Mapaipi esimbi emhando ye "ductile iron" ave musimboti mukuru muzvivakwa zvemazuva ano, kunyanya mukuparidzirwa kwemvura uye masisitimu ekugadzirisa mvura yakasviba. Anozivikanwa nekusimba kwawo uye kugara kwenguva refu, mapaipi aya anogadzirwa kuti asvike padanho rakasiyana-siyana, kusanganisira ASTM A536 specification, iyo inotsanangura zvinodiwa zvemapaipi esimbi emhando ye "ductile iron". Pakati pemhando dzakasiyana dziripo, mapaipi esimbi emhando ye "ductile iron" emhando yeK9 anonyanya kuzivikanwa nekuda kwehunhu hwawo hwemakanika hwakavandudzwa, zvichiita kuti akwanise kushandiswa ne "high pressure". Paipi yesimbi yemhando ye "ductile iron" yeDN800, ine dhayamita ye 800 millimeters, isarudzo yakakurumbira yemapurojekiti makuru, ichipa mhinduro yakavimbika yekutakura mvura nezvimwe zvinwiwa.
Kushandiswa kwemapaipi esimbi ane ductile kwakakura, kubva kumasisitimu emvura emakanzuru kusvika kumaindasitiri. Kusagona kwawo ngura uye kugona kutsungirira kumanikidzwa kwakanyanya kunoita kuti akwanise kuiswa pamusoro pevhu uye pasi pevhu. Pamusoro pezvo, mapaipi esimbi ane ductile anowanzo shandiswa mumasisitimu ekudzivirira moto, uko kuvimbika kwakakosha. Kushandiswa kwakasiyana-siyana kwemapaipi aya kunoita kuti ashandiswe munzvimbo dzakasiyana-siyana, kusanganisira nzvimbo dzemaguta, nzvimbo dzekumaruwa, uye kunyange munzvimbo dzakaoma. Sezvo maguta achiramba achikura uye kudiwa kwezvivakwa kuri kuwedzera, kudiwa kwemapaipi akasimba uye anoshanda semapaipi esimbi ane ductile kuri kutonyanya kukosha.
Pakukurukura nezvekupatsanurwa kwemapombi esimbi ane ductile iron, zvakakosha kunzwisisa kukosha kwemapombi akasiyana. Semuenzaniso, K9 grade yakagadzirirwa kubata kumanikidzwa kwakanyanya kana tichienzanisa nemapombi akaderera, zvichiita kuti ive yakakodzera kushandiswa uko njodzi yekumanikidzwa kwakanyanya. Zvinotsanangurwa zvemapombi esimbi ane ductile iron, kusanganisira ukobvu hwemadziro nedhayamita, zvakakosha pakuona mashandiro awo mumamiriro akasiyana-siyana. Hukama huripo pakati pedhayamita nedhayamita nedhayamita ndirowo danho guru rekufunga; sezvo dhayamita ichiwedzera, kumanikidzwa kunofanirwa kuongororwa nokungwarira kuti ive nechokwadi chekuti system yacho yakasimba. Hukama uhwu hunonyanya kukosha kumapombi makuru, akadai seDN800 ductile iron pipe, iyo inofanirwa kugadzirwa kuti ikwanise kubata hydraulic loads yakakura.
Sezvo kudiwa kwemapaipi esimbi akagadzirwa nesimbi pasi rose kuri kuramba kuchikwira, makambani akaita seJindalai Steel Company ari pamberi mukugadzira zvinhu zvitsva uye kugadzira. Nekuzvipira kune mhando uye kugara kwenguva refu, Jindalai Steel Company yakazvisimbisa semutungamiri mukugadzira mapaipi esimbi akagadzirwa nesimbi, ichitevedzera mitemo yepasi rose uye nzira dzakanakisisa. Kutarisa kwekambani pakutsvaga nekuvandudza kunoita kuti zvigadzirwa zvavo zvisangane nezvinodiwa zviri kuchinja pamusika, ukuwo ichigadzirisawo matambudziko ezvakatipoteredza. Sezvo mapurojekiti ezvivakwa pasi rese achinyanya kukoshesa kugara kwenguva refu uye kushanda zvakanaka, basa remapaipi esimbi akagadzirwa nesimbi, kunyanya ayo anosangana neA536 standard uye K9 grade specifications, pasina mubvunzo richaramba rakakosha mukugadzira ramangwana rehurongwa hwekutarisira mvura nekugovera.
Mukupedzisa, mapaipi esimbi ane ductile, kunyanya ayo akaiswa pasi peASTM A536 neK9 grade, zvinhu zvakakosha muzvivakwa zvemazuva ano. Mashandisirwo awo anosanganisira maindasitiri akasiyana-siyana, uye kunzwisisa marongero awo uye hunhu hwekushanda kwakakosha kune mainjiniya nevatariri vemapurojekiti zvakafanana. Sezvo makambani akaita seJindalai Steel Company achiramba achigadzira nekugadzira mapaipi esimbi ane ductile emhando yepamusoro, indasitiri iyi inogona kutarisira kuona kufambira mberi kunowedzera kuvimbika uye kushanda zvakanaka kwezvinhu izvi zvakakosha zvezvivakwa.
Nguva yekutumira: Kubvumbi-24-2025
