PAS 1075

    6

    Ikizamini cyo gupima uburemere bw'amanota

    h

    igihe cyo gutsindwa ≥8760

    0℃, 4MPa, 2% umuti wa eteri ya nonylphenol polyoxyethylene

    DIN/PAS 1075

    7

    Ubudahangarwa bwo gukura vuba (RCP)

    Mpa

    Pcs≥MOP/2.4-0.072

    -

    GB/T 19280

    8

    Gusubirana Ubushyuhe

    -

    Pcs≥MOP/2.4-0.072

    0℃

    GB/T 15558.1-2015

    9

    Ubushyuhe buhamye

    umunota

    >20

    200℃

    GB/T 19466.6

    10

    Ubushyuhe buhamye (MFR)

    g/iminota 10

    impinduka mbere na nyuma yo gutunganya

    20%

    5kg, 190℃

    GB/T 3682

    11

    Gusubira inyuma mu gihe kirekire (ubugari bw'urukuta ≤16mm)

    %

    ≤3, nta cyangiritse ku buso

    110℃, 200mm, isaha 1

    GB/T 6671

    a. Harebwa gusa ikibazo cyo kunanirwa kw'imitsi. Iyo ikibazo cyo kunanirwa kw'imitsi kibaye mbere y'amasaha 165, stress nke n'igihe gito cyo kunanirwa bigenwa hakurikijwe ibipimo ngenderwaho kugira ngo byongere bipimwe.

    b. Iyo ibyangiritse bigaragaye hanze y'intera isanzwe, ikizamini gifatwa nk'icyatsinzwe iyo agaciro k'ikizamini kujuje ibisabwa.

    c. Iyo igipimo gikenewe kigeze ku gaciro, ikizamini gishobora guhagarikwa hatabayeho gupima kugeza igihe icyitegererezo cyangiritse.

    d. Niba bishoboka, umuyoboro ufite ubugari bw'urukuta butarenze mm 25 ushobora no gukoreshwa mu bwoko bwa 2, ubwoko bwa 2 hakoreshejwe uburyo bwo gutunganya cyangwa gushushanya.

    e. Ku bijyanye n'agaciro k'umuvuduko gahuye n'izindi serivise za SDR, reba GB/T 18476.

    f. Ikizamini cya RCP kigomba gukorwa gusa iyo umuyoboro wakozwe n'uruganda rukora imiyoboro urenze ubunini bw'urukuta rw'umuyoboro wakoreshejwe mu ikizamini cya RCP cyatanzwe n'uruganda rukora ibintu bivanze. Iyo ukoresheje ubushyuhe buri munsi ya 0 ° C, ibizamini bya RCP birakenewe kuri ubu bushyuhe kugira ngo hamenyekane igitutu gikomeye ku bushyuhe buke bwo gukora. Mu gihe cyo gupima hakurikijwe GB/T 19280, niba ikizamini cya S4 kitujuje ibisabwa, ikizamini kigomba kongera gupimwa hakurikijwe ikizamini cyuzuye, kandi ibisubizo by'ikizamini cyuzuye bigomba gukoreshwa nk'ishingiro ry'urubanza rwa nyuma.

    Murakaza neza kutwandikira kugira ngo mubone ibisobanuro birambuye ku bicuruzwa na serivisi nziza.

    Ohereza imeri kuri: chuangrong@cdchuangrong.com  cyangwa Terefone:+ 86-28-84319855

    Imiyoboro ya HDPE imaze igihe kinini ibaho kuva mu myaka ya za 50. Ubunararibonye bwerekana ko imiyoboro ya HDPE ari igisubizo ku bibazo byinshi by’imiyoboro, abakiriya n’abajyanama b’abahanga mu by’ubwubatsi, nk’ibikoresho byiza by’imiyoboro mu gukoresha imbaraga nyinshi no kudakoresha ingufu nyinshi, kuva ku gukwirakwiza amazi na gaze kugeza ku ngufu z’uburemere, imiyoboro y’amazi mabi n’imiyoboro y’amazi yo hejuru ku mishinga mishya n’iy’ubusa. Imiyoboro ya polyethylene ya Chuangrong ishingiye kuri resine ya polytholefin thermoplastic, nayo ikaba ari ibikoresho bidafite uburozi, bityo ikaba ikwiriye gukoreshwa mu buryo butandukanye.

    Bikwiriye:

    Amazi Ibikoresho. ChuangrongImiyoboro ya PE ikorwa mu bikoresho byujuje ibisabwa n'uburozi bwa OMS kandi ishobora gukoreshwa mu gutwara amazi yo kunywa.

    -Imiyoboro n'ibikoresho bifite igipimo cy'umuvuduko wa SDR 7.4 kugeza kuri SDR 41 ku miyoboro y'amazi ndetse n'imiyoboro ikwirakwiza amazi n'imiyoboro ya serivisi.

    -Kuramo imiyoboro n'ibikoresho byo gushyiramo imiyoboro y'amazi yo mu isoko.

    -Imiyoboro izamuka yo kuvoma amariba.

    Mu buryo bunyuranye n'imiyoboro ikoze mu byuma cyangwa ibyuma bito, imiyoboro ya HDPE ni yoroshye kandi irwanya ingese. Nta butaka busharira cyangwa amazi "ashyushye" bizagira ingaruka ku bikoresho. Byongeye kandi, ibikoresho bya ngese, akenshi bibangamira imikorere ya sisitemu y'imiyoboro, birindwa. Ugereranyije n'imiyoboro ya PVC, imiyoboro ya HDPE yoroshye kandi itanga ubudahangarwa bwinshi nubwo haba hari ubushyuhe bwa zeru. Imiyoboro ishobora kumenyerana byoroshye n'imiterere y'imiyoboro idakoresheje ibindi bikoresho. Ku rundi ruhande, ibyago byo kuvunika bitewe n'imiterere ikabije yo kuyikoresha aho yubakwa biragabanuka. Imiyoboro ya HDPE (imiyoboro ya spigot n'imiyoboro y'amazi) itanga uburyo butandukanye bwo guhuza imiyoboro. Bityo, gushyiraho insinga cyangwa ibyuma byo gupfunyika si ngombwa kandi sisitemu y'imiyoboro idapfa amazi kandi imara igihe kirekire irabyemejwe.

    Inzoga nyinshi cyane amazi ireme.Kugira ngo amazi yo kunywa akoreshwe neza bigenzurwa binyuze mu isuzuma ryigenga. Uburyohe cyangwa impumuro y'amazi yo kunywa ntibigira ingaruka bitewe n'uko imiyoboro ya HDPE ikora. Ubuso bworoshye n'ubudahangarwa bwinshi bwo kwangirika bitanga icyizere cyo kugabanuka guke. Polyethylene irwanya ingese, bityo, amazi yo kunywa ntashobora kwanduzwa n'ibintu bivamo ingese nk'umuringa cyangwa ibyuma biremereye nka cadmium cyangwa lisansi, ibi bibaho kenshi ku miyoboro ya kera y'icyuma.

     

    IbidukikijeIbikoresho byiza kugira ngo ibidukikije bibe bisukuye. Itsinda HDPE imiyoboro na gushyiramo ni gusa ikozwe mu bikoresho birengera ibidukikije. Urugero, ingufu zisabwa mu gukora imiyoboro ya HDPE ni nkeya bitewe n'uko imiyoboro ikorwa muri polyethylene. Gukoresha sisitemu za HDPE zitanga igisubizo cyiza ku bidukikije. Sisitemu yo gutanga amazi idasohoka 100% ishobora gushyirwaho hakoreshejwe uburyo bworoshye bwo gusudira. Bityo, gushyira amazi yo kunywa mu kaga hakoreshejwe ibintu byangiza biragabanuka. Byongeye kandi, gutakaza amazi bitewe n'imiyoboro isohoka birarindwa. Nta bundi buryo butanga izi nyungu.

    Kuri bikabije imiterere. Imiyoboro ya HDPE yemewe gushyirwa mu butaka bwose. Polyethylene ni uburyo bworoshye bwo gukoresha uburyo butandukanye bwo guhuza imiyoboro, bugakingira inzira yo gutanga amazi idasohoka. Kubera uburemere bworoheje n'uburyo bworoshye bwo guhuza imiyoboro, imiyoboro ya HOPE ikwiriye cyane mu bihe bibi - kuyishyira mu butaka bugoye.

    Imiyoboro y'amazi.ChuangrongImiyoboro irimo gukoreshwa mu gusohora amazi munsi y’ubutaka ku nyubako, imiyoboro y’imyanda ikoreshwa mu gusohora amazi yangiza ndetse no mu gukora imiyoboro minini ikoreshwa mu gutunganya imyanda. Ikwiriye cyane mu gusohora imyanda mu nganda kandi ikoreshwa cyane nk’imiyoboro y’imyanda munsi y’ubutaka n’imyanda.

    Inganda.Ibintu nk'ibidapfa kwangirika, koroshye gushyiraho, uburemere bworoheje, no koroherwa bituma imiyoboro ya chuangrong iba myiza cyane ku bijyanye n'amazi agoye mu nganda. Ni myiza cyane ku bijyanye n'imiti ihumanya.

    Gazi na Umuyoboro w'amavuta Sisitemu. PEImiyoboro yo gushyiramo imiyoboro y'icyuma cya karuboni kugira ngo itware peteroli na gaze ku muvuduko mwinshi irahari. Imiyoboro yakozwe by'umwihariko ifite ubuso bworoshye kandi yoroshye kuyishyiraho. Bityo imiyoboro ya gaze ishobora gushyirwaho ku giciro gito. Mu gucukura ikoreshwa nk'ibice by'imyobo kuko bihendutse. Bitewe n'imiterere myiza ya HDPE, igaragaza imbaraga nyinshi kandi irwanya cyane ubutaka bukaze. Iyo miyoboro ya HDPE ihujwe no koroshya kuyifata no kuyishyiraho, ni nziza cyane mu gutwara ibikoresho n'izindi gaze harimo na gaze ya bio.

    20191127203627_96148
    20191114204801_33593

    CHUANGRONG ifite uburyo bwuzuye bwo gupima hamwe n'ubwoko bwose bw'ibikoresho bigezweho byo gupima kugira ngo igenzure ubuziranenge mu bikorwa byose kuva ku bikoresho fatizo kugeza ku bicuruzwa byarangiye. Ibi bicuruzwa bihuye n'ibipimo ngenderwaho bya ISO4427/4437, ASTMD3035, EN12201/1555, DIN8074, AS/NIS4130, kandi byemewe na ISO9001-2015, CE, BV, SGS, WRAS.

    IKORESHA UMUYOBORO WA CE-PE
    ICYEMEREZO CYA ISO

    Ohereza ubutumwa bwawe kuri twe:

    Andika ubutumwa bwawe hano hanyuma ubwoherereze

    Ohereza ubutumwa bwawe kuri twe:

    Andika ubutumwa bwawe hano hanyuma ubwoherereze