Sechinhu chakakosha muinjiniya yepombi yemazuva ano, mapaipi epurasitiki-akavharwa nesimbi anoita basa rakakosha mukuvaka zvivakwa zvemumba nekunze nekuda kwekusimba kwadzo kwekuora uye kusimba kwemagetsi. Kunzwisisa kuumbwa kwavo kwekutanga kwakakosha pakunzwisisa hunyanzvi hwekuita uye kukosha kwemusika kwechigadzirwa ichi.
Kubva mukuona kwepakati, pombi dzepurasitiki{{0} dzakavharwa nesimbi dzinowanzogadzirwa kubva ku-kabhoni structural simbi yemhando yepamusoro kana kuti yakaderera-alloy yakakwirira{3}}simbi yakasimba. Yakagadzirwa kuburikidza nekutonhora kana kupisa kukungurutswa, aya masimbi haangove ane yakanakisa compression simba asiwo anoenderana nekuisa zvinodiwa mumamiriro akasiyana e geological. Magiredhi esimbi akaita seQ235B neQ345B ndiwo anonyanya kushandiswa papasi pepurasitiki-pombi dzesimbi dzakavharwa nekuda kwekudhura kwazvo-kushanda zvakanaka. Aya carbon steel substrates anofanorapwa{11}}kubvisa surface oxide layer, zvichigadzira chitarisiko chakanaka cheplastic coating rinotevera.
Kana tichitaura nezvemabhanditi anoshanda, mapaipi epurasitiki-akavharidzirwa esimbi anonyanyoiswa mukati nekunze ne thermoplastics kana thermosetting resins. Iko mukati kunowanzogadzirwa nechikafu-grade polyethylene (PE) kana epoxy resin (EP). Yakakwira-density polyethylene inopa kugadzikana kwekemikari yakanakisa uye inoshingirira kudzivirira kune acidic uye alkaline corrosive media. Epoxy poda coating, nekuda kweiyo dense molecular chimiro, inoratidza yakanakisa hutsanana zvimiro kana uchitakura mvura yekunwa. Iyo yekunze inodzivirira layer inogadzirwa neUV-resistant yakagadziridzwa polyethylene, kuona kuti pombi haigoni kuchembera nekutsemuka panguva-refu yekushandiswa kunze.
Mamiriro ekushandisa akasarudzika akakurudzira kuvandudzwa kwezvinhu zvinosanganiswa. Kuzadzisa zvinodiwa zvekufambisa-tembiricha yemhando yepamusoro, zvimwe zvigadzirwa zvinoshandisa yakakwirira-temperature modified polypropylene (PP-}R) sejira remukati. Pakuramba kupfeka mumigodhi, mabhanhire akaumbwa ane zvidimbu zveceramic zvinogona kuwedzera hupenyu hwesevhisi yepombi ne3-5 nguva. Aya magadzirirwo emidziyo anochengetedza mabhenefiti ekutakura-kumanikidza emapombi esimbi uku achipa hunyanzvi hwekuita kune chaiwo mamiriro ekushanda.
Kubva pakuona kwekutengeserana nedzimwe nyika, kusarudzwa kwepurasitiki-pombi dzesimbi dzakavharwa zvinokanganisa kukwikwidza kwechigadzirwa kunze kwenyika. Magadzirirwo anofambirana nezviyero zvepasi rose seASTM neISO, pamwe chete neSGS-zviziviso zvekuongorora zvinhu zvakasimbiswa, zvave kiyi yekuwana mukana wekuwana-misika yepamusoro muEurope nekuUnited States. Kune misika ichiri kusimukira yakaita seSoutheast Asia neMiddle East, musanganiswa wezvinhu izvo zvinodhura zvakanakira nekuita kwekutanga zvinonyanya kukwezva vatengi.
Kunzwisisa zvinhu zvakakosha zvepurasitiki-pombi yesimbi yakavharwa haingobatsiri kudzamisa kunzwisisa kwezvigadzirwa zvehunyanzvi asi zvinopa zvikwata zvevatengesi vekunze nzira dzekusimudzira zvigadzirwa, zvichitora zvakanakira mumakwikwi emisika yepasirese.
